Back End Developer

Back-End Developer (FastAPI / AI)Location: EU-based (remote)Contract type: B2BWork model: Remote, with in-person weeks at Oslo HQ every two months About the CompanyA rapidly scaling AI product company based in Oslo, building intelligent systems used across the EU. The team operates with extreme ownership values and a bias for action, experienced hires who can lead themselves thrive here. The RoleA back-end focused role for a developer who has built real AI products and knows the modern Python/AI stack inside out. If you've worked with LangChain or LangGraph and understand how to build robust, scalable API backends, this is the role for you. ResponsibilitiesDesign and develop back-end services using FastAPIBuild and integrate AI-powered product featuresWork with LangGraph and/or LangChain to implement agentic and chain-based workflowsCollaborate with cross-functional teams across a distributed EU workforce RequirementsStrong, hands-on FastAPI experience (core stack, not just awareness)Demonstrated experience building AI products (not just ML models, actual product delivery)LangGraph and/or LangChain experience requiredEU residency requiredSelf-directed, ownership-driven mindset What's on OfferCompetitive B2B rate (DOE)Fully remote with bi-monthly Oslo in-person weeks (travel covered)A technically ambitious team building at the frontier of AI product development