Full-Stack Software Engineer

WE'RE LOOKING FOR At thermondo, our mission is to decarbonize every home, and technology is our primary lever for change. We are disrupting a massive industry bogged down by legacy systems and manual work. This is where you come in. We build the intelligent software and automation that gives us a decisive edge, allowing us to operate at a scale and efficiency our competitors can't match. We are looking for a Staff Engineer - Full Stack (f/m/d) to serve as a strategic technical leader. In this role, you will not just solve the problems we hand you; you will identify the problems we should be solving. You will report to a Domain Lead and act as a technically-focused peer, helping to define the vision for our platform and the AI strategies that will differentiate us in the market. IF YOU ENJOY THIS * Drive cross-team technical strategy. You will architect the high-level systems that connect our customer apps, internal tools, and data backbone, ensuring we build for long-term scalability and resilience. * Operate with high-level autonomy. You will translate vague business objectives into concrete technical roadmaps, proactively identifying opportunities for impact without needing a Product Manager to define every step. * Lead our AI Engineering evolution. You will co-design the patterns for integrating LLMs into our code - handling reliability, cost, and evaluation - while demonstrating to the wider organization how to build AI-native software. * Act as a force multiplier. You will elevate the entire department by removing developer bottlenecks, mentoring engineers, and championing AI-augmented workflows. * Bridge the gap between Business and Tech. You will partner with leadership to navigate ambiguity, translating complex architectural trade-offs into business value and leading large-scale initiatives to delivery. AND RECOGNISE YOURSELF HERE * Experienced: You have significant experience (10+ years) in software engineering, including operating at a Lead or Staff level in a modern product company. * Full Stack: You have deep, T-shaped expertise. You are great in Python and Node.js/TypeScript. You understand backend and frontend. You can reason about data flows and architecture, and you can build them too. * "Manager of One": You are self-directed. If dropped into ambiguity, you create clarity. You can effectively manage your time between coding, designing, and communicating without needing constant oversight. * Pragmatic: You avoid over-engineering. You understand that "boring technology" is often best, but you know exactly when to spend innovation tokens (specifically on AI and Cloud scalability). * Great Communicator: You write clear, persuasive technical documents (RFCs, ADRs). You can lead a room of engineers to a consensus even when opinions differ. You can articulate the business implications of technology in a room full of VPs. Bonus points * Production AI: Experience deploying LLMs in production (managing context windows, prompt engineering, vector databases, and evaluation frameworks). * Event-Driven Systems: Deep experience with asynchronous architectural patterns and specific systems like RabbitMQ, Google Pub/Sub and Kafka. * Legacy Migration: Experience strangling a monolith or migrating legacy systems to modern cloud-native architectures without downtime. * Familiarity with Sales: Experience writing software that enables Sales teams (ex: CRM, scheduling). * A passion for climate tech. You're motivated by our mission to decarbonize homes and are excited to apply your skills to a problem that matters. WHAT WE HAVE TO OFFER * In this role, you can expect an attractive compensation package starting from €100.000 * Join a team of Product Managers, Software Engineers, Designers, Data and Salesforce people who are excellent in their craft and are happy to share their knowledge and help you grow alongside them * Our team is using the latest frameworks and is working with a modern tech stack to build powerful products for our customers, craftspeople, and internal teams * Boost your skills with a dedicated annual learning budget to spend on conferences, courses or books  * Choose your own AI coding companion – we provide you with the license for the AI model or assistant of your choice  * We offer a challenge with purpose - the better our tech, the more people will live climate-neutral and the better the world becomes for future generations * We offer a fantastic culture in the tech team and beyond * Modern office in the heart of Berlin * Work from home - up to 3 days a week * You receive an Urban Sports Club membership & nilo.health membership * You can lease a job bike or bring your dog one day/week * Corporate Benefits at more than 100 partners * 20% employer contribution to your pension and disability insurance ABOUT US Every application is welcome here - regardless of gender, nationality, ethnic and social background, religion, ideology, disability, age, sexual orientation or identity. We are convinced that everyone is valuable and deserves a fair chance. Software has always been part of thermondo’s DNA. We have been the first to digitize trade a decade ago. Today, our proprietary software enables 800 thermondinos to scale the heating transition in Germany. But we want more. We want to enable fully digitized and smooth customer journey ensuring that all processes are coming together: commercial funnel, procurement, product, supply chain, project management, finance, dispatch, HR planning as well as customer facing offerings for maintenance and home energy management.  Our product & tech teams in Xberg - the heart of Berlin - are a highly diverse and multicultural bunch. They make sure that we can make a difference and scale the energy transition in Germany and work closely together with all departments.    Join our product & tech teams and pave the way for climate neutral living. DEIN BEWERBUNGSPROZESS * An initial interview with your Talent Acquisition partner, Jenny  * If we are both on the positive side, you will talk to our VP of Engineering Pedro * Then, you will have the opportunity to meet with your to-be teammates.  * Finally, Become a thermondino! *The exact salary level will be defined during the interview process, based on your experience, qualifications, and the level of responsibility required for this role

ABOUT PARLOA Parloa’s mission is to make every customer conversation feel effortless for both customers and the companies serving them. As agentic AI accelerates, Parloans are shaping the foundation of a new era in customer experience, one where customer support is no longer transactions, but meaningful exchanges. It is not just a vision; Parloa has powered over ONE BILLION interactions between global enterprise brands and their customers, with companies like Booking.com, HealthEquity, Allianz, SAP, BarmeniaGothaer, and TUI already deploying Parloa at scale. Frontend engineers at Parloa primarily strengthen our central frontend platform—microfrontend architecture, Server-Driven UI library, and our shared design system—so product teams can ship agent management platform UI faster with clear ownership and fewer coordination dependencies. Some engineers are embedded in product teams for deeper, custom UI where platform patterns do not apply. ABOUT THE ROLE: * Define and drive technical strategy for the frontend platform: microfrontend architecture, Server-Driven UI library, design system, and developer experience for internal and product consumers. * Lead cross-team architecture so platform capabilities and product features integrate through clear contracts (APIs, UI boundaries, release and rollout patterns)—with enough full-stack depth (TypeScript/Node services, integration with backend teams) to own end-to-end platform outcomes, not only React surfaces. * Balance short-term velocity with long-term resilience, making smart trade-offs on complexity, cost, and scalability. * Remain hands-on on highest-leverage platform code, critical design reviews, and precedent-setting implementations. * Act as a force multiplier by mentoring Staff Engineers and influencing the careers of future Principal-level talent.  * Serve as a trusted advisor to leadership, including advising on frontend capacity, standards, and hiring bar. * Set cultural standards for fearless iteration, bias for action, and pragmatic perfectionism—design for tomorrow, build for today. * Lead frontend alignment with the Architecture Office and drive org-wide frontend technical direction—including how the platform evolves, how embedded product UI stays compatible, and how we scale agent management platform UI without coordination tax. * Demonstrate org-level impact across microfrontend boundaries/versioning and independent deployability, Server-Driven UI library adoption decisions, and design-system governance (contribution model, migration strategy, and breaking-change management) with measurable improvements across multiple teams. AREAS OF OWNERSHIP: * Platform & Architecture Own the frontend platform's technical direction — microfrontend architecture, cross-team integration contracts, and full-stack platform outcomes from React surfaces through to Node services and backend integrations. * Product Enablement Drive strategy and governance for the Server-Driven UI library and design system — contribution models, migration, breaking-change management — and define the developer experience that lets product teams ship fast and safely. * Engineering Leadership Set org-wide frontend technical direction in partnership with the Architecture Office, advise leadership on standards and hiring bar, and directly develop the next generation of Staff and Principal engineers. OUR TECH STACK: * TypeScript, React, React Router, styled-components, TanStack Query, nanostores * Infrastructure: Micro-frontends with single-spa, Webpack, Turborepo, pnpm workspaces, GitHub Actions, Azure Blob Storage * Testing: Vitest, RTL, MSW, Playwright WHO YOU ARE: * Professional experience building and shipping production systems in fast-moving environments. * You take full ownership. When something matters, you drive it to completion and stand behind the outcome. * You have a strong bias for action. You move quickly, make informed decisions, and iterate based on real-world feedback. * You are comfortable operating in ambiguity and can turn fuzzy problems into shipped results. * You think in systems: scalability, reliability, performance, and security are part of your default design mindset. * You define success clearly and measure it; you care deeply about customer impact and business outcomes. * You hold a high craftsmanship bar: clean, secure, well-tested code is your baseline. * You give and receive candid feedback, and you elevate those around you through mentoring and technical leadership. * You balance pragmatism with ambition, building for today while designing for tomorrow. * You want to help build not just features, but one of Europe’s most respected engineering organizations. OUR VALUES At Parloa, we hire, promote, and evaluate based on cultural and technical excellence. You’ll thrive here if you: * Earn Trust – act with transparency and reliability. * Obsess Over Customers – always start with the customer problem. * Think Big – set bold goals and pursue them fearlessly. * Have Integrity – do the right thing, especially when it’s hard. * Disagree & Commit – debate with candor, align fast, and deliver. * Own It – take full responsibility for outcomes, not just tasks. * Dive Deep – master the details without losing sight of the big picture. * Bias for Action – move fast, decide quickly, iterate fearlessly. * Deliver Value – measure success by customer and business impact. * Insist on the Highest Standards – raise the bar continuously. * Go the Extra Mile – make the impossible possible. * Hire & Elevate the Best – raise the bar with every hire YOUR RECRUITING PROCESS AT PARLOA Recruiter Call → Technical Peer Interview → 360° Tech Interview Loop → Bar Raiser   WHY PARLOA?  We’re at the beginning of a new era in customer experience, one where AI doesn’t just respond, but understands, reasons, and takes action. We’re building agentic AI that enterprises trust with their most important customer moments: complex questions, high volumes, real stakes. When millions of people reach out to a brand, those interactions aren’t just support tickets; they’re defining experiences. We’re here to raise the standard: making every conversation seamless, intelligent, and genuinely helpful. If you care about shaping how businesses and customers connect at scale — and want your work to matter in real, everyday moments—this is where you do it. At Parloa, ownership isn’t a buzzword; it means being accountable for outcomes, not just tasks. We operate in a category that’s evolving fast, where the bar is high, and the problems are complex. We hire people who think in solutions, communicate with clarity, and follow through. People who are comfortable making decisions, taking responsibility, and raising the standard for themselves and those around them. We’ve grown beyond the earliest startup phase, but we’ve kept the intensity: fast execution, direct feedback, and a strong expectation to contribute meaningfully from day one. Backed by leading global investors like General Catalyst, EQT Ventures, and Altimeter Capital, we’re scaling with a clear ambition: to become the global category leader in enterprise-grade conversational AI.   ---------------------------------------------------------------------------------------------------------------------------------- Parloa is committed to upholding the highest data protection standards for our clients' and employees' data. All our employees are instrumental in ensuring the utmost care, GDPR, and ISO compliance, including ISO 27001, in handling sensitive information. Parloa is an e-verify employer in the USA. Please click here to learn more. * We provide equal opportunities to all qualified applicants regardless race, gender, sexual orientation, age, religion, national origin, disability status, socioeconomic background and other characteristics.