Create a better tomorrow with the payment solution that you know and understand from the inside out.
AI-Native Fullstack Engineer, Go, React
Location
Poland
Posted
12 days ago
Salary
0
Seniority
Senior
Job Description
AI-Native Fullstack Engineer, Go, React
COLIBRIX ONE
• Take a spec and drive it to production: clarify ambiguities with the spec author instead of guessing, decompose work into small verifiable increments, execute via AI agents • Design verification before generation: acceptance criteria, tests, invariants and API contracts that make agent output checkable • Review and accept agent-generated code: catch silent scope creep, tests fitted to bugs, hallucinated APIs, code that passes but does the wrong thing • Step in and code by hand when an agent hits a dead end (mostly Go) • Build and tune the agent toolchain: skills, prompts, guardrails, workflows — and measure what matters: first-pass acceptance rate, rework volume, spec-to-production cycle time
Job Requirements
- 3–5 years of professional software engineering experience
- Strong Go backend engineering: services, APIs, concurrency, data consistency — this is where mistakes cost the most (our stack: MongoDB, NATS, gRPC)
- Comfort with event-driven architecture: any message broker (we use NATS), idempotent consumers, outbox, sagas/compensations, retries with DLQ, eventual consistency
- Working React/TypeScript: enough to deliver and review SPA features built on top of our APIs
- Payments/fintech experience is a strong plus: idempotency, transactional integrity, money handling, audit trails; subscriptions and recurring billing — an even stronger plus
- Proven ability to read, debug and refactor code you didn't write — most of this role is review and acceptance, not typing
- Hands-on production experience with AI coding agents — not demos
- Discipline to work from specs and keep requirement → code → test traceability
Benefits
- Opportunity to shape the future of fintech solutions within a growing company
- Collaborative, horizontal team structure that values your expertise and ideas
- Continuous learning and development opportunities to enhance your skills and career growth
- Competitive salary and benefits package
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