Backend / Full-Stack Developer (Node.js · TypeScript · Python)

We are looking for a mid-level backend/full-stack developer (3–5 years) who builds services, APIs, and integrations end-to-end. Strong Node.js/TypeScript or Python core competency required, PostgreSQL hands-on, and a working understanding of containers and CI/CD. Operating model is fully remote from Poland under a B2B contract. About Thalox Sphere Thalox Sphere GmbH is a Munich-based boutique software studio inside the international Thalox group. We build custom software, AI integrations, and process automation for SMEs that don't fit the off-the-rack consulting model — Odoo, HubSpot, Supabase, n8n, and modern LLM stacks are our daily tools, but we stay technology- and vendor-agnostic and pick best-fit per client. Recent work includes the autohelden.com digital infrastructure (built in four weeks). About the role You will join a small, AI-first engineering team that spans Munich (HQ), Romania, and — newly — Poland. As Backend / Full-Stack Developer you'll build services, APIs, and integrations end-to-end — from API design through deployment to monitoring — and work side-by-side with our DevOps engineer (a parallel Poland hire). You report directly to CEO Martin Ansel in Munich; decision paths are short and there is no middle layer. Why this role Build real products end-to-end — API design through production deployment AI-first culture: work with LLMs and modern SaaS, not legacy Small team, high autonomy, real impact — no corporate bureaucracy Fully remote from Poland with a friendly CET overlap Direct collaboration with the CEO — short decision paths Shape the tech stack, architecture, and engineering practices from the ground up ,[Own backend services from concept to production: design, implement, test, deploy, monitor., Build and maintain REST/GraphQL APIs and integrations with third-party SaaS and AI/LLM providers., Design Database schemas, write efficient queries, manage migrations and Row-Level Security., Write unit and integration tests as a natural part of the workflow., Collaborate closely with the DevOps engineer to deploy services, read logs, and respond to alerts., Participate in code reviews, technical discussions, and architecture decisions., Continuously evaluate new tools and SaaS services that could accelerate the team.] Requirements: Node.js, TypeScript, Python, PostgreSQL, REST API, GraphQL, Git, Docker, CI/CD, Unit testing, React, Next.js, n8n, Odoo, HubSpot, LLM integration, OpenAI, Anthropic Tools: GitHub, GIT, GitHub Actions. Additionally: Flat structure, Small teams, International projects, Guaranteed minimum utilization (40%), 14 days net payment terms, Direct collaboration with CEO, AI-first stack (LLMs, modern SaaS).