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# Technical Stack Backend

- **Company:** Pluxee
- **Location:** Spain
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, JIRA, Automation of Tests, Code Generation, Code Review, Distributed Systems, Fault Tolerance, Github, Message Broker, Microsoft OneNote, MongoDB, Node.Js, Payment Gateway, Redis, TypeScript, Datadog, GitHub Copilot, ReactJS, Caching, Reliability of Systems, Backend, Gitlab, Event Driven Architecture, Stripe, Gitlab-ci, Kubernetes, Slack, Sentry, React Native, NestJS, New Relic (SaaS), GPT, Docker
- **Published:** August 15, 2026
- **Apply:** https://es.trabajo.org/oferta-4112-f347dc4a4bb00cc0469cb52d893511e7

## About the Role

years of experience developing production-grade applications. Experience within the Node.js ecosystem will be a plus. Distributed Systems Mastery: 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 plus. AI-Empowered Developer: A strong inclination to lean on AI tools for problem-solving, code generation, and workflow optimization, always looking for ways to work smarter and improve team efficiency. 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. Spanish & English fluency. ️ Happy at work

## Description

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. Key Responsibilities 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. AI-Driven Execution: Actively leverage AI tools and coding assistants on a daily basis to accelerate development cycles, automate repetitive tasks, and optimize overall team processes and delivery speed. Our Technical Stack Backend Core: Node.js (TypeScript), NestJS (or similar frameworks). Data & State: MongoDB (Atlas), Redis for caching and distributing locking and PosgreSQL for our ledger database Infrastructure: Docker, Kubernetes, GitLab CI/CD (deploying multiple times daily). Observability: Sentry and Datadog/New Relic for real-time monitoring. AI & Productivity: GitHub Copilot, Claude Sonnet, ChatGPT, and other GenAI assistants. 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 are a match Proven Senior Expertise: 5+


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