Backend Engineer (Node.js)

TL;DR

Backend Engineer (Node.js): Building and scaling an on-demand healthcare platform for emerging markets with an accent on API design, business logic, and system integration. Focus on developing high-quality, test-driven services to support rapid expansion across 15 new countries.

Location: Must be based in Spain (Remote or hybrid in Barcelona).

Company

A well-funded health-tech startup founded by McKinsey executives, focused on bringing advanced healthcare services to emerging markets in South America, Africa, and Asia.

What you will do

• Design and develop core business logic and backend services.
• Collaborate with frontend developers to build functional and high-performing APIs.
• Implement test-driven development (TDD) to ensure high-quality, self-documenting code.
• Integrate and connect the platform with existing external systems.
• Write unit and integration tests while developing automation tools for daily tasks.
• Challenge existing ideas to prevent technical pitfalls and ensure efficient solutions.

Requirements

• Must be based in Spain.
• Strong experience with Node.js.
• Proficiency in GraphQL, NoSQL databases, and AWS.
• Experience with test-driven development (TDD) and writing unit/integration tests.
• Ability to produce clean, well-documented, and efficient code.
• Strong collaboration skills for working with cross-functional teams.