Permanent Regular Join Cobee by Pluxee as a Senior Product Engineer and become a key contributor to our mission of revolutionizing employee compensation. You'll own features end-to-end — backend, frontend, and the AI-assisted workflows that let one engineer move fluidly across the stack — inside one of our core domains. Join Cobee by Pluxee as a Senior Product Engineer and become a key contributor to our mission of revolutionizing employee compensation. You'll own features end-to-end — backend, frontend, and the AI-assisted workflows that let one engineer move fluidly across the stack — inside one of our core domains. Benefits isn't a simple CRUD layer — it's a rich domain with multi-tenant configurations, eligibility rules that vary by company and country, tax compliance requirements, and real-time state that must always be consistent. Covers areas like health insurance, pensions, custom benefits, food and transport, childcare, training, and renting. A high-performance team dedicated to resilient, mission-critical systems where transactional precision, idempotency, and fault tolerance are at the heart of everything. Leaders — The Leaders domain covers the employee-facing mobile and web experience within the Cobee platform, managing personal data, benefit visibility, and privacy compliance (GDPR/LPD). A domain where company-level configuration, data integrity, and cross-region consistency matter as much as UX. Own Features End-to-End : Take a feature from domain design through backend services to the UI that ships it, and the observability that tells you it's working.
- Build and optimize robust software capable of handling high-volume traffic while ensuring data consistency and system reliability, evolving existing systems into scalable, event-driven architectures as product requirements grow.
- Understand the complexities of existing systems and evolve them into scalable , event-driven architectures to meet future general product requirements .




- You will champion comprehensive automated testing (unit, integration, and e2e) and run advanced load and performance simulations to guarantee rock-solid stability
- Share your expertise through deep code reviews , mentoring junior engineers , and documenting engineering standards that elevate the entire squad .
- Actively leverage AI tools and coding assistants on a daily basis to accelerate development cycles (SDD) , automate repetitive tasks, and optimize overall team processes and delivery speed powered by AI Agents . Stack : Node.js (TypeScript), NestJS (or similar frameworks) , React, React Native .
- Data & State: MongoDB (Atlas), Redis for caching and distr ibuted locking and Pos t greSQL
- Infrastructure : Docker, Kubernetes , GitLab CI/CD ( deploying multiple times daily ).
- Sentry and Datadog/New Relic for real-time monitoring and PostHog .
- GitHub Copilot , Claude , ChatGPT , and other GenAI assistants .
- GitHub, GitLab , Teams , JIRA, Confluence . Proven Senior Expertise: 5+ years of experience building production-grade applications, full-stack or with strong ability to work across layers . ( Experience within Typescript ecosystem will be a plus. )
- Comfort working across backend and frontend, using AI tooling to close gaps in unfamiliar territory.
- Deep understanding of race conditions , eventual consistency , idempotency , and message brokers .
- The " Payments Mindset ": experience with banking systems , payment gateways (Stripe, Adyen, etc.), ledger systems , or reconciliation processes will be a plu s .
- Deep understanding of race conditions , eventual consistency , idempotency , and message brokers is a must .
- Quality First: Get space to try new ideas, experiment and move the world of work forward as you bring new digital experiences
- and moments of connection
- to millions of people. Touch millions of lives and create meaningful change for people and the world we share, supporting our commitments to diversity, sustainability, and local economies.

📌 Engineer/Constructeur (Madrid)
🏢 Pluxee Belgium
📍 Madrid