Node.js Back-End Engineer

Role: Node.js Backend Engineer

Location: Madrid, Spain (Remote - Must live in Spain) - 1 day per semester at the office

Skills: Node.js, TDD, DDD & CI/CD

Languages Required: Spanish (native/high level) & English (Professional)

🧩 About the Role

We're looking for a Node.js Backend Engineer who thrives in collaborative environments and is passionate about building scalable, secure, and high-quality backend systems. Join our dynamic, product-oriented teams, where autonomy and ownership drive innovation.

🛠️ What You'll Do

Functional Collaboration

• Work closely with QA and Product Owners (3 Amigos model) at the story level
• Coordinate development efforts across user stories, incidents, and tasks
• Challenge and refine feature implementations

Mentorship & Teamwork

• Guide junior engineers through implementation and best practices
• Promote Pair/Mob programming and conduct code reviews

Engineering Excellence

• Observability: Implement and review traces, metrics, logs, and business events using tools like Dynatrace
• Security: Ensure secure coding practices and mentor others
• Deployability: Guide infrastructure as code (e.g., Terraform)
• Code Quality & Performance: Drive best practices in async/multi-threaded code and performance testing
• Scalability & Resiliency: Implement scalable, stateless services and resilient patterns (e.g., retry strategies, circuit breakers)
• Testing: Lead testing strategies (E2E, unit, integration, contract) using TDD
• Architecture & Design: Apply design patterns, OOD, and microservices architecture

🧠 Skills & Experience

• Strong Node.js backend development experience
• Test Driven Development (TDD)
• Domain Driven Design (DDD)
• Object-Oriented Programming (OOP)
• Relational, key-value, and document databases
• Continuous Integration & Infrastructure as Code
• Bonus: Side projects, diverse tech stack knowledge, hidden talents

🤝 What We Offer

• A clear career path for growth
• Support from Software Engineering, DevOps, Cloud Engineers, Tech Leads, and Architects
• Agile methodology (Scrum)
• A collaborative, inclusive, and supportive environment

🌍 Work Culture

You’ll be part of a team that values autonomy, ownership, and continuous improvement. We work in cross-functional squads with a shared mission and strong support network—you’ll never be alone.

📩 Ready to Join Us?

If you're excited to build impactful software and grow with a passionate team, apply now or reach out directly. Let’s build something great together!