AI-Native Fullstack Engineer, Go, React

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COLIBRIX ONE

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2020

💳 Fintech

🏦 Banking

🔌 API

Fintech • Banking • API

COLIBRIX ONE is an all-in-one payments platform and electronic money institution that provides card acquiring, virtual card issuance, business accounts (IBAN/SEPA) and developer-facing payment APIs and solutions. The company is a principal member of Visa and Mastercard and is FCA- and MFSA-authorised, offering scalable, secure payment processing, mass payouts, open banking and compliance-backed infrastructure for businesses and agencies of various sizes.

📋 Description

• 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

🎯 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