Sr Backend Engineer | Integrations Squad

Sr Backend Engineer | Integrations Squad page is loaded## Sr Backend Engineer | Integrations Squadremote type:
Hybridelocations:
Madrid time type:
Full time posted on:
2 dagen geleden geplaatstjob requisition :
R4333

Permanent Regular

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 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 (Type Script), NestJS (or similar frameworks)
* ** APIs & Integrations:
** REST APIs, SFTP, Async messaging patterns
* ** Data & State:
** Mongo

DB, Postgres

SQL, Click House
* ** Infrastructure:
** AWS, Docker, Kubernetes, Git Lab CI/CD
* ** Observability:
** Datadog
* * You’re a Match If You Have a Few of the Below**
* ** 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…