TL;DR

Senior Backend Engineer (Payments): Designing and optimizing robust backend services for a global employee benefits platform with an accent on transactional precision, idempotency, and fault tolerance. Focus on evolving distributed architectures, ensuring high-stakes quality, and driving operational excellence in high-volume payment systems.

Location: Hybrid in Madrid, Spain

Company

Pluxee is a global player in employee benefits and engagement that operates in 31 countries, helping companies attract, engage, and retain talent.

What you will do

  • Design and optimize robust backend services for high-volume traffic and 100% data consistency.
  • Evolve existing systems into scalable, event-driven distributed architectures.
  • Ensure high-stakes quality through comprehensive testing (unit, integration, acceptance) and performance simulations.
  • Monitor service health in production, using observability tools to proactively identify and resolve bottlenecks or anomalies.
  • Share expertise through deep code reviews, mentoring junior engineers, and documenting engineering standards.

Requirements

  • 5+ years of experience developing production-grade applications, specifically within the Node.js ecosystem (TypeScript).
  • Direct experience with banking systems, payment gateways, ledger systems, or reconciliation processes.
  • Deep understanding of distributed systems mastery, including race conditions, eventual consistency, idempotency, and message brokers.
  • Systematic approach to troubleshooting complex issues in high-concurrency environments.
  • Extensive experience with automated testing patterns and a "shift-left" security mindset.
  • Fluency in English and Spanish.

Culture & Benefits

  • Meaningful job contributing to the future of employee benefits and impacting millions of lives and local communities.
  • Be part of a multicultural, fast-paced, and innovative team environment.
  • Emphasis on authentic care for people, wellbeing, and work-life balance.
  • Inclusive workplace that embraces diversity and offers equal learning and growth opportunities.