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Aker Systems was founded in 2017 by a team of experienced technology professionals who recognised an opportunity to provide highly secure enterprise data platforms to large organisations.  We build and operate ground-breaking, ultra-secure, high performance, cloud-based data infrastructure for the enterprise. Our proprietary technology solutions drive performance and reduce costs while helping our clients to improve the management and sharing of data across their organisations. In 2024, Aker Systems won the Breakthrough Culture Awards highlighting growth companies putting culture first. In 2020 Aker Systems was recognised as a ‘One to Watch’ on the Sunday Times Tech Track.  The Company was also recognised at the Thames Valley Tech Awards 2020; winning the Thames Valley Tech Company of the year, the Emerging Tech Company and High Growth Tech Business categories.  We encourage people of all different backgrounds and identities to apply.  We are committed to maintaining an inclusive, and supportive place for you to do your very best work. DUTIES & RESPONSIBILITIES A UK Government Security Check (SC) clearance is required for this role. If you don’t hold SC clearance, we will support you to apply assuming you have lived and worked in the UK for a minimum of 5 years. As a Software Engineer, you will help lead the development of backend services for a government client leveraging the latest commercial and open-source technologies. This involves designing, developing, documenting and deploying backend services with a focus on high availability, low latency and scalability.  * Design, develop, document and deploy new or enhanced features to our backend services that meet functional / non-functional business requirements  * Actively participate in the team’s elaboration and estimation of user stories  * Build frequent, small releases to maintain the team’s momentum  * Collaborate closely with other engineers in our cross-functional feature teams; ensuring that others can cover for you, and that you can cover for them  * Build, optimise and operate our Continuous Deployment pipelines  * Maintain operational responsibility for the services that your team owns  CORE COMPETENCIES The successful candidate will have a Bachelor's degree or greater in Computer Science or a related field. An equivalent of at least 5 years of working experience in a developer capacity is also acceptable for this position.  You will have demonstrated the following competencies to the proficiency level appropriate to the seniority of the role; * JAVA programming experience as the core language, including Spring Boot. * Fluent in writing JAVA coding. * Experience with Kafka or a similar platform. * Experience with Scala and Spark. * Integrating with backing services, such as PostgreSQL, Redis or S3 * Good engineering practices including continuous delivery, clean code, documentation, defensive programming, automated testing and code reviews * Working in Agile development and/or DevOps teams * Using GitHub/GitLab for source control * Test Driven Development with appropriate tools and frameworks * Experience in Big Data technologies * Experience in Public Cloud services, such as AWS Aker Systems Attributes At Aker we work as a team; we are collaborative, hardworking, open, and delivery obsessed. There is no blame culture here: try things, and take responsibility for the outcomes. You are always part of the wider Aker. We help our colleagues and take pride in successfully achieving difficult tasks. We run towards problems and help to solve them. Communicate always, do so accurately and in a timely fashion. In return, we offer a competitive salary, 25 days holiday plus bank holidays, company paid medical insurance and life assurance, pension scheme, annual training allowance, wellbeing allowance, virtual GP, Employee Assistance plan and more. Equal Opportunities Aker Systems fosters a diverse environment that encourages openness in its communications and is committed to providing equal employment opportunity for all people regardless of race, religion, gender or sexual orientation, age, marital status, national origin, citizenship status, disability, veteran status or other personal characteristics. We embrace differences of opinion and diversity because they help challenge us and find new groundbreaking technical solutions.

About the role We are looking for an experienced Software Engineer with deep expertise in building scalable backend systems, distributed microservices, and modern cloud-based infrastructure as well as a demonstrated interest in or experience with GenAI and LLM technologies.  This role is ideal for someone who thrives on solving complex architectural challenges and has a strong track record of building and deploying reliable, high-performance software systems at scale. You will be instrumental in designing core systems, APIs, and data flows, while contributing to the evolution of our infrastructure. You’ll collaborate across cross-functional teams to deliver robust solutions, audiovisual data processing, and modern AI/LLM systems and workflows. Key Responsibilities and Qualifications Design, develop, and maintain scalable backend services using one or more of: TypeScript, Node.js, PHP, and Python Design and build powerful REST APIs. Design and and take full cycle ownership of distributed microservices Familiarity with Generative AI technologies and Large Language Models Design, optimize, and manage relational and NoSQL databases including MySQL, DynamoDB, Redis, and Apache Druid Define and implement infrastructure as code using Terraform on AWS Build and maintain robust CI/CD pipelines 5+ years of professional software development experience Bachelor’s degree in Computer Science, Artificial Intelligence,  Machine Learning or similar field. Proven ability to work in fast-paced, cross-functional environments Nice to have Solid foundation in machine learning, AI, and statistical methods Hands-on experience deploying and managing both cloud-native and self-hosted services Experience with VOIP telephony stacks including Asterisk and Kamailio Our ways of working Each team has clear responsibilities and goals and the freedom to collaborate on the optimal design for the products and solutions we build. We want to hear your opinion! We have an agile approach to processes and teamwork and we constantly evaluate and adapt. Our Product and UX teams are closely integrated with development. We use modern frameworks and the best tools available. We work flexibly and have fun at work. Delivering customer value is as important as the wellbeing of our friends and colleagues. We value personal growth and encourage learning, and embrace every opportunity to share knowledge in the team. Where you’ll be and how you’ll work We have three offices: London, Uppsala and Paris. This role is based in the Uppsala office. We work business hours, but we understand that life sometimes gets in the way. Kaisa Culture What makes Kaisa stand out? Our values, guiding us every day: Innovate with Agility - We move fast, think creatively, and adapt seamlessly. Win Together - Success is a team effort, and we celebrate it as one. Own It - Accountability drives progress, and we take pride in our work. Champion Sustainability and Diversity - We foster inclusivity and make responsible choices. Spread the Vibe - A positive atmosphere fuels great ideas and connections.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE You’ll own the core web stack at Sana - from our TypeScript/React frontend to the Node services, tooling, and monorepo infrastructure that power it. This is a role for engineers who love unblocking others: you’ll design and maintain the build systems, frameworks, and developer workflows that let teams ship fast, safely, and with confidence. You’ll work on everything from core web architecture and performance to CI, testing, and local development, ensuring our web platform is modern, secure, and a joy to build on. IN THIS ROLE, YOU WILL * Own and evolve Sana’s TypeScript/React/Node foundations, including frameworks, services, and conventions * Maintain and improve our monorepo tooling: build tools, dependency management, scripts, and shared services * Design and refine local development, testing, and build workflows so they’re fast, reliable, and easy to use * Optimize web performance, reliability, and security across our frontend and Node services * Shape and implement our testing strategy (unit, integration, end-to-end, visual) and related tooling * Maintain and improve CI/CD pipelines, including caching, checks, and deployment workflows * Define and champion best practices for web development, debugging, and observability across teams * Collaborate closely with product engineers to identify friction points and remove them through better tooling and architecture WHAT SUCCESS LOOKS LIKE * Developers move quickly and confidently: local dev, testing, and builds feel fast, predictable, and low-friction * Our monorepo, build system, and dependencies are well-structured, well-documented, and easy to maintain * Core web flows are performant, secure, and observable—from frontend interactions to Node services * CI/CD pipelines and test infrastructure are stable, discoverable, and trusted by engineers * Framework and dependency upgrades are routine, low-risk, and keep us at the forefront of the TypeScript/React ecosystem * You’re seen as a go-to engineer for web architecture, performance, and developer experience - raising the bar for how we build, ship, and maintain software at Sana. OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE Ship customer-facing value quickly in small teams - owning everything from problem definition through UX, API, and instrumentation. You’ll work end-to-end to deliver features that delight users and move the needle for Sana and our customers. IN THIS ROLE, YOU WILL * Own features from design to deploy - frontend (React/TypeScript), backend (Node/TypeScript) and database (Postgres) * Integrate with agent and retrieval APIs to deliver seamless product experiences * Instrument products, run A/B tests, and iterate quickly with design and PM * Make pragmatic trade-offs and thrive in ambiguous 0→1 product spaces * Collaborate closely with stakeholders, users and teammates to define and solve the right problems WHAT SUCCESS LOOKS LIKE * Features ship fast, delight users, and drive measurable impact * End-to-end ownership is the norm - problems are solved, not handed off * Product instrumentation and A/B tests inform every iteration * You are a force multiplier for your squad, making everyone around you better * Ambiguity is an opportunity, not a blocker OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE You will play a pivotal role in bridging the gap between our product development and client-facing teams in either of our two core products: Sana Agents and Sana Learn. You will partner with some of the world’s most forward-thinking organizations to design, validate, and implement solutions that transform how their people work and learn. On the Sana Agents side, you’ll help customers operationalize agentic AI for work by connecting systems, designing workflows, and demonstrating how intelligent agents can search, reason, and act across a company’s knowledge and tools. On the Sana Learn side, you’ll work with L&D, HR, and business leaders to design modern learning ecosystems: from AI-powered authoring to enterprise-grade learning programs, analytics, and integrations. As Sana Agents’ and Sana Learn’s footprint expands through an increasing client base and user adoption, your role will likely evolve to include coaching and onboarding additional solution engineers, scaling the solutions you’ve designed and implemented, and creating and iterating on the playbooks required to make Sana solutions succeed at scale. WHAT YOU’LL DO * Become a product expert and provide dedicated technical support during pre-sales and implementation phases, ensuring that client queries are addressed promptly, accurately, and completely. * Engage directly with technical stakeholders, especially large enterprises, to build trust and credibility by demonstrating deep technical knowledge around Sana products, the ecosystem with which we integrate, generative AI, and enterprise security * Collaborate closely with product managers and engineers to stay updated on the latest product developments and ensure seamless communication between teams. * Address complex technical issues that arise during sales and deployment, ensuring that solutions are implemented efficiently and effectively. * Identify and implement process improvements to enhance the efficiency of the sales and deployment processes. WHAT WILL HELP YOU THRIVE * A strong technical background with experience in software engineering, systems engineering, solutions engineering, or a related field. * Proven experience in a client-facing technical role, preferably within the tech industry. * Excellent problem-solving skills with the ability to address complex technical issues quickly and effectively. * Strong verbal and written communication skills and can explain technical concepts to both technical and non-technical stakeholders. * Working collaboratively with cross-functional teams, including product managers, engineers, and sales teams. * A self-starter mindset, meaning you can proactively identify issues and opportunities and tackle them without being told to do so. * Ability to turn ambiguity into scalable processes, documentation, and systems OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE You’ll own the reliability, security, and scalability of Sana’s platform while leveling up developer velocity. This is the place for engineers who thrive on moving between cloud infrastructure, deployment, and tooling to unblock everyone else. You’ll work on everything from multi-tenant scale-out to developer experience, ensuring our platform is robust, secure, and a joy to build on. IN THIS ROLE, YOU WILL * Drive reliability, security, and scalability across the platform * Architect and implement multi-tenant scale-out (10–100x) and observability solutions * Lead incident response, performance profiling, and cost control initiatives * Build and maintain CI/CD pipelines, test infrastructure, and environment provisioning * Work with engineers across the stack to remove friction and accelerate delivery WHAT SUCCESS LOOKS LIKE * The platform scales seamlessly as usage grows 10-100x, with robust observability and incident response * Security and compliance are built-in, not bolted on * Developer velocity is tangibly higher—teams ship faster, with fewer blockers * CI/CD, test infra, and development environments are reliable, discoverable, and loved by engineers * Cost controls and performance budgets are visible and actionable * You are a go-to partner for infra, deployment, and tooling challenges: unblocking others and raising the bar for engineering excellence. OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE You’ll be the quality champion for Sana’s AI agent platform, ensuring our LLM-powered products are robust, reliable, and a delight to use. You’ll design and implement test strategies that keep pace with rapid iteration, automate critical workflows, and drive a culture of quality across engineering. This is a hands-on role for someone who thrives on constructing scalable ways of breaking things, uncovering edge cases unique to agentic and LLM-based systems, and building the safeguards that prevent issues from reaching production. You’ll help us deliver agent workflows that are safe, trustworthy, and enterprise-ready, for the AI landscape of today and tomorrow. IN THIS ROLE, YOU WILL * Design and implement test plans for agent infrastructure, LLM-based APIs, and end-to-end user journeys * Build and maintain automated test suites for backend, frontend, and integration layers, including prompt and response validation for generative models * Develop tools and frameworks to accelerate testing and catch regressions early, especially in agent reasoning, tool use, and context handling * Collaborate closely with engineers to embed quality into every stage of development, with a focus on the unique challenges of AI/LLM systems (e.g., non-determinism, hallucinations, safety) * Lead root cause analysis and drive resolution for critical issues and incidents, including those arising from model updates or agent behaviors * Advocate for best practices in code quality, observability, and CI/CD pipelines—ensuring quality signals are actionable and visible WHAT SUCCESS LOOKS LIKE * Critical bugs, regressions, and model failures are caught before they reach users—even as we scale and ship rapidly * Automated test coverage is high, reliable, and easy to maintain, including for LLM outputs and agent workflows * Release cycles are fast and safe. Confidence in shipping is high, even with evolving models and agent capabilities * Quality metrics (including model quality, agent reliability, and user experience) and dashboards provide clear, actionable signals to the team * You are a go-to partner for engineers, raising the bar for quality and reliability in AI-driven systems OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE Join Sana as our founding Integration Engineer and shape the future of how enterprise customers experience our platform. Integrations — connecting Sana Learn with HRIS, content libraries, and other critical enterprise systems — are not just add-ons, but core product features that drive customer value and trust. In this high-impact role, you’ll take full ownership of building, maintaining, and scaling integrations that blend seamlessly into our core product, setting the gold standard for reliability and user experience. You’ll be the architect behind our integration strategy, ensuring every connection is robust, secure, and future-proof. Your work will directly influence Sana’s ability to deliver enterprise integrations. You’ll own and evolve our key integration repositories, and your contributions will be foundational to Sana’s long-term success as we scale. IN THIS ROLE, YOU WILL * Lead the design, development, and maintenance of scalable integrations between Sana Learn and leading HR systems, content providers, and other enterprise platforms * Take full ownership of our integration codebases, driving best practices, code quality, and strategic direction for all integrations * Build integrations that are indistinguishable from core product features — seamless, reliable, and deeply aligned with Sana’s product standards * Work with modern protocols and standards, ensuring secure and flexible user provisioning and custom attribute mapping across various platforms * Collaborate closely with product, customer, and other engineering teams to deeply understand integration requirements and deliver solutions that exceed enterprise expectations * Troubleshoot, optimize, and future-proof integrations, ensuring they are ready to scale with Sana’s rapid growth * Write clean, maintainable TypeScript code, working extensively with JSON and APIs, and contribute to clear, comprehensive documentation * Champion in-house integration expertise, setting the foundation for Sana’s long-term reliability YOUR BACKGROUND LOOKS SOMETHING LIKE * 3+ years of experience in software engineering, with a focus on integrations, APIs, or backend development * Expert-level proficiency in TypeScript and JSON-based APIs * Proven track record in building and maintaining integrations with enterprise systems * Deep understanding of user provisioning and authentication protocols, custom attribute mapping, and security best practices for enterprise integrations * Experience owning and evolving codebases in a collaborative GitHub environment * Ability to debug complex API payloads and troubleshoot integration issues across multiple systems * Passion for writing clean, maintainable, and scalable code for mission-critical integrations * Excellent communication skills and a collaborative, entrepreneurial mindset NICE TO HAVE * Experience with content provisioning and caching strategies * Familiarity with SQL and tracking data lineage for user attributes across APIs and manual updates OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform We encourage you to apply even if you do not believe you meet every single qualification. Not all strong candidates will meet every single qualification as listed. WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA  Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE In this role, you’ll create engaging user experiences while implementing robust frontend application logic. You'll work closely with our engineering and design teams to build and maintain our user interfaces, focusing on both visual implementation and technical architecture. IN THIS ROLE, YOU WILL: * Build engaging user interfaces with a focus on both functionality and experience * Work with engineering teams to implement frontend application logic * Collaborate with Product Design to deliver high-quality implementations * Develop and maintain core frontend infrastructure YOUR BACKGROUND LOOKS SOMETHING LIKE: * Proficiency in technologies like TypeScript, React, styled-components, framer motion, and custom CSS implementations * Experience building complex UI components and systems * Familiarity with Radix UI and similar component libraries * Strong understanding of web fundamentals, from HTTP to CSS * Focus on writing maintainable, scalable frontend code OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE You'll build and evolve the core services that power agents and product features, with a focus on enterprise-scale workloads, performance optimization, and long-term architectural sustainability. You drive architecture and systems design to ensure our platform can support high volumes of data, entities, and demanding enterprise clients. IN THIS ROLE, YOU WILL * Design and decompose services and APIs for scale and clarity * Build eventing and queue systems for reliable, high-throughput data flows * Lead schema evolution, migrations, query/index optimization and caching strategies * Define and enforce consistency models and multi-region readiness * Optimize for performance budgets and privacy/tenant isolation * Work hands-on with TypeScript/Node, Postgres, and distributed systems primitives. WHAT SUCCESS LOOKS LIKE * Core services are reliable, scalable, and easy to evolve * Risks are identified and solved before issues become critical * APIs are clear, well-documented, and power seamless product experiences * Data boundaries are robust - privacy and tenant isolation are never compromised * Performance budgets are met, even under heavy load * You are a trusted partner for distributed systems design and implementation OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA  Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE  As an Infrastructure Engineer, you will support our engineering teams by building and maintaining the technical foundation that enables our products to scale. You'll work on cloud infrastructure, deployment systems, and developer tooling, serving as a technical partner to other engineering teams while focusing on reliability and performance. IN THIS ROLE, YOU WILL * Be the backbone of our ambitious goals, ensuring our infrastructure is robust and scalable. * Support feature development teams with infrastructure decisions and deployments. * Act as Site Reliability Engineer (SRE) and continuously enhance our Developer Experience (DX). * Design and implement scalable cloud infrastructure solutions. YOUR BACKGROUND LOOKS SOMETHING LIKE * Proficiency in both backend engineering and cloud-based deployments. * Experience with highly available, scalable, and extensible backend systems. * Proficiency in GCP, and Kubernetes. * Track record of supporting development teams with infrastructure solutions * Understanding of site reliability engineering principles. OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

ABOUT SANA Sana is an AI lab building superintelligence for work. We believe organizations can accomplish their missions faster when teams can effortlessly access knowledge, automate repetitive work, and learn anything with the help of agentic AI. As part of Workday, we are committed to building AI that augments people - not replaces them. We bring this mission to life through two products. Sana Agents provide a seamless way to access all your company’s apps, knowledge, and data, enabling AI agents to do real work so teams can process and act on information at unprecedented scale. Sana Learn is an AI-powered learning hub that combines the simplicity of a modern learning platform with intelligent features like an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable. We’re a talent-dense, product-obsessed team of engineers and designers from companies like Google, Spotify, Apple, and Databricks, united by deep technical excellence and rapid iteration. Our tools already help over a million people learn and work better across hundreds of leading enterprises - and we’re just getting started. ABOUT THE ROLE Join our engineering team to help build the future of knowledge sharing and AI-powered learning. We're looking for talented engineers who can contribute across our technology stack. Whether you're a generalist or have deeper expertise in specific areas, we value strong engineering fundamentals and the ability to learn and grow with our team. OUR TECH STACK We build on a simple modern stack optimized for both humans and AI. * Backend: TypeScript, Kotlin, Node.js * Frontend: TypeScript, React, Tailwind * Databases: Postgres, Redis * Cloud infra: GCP/Kubernetes/Terraform WHAT WE OFFER * Help shape AI's future alongside brilliant minds from Google, Apple, Spotify, Notion, Slack, Databricks, and BCG. * Competitive salary complemented with a competitive RSU program. * Swift professional growth in an evolving environment, supported by a culture of continuous feedback and mentorship from senior leaders. * Work with talented teammates across 5+ countries, and global customers, from our beautiful office in Stockholm.

WHY POLAR? It's never been easier to build, ship and scale software. But it's never been harder to monetize it. Modern startups look fundamentally different than prior generations: * Smaller teams * Exponential revenue growth relative to headcount * Higher variability in costs (LLMs) requiring more frequent pricing iterations * Laser focused on product development and distribution * Delegating and automating everything that is boilerplate – be it in their codebase or business operations. Exceptional billing primitives, APIs and SDKs are essential, but delightful integration is not enough. Startups need a billing platform designed for their speed of iteration. Combining billing and analytics in one platform to offer customer- and feature unit economics in real-time. Offering built-in pricing and cost insights, simulations and optimizations while simultaneously handling international compliance, tax management, fraud prevention and more. That's Polar. We're building the next standard for applied AI startups. Join our small, talented and engineering-led team across Europe as we build the infrastructure powering the next generation of software companies. We focus on shipping at high velocity to serve startup founders scale their businesses. Everything else is secondary. PRODUCT ENGINEERING AT POLAR Fullstack engineerings with a strong product sense and taste. As we grow, we'll gradually move towards more specialized roles between backend vs. frontend vs. product engineering. Therefore, we ask about your main strength in the application to ensure we maintain a strong & balanced team across the spectrum. OUR STACK * Frontend: React & Next.js with Tailwind CSS, Shadcn, TanStack Router and more. * Backend: Python (FastAPI), Postgres, Redis, Dramatiq. * Cloud: Vercel, Render & AWS. Always subject to change as we scale and new technologies emerge. ROLE & RESPONSIBILITIES We’re hiring exceptional Senior Product Engineers to join our growing remote-first team in Europe. You'll work across our entire stack to ship innovative features, enhancements and delights; obsessing over the developer experience and empowering them to scale their businesses. You're very comfortable jumping between frontend, backend, and infrastructure to autonomously identify, build, ship and scale features. We don't have a lot of meetings, red tape or code reviews. We celebrate and optimize our organisation for shipping high-quality software fast – each engineer deploys countless times a day. So you'll be given a lot of agency and autonomy to move fast towards our mission and serving our developer community. * Ship daily towards building the best monetization platform for developers in the world. * Design, build, and ship features, enhancements and delights end-to-end – jumping between frontend, backend, and infrastructure. * Collaborate with the team on architecture design, best practices, and ensuring high-quality code across our stack. * Continuously improve the quality of services and the overall developer experience. * Engage frequently with our developer community to identify pain points and solve them. WHAT WE'RE LOOKING FOR * 7+ years of experience building, shipping and scaling high-quality software. * You ship fast and can solve any problem thrown at you end-to-end. * Strong proficiency with our stack or a variety of similar programming languages and ability + desire to quickly learn and pickup new tools. * Strong problem-solving abilities with an eye for developer experience. * Experience with cloud infrastructure and multi-cloud environments. * Excellent collaboration skills - comfortable working closely with a small, high-performing team. It's a startup so we all have to lean-in across the board to. * You care deeply about your craft - be it delightful animations, thoughtful edge-case handling, developer experience or performance optimizations. * (Bonus) You're an ex-founder/startup CTO, open source maintainer or indie hacker. * (Bonus) Experience working with payments, billing, or developer tools. WHAT WE OFFER * Meaningful ownership: Small team & large surface area. You’ll directly influence how the company and platform scale. * Product-driven culture: We build to empower the next generation of software companies - and operate with the same builder mindset internally. * Competitive compensation: Salary and equity aligned with the impact of the role. * Exceptional team: Work with highly talented team members distributed across Europe. * Remote-first environment: Work from anywhere in Europe, with a home office setup budget available. * Annual team offsites: As the team is spread across Europe, we gather in person at least once a year to collaborate, plan, and spend time. * Health Benefits: Comprehensive health coverage to support you and your family. * Parental leave: Paid parental leave aligned with the standards and regulations of your local jurisdiction. HOW WE HIRE Polar is a remote-first company, with team members across Europe, and our hiring process is fully remote via video calls and email. HIRING PROCESS 1. Application Review: We review your application and previous work. 2. Intro call: A short conversation with Birk (Founder and CEO) to learn more about you and give you a chance to learn more about Polar. 3. Take-home Assignment: A practical exercise designed to reflect the kind of problems you would work on in the role. 4. Assignment Review: We review your assignment and feedback together 5. Team Conversations: 2-3 video calls where you get the chance to meet future team members. 6. Offer 🎉 7. Reference Calls