Project Engineer

ABOUT WOLT At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In 2022 we joined forces with DoorDash and together we keep on dreaming big and expanding across the globe. Working at Wolt isn’t always easy, but it’s definitely exciting. Here you’ll learn more, build more, and ship more than in most other companies. You’ll be challenged a lot, but also have a lot of fun on the way. So, if you’re a self-starter with drive and entrepreneurial spirit, this could be the ride of your life. ABOUT THE TEAM We, the Marketing Tech team, are looking for a passionate and driven Golang/Python Backend Software Engineer. We are a product-focused team that emphasizes enabling the scaling and efficiency of campaigns and marketing efforts both inside and outside of Wolt. The MarTech team is currently building internal services around marketing and consent use-cases to allow our marketing stakeholders to drive marketing campaigns in and out of the app, and ensure we provide and maintain a compliant experience throughout the whole process. We empower marketing with the tools to fully set up and run their campaigns independently so as not to be blocked by product or engineering. In our team, you can expect to face many different types of projects across the realm of acquiring users and keeping them engaged. You’ll work on both maintaining and expanding existing services, as well as planning and designing new ones. Our project types vary a lot, from services used in the core Wolt flow, services for automation or to enable our Marketing teams, ETL jobs, as well as streaming processing workers. Some examples of projects include our in-house built: * Audience management tool in Golang * Marketing attribution powered by Spark * Consents management platform in Golang * Bid & budget automation platform in Python * Campaign generation tool in Golang * A whole host of ETL jobs written in Python The key business need this role is to fill is the development of a centralized consent platform that allows teams to easily create and deploy compliant consent-gathering experiences. Since the team focuses on providing platforms and tools to enable marketing at Wolt, you can expect cross-team collaboration within Wolt. You’ll also regularly be working with marketing or analytics stakeholders and product leads to see through bringing projects from idea to production. In addition, you’ll collaborate cross-functionally with teams from DoorDash, working on building services and aligning roadmaps across several teams. If you didn't know it yet, we have a strong Python community at Wolt: around 100 of our engineers are actively using Python and sharing knowledge related to its rich ecosystem.  Wolt Tech Talks Youtube channel has recordings from our Python meetups and interesting articles in our engineering blog  📍This role can be based in one of our tech hubs in Helsinki and Berlin. Read more about our hybrid and remote setup here. OUR HUMBLE EXPECTATIONS: 👉 You might be the one if you are an engineer with experience in designing and building top-class software and APIs using modern Golang or Python. We work primarily with grpc, FastAPI, Echo, PostgreSQL, and Spark, and value familiarity with Postgres, Kafka, Redis, as well as monitoring, alerting, and deploying services in production. An understanding of what it takes to build and operate scalable software services is key. Our backend runs on Kubernetes in AWS, so experience with similar cloud infrastructure is a strong plus. We also appreciate a willingness to take ownership and deliver projects end-to-end. 👉 You know what it takes to achieve ambitious goals together. We expect you to be a good communicator, willing to collaborate with people outside of your own team, be a product-oriented and proactive problem solver, willing to bring up issues in a constructive manner to the team and the Wolt Product team at large. 👉 Understanding of marketing principles and workflows will also be a plus, but don't let it get into your way if these are newer things for you, we are sure you'll get the grasp of them! OUR COMMITMENT TO DIVERSITY AND INCLUSION We’re committed to growing and empowering a more inclusive community within our company, industry, and cities. That’s why we hire and cultivate diverse teams of people from all backgrounds, experiences, and perspectives. We believe that true innovation happens when everyone has room at the table and the tools, resources, and opportunity to excel.

MAKE YOUR STORY REAL At Siili, we don’t just talk about AI – we make it real. We build AI-powered solutions that deliver measurable impact, combining data, design, and engineering. From recommendation engines to generative AI, our work goes beyond experiments and proof-of-concepts. We deliver solutions that scale and create value for our clients. As an AI Engineer, you will play a key role in designing, building, and deploying machine learning and AI solutions that help organizations transform how they use data. You’ll work as part of our Data & AI community, alongside data scientists, data engineers, and data architects – but your focus will be on true AI engineering: making models work in production, ensuring reliability, scalability, and performance.  What you’ll do * Design and implement end-to-end AI solutions, from prototyping to production deployment. * Build and optimize LLM-powered applications and agentic systems integrated into real business processes and systems. * Collaborate with data scientists to turn models into robust, scalable products. * Apply MLOps practices to ensure reproducibility, monitoring, and continuous improvement. * Work with modern cloud environments (Azure, AWS, GCP) and open-source AI frameworks. * Stay curious about the fast-evolving AI landscape, and bring that insight into client projects. What we’re looking for We are looking for an experienced AI Engineer who has built real AI solutions – beyond using APIs or experimenting with models. We hope you recognize yourself in most of these: * 2+ years of experience in AI/ML engineering or data science, with a solid understanding of key ML concepts such as classification, regression, NLP, and generative AI. * Experience in building production-grade LLM and agentic applications, incl. evaluation, monitoring, and scaling. * Knowledge of core LLM concepts e.g. tokenization, RAG, CoT, reasoning models, memory, fine-tuning, tool use, and self-correction. * Hands-on experience with MLOps, CI/CD, containers, and cloud environments. * Ability to design and maintain data pipelines, ensuring model reliability and performance in production. * Curiosity and drive to stay ahead of developments in AI and apply them responsibly. * Excellent communication and consulting skills — able to guide stakeholders, create understanding, and inspire confidence around AI capabilities. * Fluent in Finnish and English. Relevant technologies: * LLMs and LLM middleware: GPT, Claude, open-source models, LiteLLM, vLLM * Agent technologies: MCP, agent/workflow frameworks (LangGraph, LlamaIndex, Haystack, Magentic, Strands) * Platforms, e.g. Azure AI Foundry, Amazon Bedrock, Snowflake and Databricks * Cloud: Azure, AWS, GCP * Python * Vector databases, e.g. Pinecone, pgvector * AI powered development tools: ChatGPT, Cursor, GitHub Copilot, Claude Code, OpenAI Codex What we offer * A technically strong and collaborative community: You’ll work alongside experienced data professionals who support each other, share insights, and aim for excellence in everything we do. Our culture values respect, autonomy, and peer-driven improvement. * Opportunities to lead and influence: Whether you're passionate about architecture, data platforms, or AI enablement, you'll have the freedom to take ownership and shape solutions that matter. * Real-world impact, not just buzzwords: You'll help deliver scalable, meaningful Data & AI solutions with clear ties to business strategy – not just experimental prototypes. * Continuous learning, backed by top partnerships: We invest in your growth through mentoring, training, and hands-on access to the latest tools via our partnerships with Microsoft, Databricks, Nvidia and more. * Practical benefits: Flexible hybrid work, well-being support, hobby clubs, daycare support for sick children, and a share option program. * Company with a mission: We have a clear vision and purpose, and unique opportunity for you to make your mark as we shape the Data & AI story for a leading IT service company. * Mental well-being at the core: We know that thriving at work requires more than technical skills. That’s why we offer support through services like Focus Tiger, provide in-house coaching, and ensure that all our leaders have completed Brain-Friendly Leadership training with the NeuroLeadership Institute. You’ll have access to tools and support that help you take care of your mind as well as your career – because real impact starts with well-being. * A culture shaped by Joy, Ambition, Responsibility and a Humane touch: At Siili, we believe that great results stem from meaningful work, psychological safety, and the courage to act responsibly. You’ll be trusted, supported and encouraged to grow as your authentic self – while contributing to a more sustainable digital future. At Siili, you’re not just coding models. You’re making AI real – in production, at scale, with impact. Make AI Real!