Sr Backend Engineer | Integrations Squad

Join Pluxee as a Senior Backend Engineer and play a key role in building the integration layer that connects our platform with our customers' ecosystems. You'll join the Integrations Squad, the team responsible for designing and operating the systems that allow companies, partners, and providers to seamlessly integrate with Cobee by Pluxee. This is a critical mission: our integrations are a strategic entry point to the platform. Reliability, backward compatibility, clear contracts, and operational excellence are essential. We don't just expose APIs - we build robust, scalable integration solutions that external systems depend on every day.

What You'll Do

• Design Integration-First Systems: Design and evolve backend services and APIs that enable secure, reliable, and scalable integrations with customer and partner systems (HRIS, payroll, benefits providers, etc.).
• API & Contract Ownership: Define, version, and maintain API contracts (REST, async events), ensuring backward compatibility and a smooth developer experience for external consumers.
• Handle Real-World Complexity: Build systems that gracefully handle partial failures, retries, idempotency, rate limiting, and inconsistent external data.
• Event-Driven & Distributed Architectures: Evolve existing synchronous flows into scalable, event-driven architectures that support growing integration needs across multiple markets.
• Quality & Reliability at the Edge: Ensure high test coverage (unit, integration, contract tests) and validate integrations through sandbox environments, mocks, and automated validation pipelines.
• Operational Excellence & Observability: Monitor integration health in production, detect anomalies, and troubleshoot issues across system boundaries using logs, metrics, and traces.
• Technical Leadership: Lead by example through strong code reviews, mentoring, and documentation. Help define integration standards, best practices, and reusable patterns for the squad and beyond.

Our Technical Stack

• Backend Core: Node.js (TypeScript), NestJS (or similar frameworks)
• APIs & Integrations: REST APIs, SFTP, Async messaging patterns
• Data & State: MongoDB, PostgresSQL, ClickHouse
• Infrastructure: AWS, Docker, Kubernetes, GitLab CI/CD
• Observability: Datadog

Do you have experience in REST?, * Proven Senior Expertise: 3+ years of experience building and maintaining production-grade backend systems, ideally in the Node.js ecosystem.

• The "Integrations Mindset": Hands-on experience building APIs or partner integrations. Familiarity with external system constraints, SLAs, and contract-driven development.

• Distributed Systems Knowledge: Strong understanding of idemptecy, retries, eventual consistency, race conditions, and failure handling across system boundaries.

• Customer-Centric Engineering: You care about developer experience, clear documentation, predictable behavior, and making integrations easy to adopt and operate.

• Quality & Security First: Experience with automated testing strategies and a strong focus on data protection, authentication, authorization, and secure integrations.

• Growth Mindset: Curious, open to feedback, and motivated to continuously improve both your own skills and the team's engineering culture.

️ 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.

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