Senior Backend Engineer

Job Description:

Pluxee is a global player in employee benefits and engagement that operates in 31 countries. Pluxee helps companies attract, engage, and retain talent thanks to a broad range of solutions across Meal & Food, Wellbeing, Lifestyle, Reward & Recognition, and Public Benefits.
Powered by leading technology and more than 5,000 engaged team members, Pluxee acts as a trusted partner within a highly interconnected B2B2C ecosystem made up of more than 500,000 clients, 36 million consumers and 1.7 million merchants.
Conducting its business as a trusted partner for more than 45 years, Pluxee is committed to creating a positive impact on all its stakeholders, from driving business to local communities, to supporting wellbeing at work for employees while protecting the planet.
Your next challenge
Join Pluxee as a Senior Backend Engineer and become a key contributor to our mission of revolutionizing employee compensation. You'll join the Payments Squad , a high-performance team dedicated to building the engine that moves money globally. We don't just write code; we design resilient, mission-critical systems where transactional precision , idempotency , and fault tolerance are at the heart of everything we do.

What You'll Do

• Design for Resilience: Build and optimize robust backend services capable of handling high-volume traffic while ensuring 100% data consistency and system reliability.

• Evolve Distributed Architectures: Understand the complexities of existing systems and evolve them into scalable, event-driven architectures to meet future global product requirements.

• High-Stakes Quality: In Payments, there is no room for error. You will be responsible for comprehensive testing (unit, integration, and acceptance) as well as advanced load and performance simulations.

• Operational Excellence & Observability: Monitor service health in production, using observability tools to proactively identify and resolve bottlenecks or anomalies.

• Technical Leadership: Share your expertise through deep code reviews, mentoring junior engineers, and documenting engineering standards that elevate the entire squad.

Our Technical Stack

• Backend Core: (TypeScript), NestJS (or similar frameworks).

• Data & State: MongoDB (Atlas), Redis for caching and distributed locking.

• Infrastructure: Docker, Kubernetes, GitLab CI/CD (deploying multiple times daily).

• Observability: Sentry and Datadog/New Relic for real-time monitoring.

• Collaboration: GitHub, GitLab, Slack, JIRA, Notion.

• (Note: You will collaborate closely with our React/React Native teams, but your focus will be 100% Backend).

You're a Match If You Have A Few of Below

• Proven Senior Expertise: 5+ years of experience developing production-grade applications, specifically within the ecosystem.

• The "Payments Mindset": Direct experience with banking systems, payment gateways (Stripe, Adyen, etc.), ledger systems, or reconciliation processes.

• Distributed Systems Mastery: Deep understanding of race conditions, eventual consistency, idempotency, and message brokers.

• Problem-Solving DNA: A systematic approach to troubleshooting complex issues in high-concurrency environments.

• Quality First: Extensive experience with automated testing patterns and a "shift-left" security mindset.

• Growth Mindset: A passion for continuous learning, open to feedback, and a drive to help others improve their craft.

Key changes made:

• Focus shifted: From general "backend" to "transactional precision and idempotency."

• Refined Stack: Moved React/React Native out of your "Daily Stack" to avoid attracting full-stack profiles when you need a backend specialist.

• Added Observability: Included monitoring (Datadog/New Relic) as it's vital for a Senior role in payments.

• Strengthened "Match" section: Added specific fintech requirements like ledger systems and reconciliation.

Languages:
Spanish & English
Your location
Spain
Happy at work
1) A meaningful job: Be the change Help us build the future of employee benefits by bringing to life sustainable and personalized experiences and contribute to make a real impact on millions of lives. Our business model delivers not just for individuals but their communities too, by supporting local businesses and economies.
2) A great culture: People matter – a lot Be part of a multicultural team that moves as one in a fast paced and innovative environment. We respect and care authentically about our people, we embrace wellbeing and work-life balance, new ideas and we have a lot of fun
3) An empowering environment: Be yourself At Pluxee we proudly embrace diversity and value the uniqueness of our talents, fostering an inclusive work place where all abilities are celebrated, and equal learning and growing opportunities are a given.