Tech Lead (Java, AI Agents)

Exerizon; Warszawa; Remote; PLN 180,000 - 280,000; Full time

Benefits offered by this job

High Impact

True Flexibility

No Red Tape

Job summary

Exerizon is hiring a Software Engineer to build agent-facing services for its AI orchestration platform. You will own features end-to-end, work with client teams, and ship under client deadlines in a remote-first setup with occasional on-site in Warsaw.

You should be proficient in Java 25 and Spring Boot, have hands-on AI/LLM experience, and a strong sense of architecture and delivery. Polish fluency and professional English are required.

Qualifications

• Strong, current Java experience (Java 25) and Spring Boot.
• Hands-on AI/LLM engineering with production-grade work.
• Ability to read a messy system, propose clean boundaries, and defend trade-offs.
• Proven delivery of production features under real deadlines.
• Infrastructure literacy: CI/CD, containers, and Kubernetes basics.
• Fluent Polish for client engagements and professional English.

Responsibilities

• Build Java/Spring Boot services for AI agents in production.
• Own features end to end from design to production with client teams.
• Apply architectural patterns and defend trade-offs in a fast-moving codebase.
• Design integration points between the platform's agent layer and client systems.
• Operate deployments within CI/CD and Kubernetes-based setup.

Skills

Java

AI/LLM engineering

Design patterns

Delivery track record

CI/CD basics

Polish language

Professional English

Tools

Kubernetes

Helm

Terraform

PostgreSQL

Go

CI/CD tooling

GitLab / GitHub

Job description

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.