Backend Developer | Fintech

Madrid🌐 Remote💼 Full-time🗓 2026-06-12 → 2026-09-23

Core

Design, maintain, and scale critical APIs and build integrations with external partners within a fintech platform ecosystem.

Role type

Backend Developer (Node.js/TypeScript)

Builds

Microservices, API integrations, and product features for the financial sector

Domain

Fintech, Microservices

Deliverable

production ML models | product features

Required skills

Node.js, TypeScript, NestJS, PostgreSQL, RabbitMQ, API design, system integration

Preferred skills

CI/CD pipeline experience, AI tool integration (Claude), autonomous problem solving

Technologies

Node.js, TypeScript, NestJS, RabbitMQ, PostgreSQL, AWS, Claude

Responsibilities

Design and maintain critical APIs, build integrations with external partners, participate in innovation sprints, collaborate with CTO, frontend, BI, and QA teams

Seniority

Mid-level, hands-on IC

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