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Backend Node Express Developer

Madrid🌐 Remote💼 Full-time💰 $33,000–$53,000🗓 2026-04-16 → 2026-09-23

Core

Design, develop, and maintain scalable Node.js + Express applications for national and international clients, ensuring clean architecture and high code quality.

Role type

Mid to Senior Backend Software Engineer (Node.js/Express)

Builds

Production-ready web applications and scalable backend services

Domain

Software Engineering / Web Development

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Node.js, Express.js, Clean Architecture, Scalability, Code Review, CI/CD, Legacy Code Management, Mentoring, Cross-functional Collaboration

Preferred skills

Cloud Infrastructure, Docker, Kubernetes, Microservices, Testing, Systems Integration, AI tools

Technologies

Node.js, Express.js, Docker, Kubernetes, CI/CD tools, Cloud platforms

Responsibilities

Design and develop applications using Node + Express; Participate in architectural design; Review and improve code quality; Mentor colleagues; Propose process improvements; Collaborate with technical and business profiles; Ensure production quality standards

Seniority

Mid to Senior, hands-on IC with mentorship responsibilities

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