Tech Lead (Java, AI Agents)

Contract: B2B, Full-time Location: Remote-first, occasional on-site in Warsaw for client engagements Start Date: Immediate Polish language required 🚀 The Role Exerizon delivers an AI-native SDLC platform used by enterprise clients in banking and insurance. We're a small team, we ship production code, and there's zero corporate theatre. We're looking for a Software Engineer who can build the agent-facing services our AI orchestration runs on, own features end to end, and ship under real client deadlines. 💻 What You'll Be Doing Build AI Agent Capabilities — Design and implement the Java/Spring Boot services our AI agents call in production: the tools, integrations, and business logic behind the orchestration. Own Features End to End — Take work from design through production, working directly with client engineering teams on requirements and constraints. Apply Real Architecture — Bring design patterns and clean boundaries to a fast-moving codebase. Defend the trade-offs — don't just make it compile. Integrate with Client Systems — Design integration points between the platform's agent layer and client-side systems and APIs. Operate the Deployment — Work day-to-day in our CI/CD and Kubernetes-based setup, without needing to own the underlying infrastructure. ❗ Mandatory Strong, current Java — we run on the latest (Java 25) and Spring Boot, with enough depth to justify a design choice, not just ship one. Hands-on AI/LLM engineering — you've built something that calls an LLM or orchestrates agents in production, not just run a demo. Design patterns and architectural judgment — you can read a messy system, propose a clean boundary, and defend the trade-off. Proven delivery track record — shipped production features independently under real deadlines, ideally in a contract or consulting-adjacent setting. Solid infra literacy — comfortable with CI/CD, containers, and Kubernetes concepts, as any strong backend engineer should be. We're not looking for an infra specialist here. Fluent Polish (client engagements run in Polish) and professional English . ⭐ Nice to Have Comfortable working across a mixed environment: GitLab and GitHub, cloud and on-prem, self-hosted CI/CD with supply-chain scanning. Experience with Helm for packaging and deploying services — Terraform is a plus. Postgres/pgvector and hybrid search tuning. Kubernetes and GitOps (ArgoCD). Comfortable reading and writing Go — we use it internally for tooling and automation. Prior experience in banking or insurance, ideally under DORA-adjacent governance. If you want to build the Java behind real AI agents — not another CRUD backend — and can ship under client deadlines without hand-holding, apply. Additional benefits include: High Impact: Direct exposure to the future of business—working on actual AI implementations True Flexibility: Flexible working hours and a healthy remote-first culture (with access to a modern office space in the centre of Warsaw, if you prefer). No Red Tape: We value autonomy, sharp wit, and getting things done over rigid corporate bureaucracy. We review applications on a rolling basis.