Senior Product Engineer — End-to-End, AI-Powered

Pluxee Belgium SA; Madrid; On-site; EUR 70,000 - 100,000; Full time

Job summary

Pluxee Belgium SA is seeking a Senior Product Engineer to own features end-to-end—backend, frontend, and AI-assisted workflows—across core domains like Benefits, Payments, and Leaders. You will design resilient, scalable systems, lead technical discussions, and mentor junior engineers in a fast-growing, global environment.

Join Cobee by Pluxee to help revolutionize employee compensation, with coverage across multiple markets and real-time state management.

Qualifications

• 5+ years of building production-grade applications across backend/frontend.
• Experience with TypeScript ecosystem is a plus.
• Ability to work across layers and ownership of features end-to-end.

Responsibilities

• Own Features End-to-End: from domain design to backend, UI, and observability.
• Design for resilience at scale with high-volume traffic and data consistency.
• Evolve distributed architectures to scalable, event-driven systems.
• Champion automated testing (unit/integration/e2e) and performance testing.
• Drive observability and operational excellence in production.
• Provide technical leadership via code reviews and mentoring.
• Leverage AI tools daily to accelerate development and workflows.

Skills

Senior experience

Full-stack

AI tooling

Distributed systems

Payments domain

Tools

Node.js

NestJS

React

React Native

MongoDB

Redis

PostgreSQL

Docker

Kubernetes

GitLab CI/CD

Sentry

Datadog

New Relic

PostHog

GitHub Copilot

Claude

ChatGPT

GenAI assistants

GitHub

GitLab

JIRA

Confluence

Job description

Pluxee Belgium SA is seeking a Senior Product Engineer to own features end-to-end—backend, frontend, and AI-assisted workflows—across core domains like Benefits, Payments, and Leaders. You will design resilient, scalable systems, lead technical discussions, and mentor junior engineers in a fast-growing, global environment.

Join Cobee by Pluxee to help revolutionize employee compensation, with coverage across multiple markets and real-time state management.