Senior Software Engineer with English (España)

We’re looking for a Senior Software Engineer with a strong backend focus and some frontend experience to help stabilize and extend an existing legacy system during a critical growth period. You’ll be working in partnership with a fast‑growing technology company focused on adaptable storage and logistics solutions, supporting both internal back‑office tools and a marketplace mobile app.

Responsibilities

• Design, build, and maintain backend services using Node.js and TypeScript.
• Extend and stabilize a legacy codebase, improving reliability and performance.
• Develop and maintain REST or GraphQL APIs.
• Contribute to frontend work when needed using Angular.
• Support system performance, reliability, and scalability during peak operational periods.

Qualifications

• 5+ years of experience in backend or full‑stack engineering, with a strong backend focus.
• Strong proficiency in Node.js and Nest.js.