Backend Engineer (Mid-Level) - (Node.js / TypeScript)

We’re supporting a client on a mid-level Backend Engineer role within a large European tech platform operating at scale. This is a direct B2B contract with the client, working on high-traffic consumer platforms used daily by millions.

You’ll be joining a core engineering team that builds reliable, scalable Node.js services at the heart of the platform. This isn’t a “feature factory” — your work will have a direct impact on how the platform performs, scales, and evolves.

• Design, develop, and maintain backend services and APIs for high-traffic production systems.
• Work closely with other engineers to implement scalable, reliable, and maintainable systems.
• Collaborate with Data Engineers, Product Analysts, and other teams to integrate data-driven features and services.
• Continuously optimize backend components for performance, scalability, and security.
• Contribute to team tooling and automation (CI/CD, testing, monitoring).
• Take ownership of your work and proactively propose improvements across the stack.

• 5+ years of experience in backend or full-stack development (Node.js / TypeScript preferred).
• Solid experience with APIs, microservices, serverless, or event-driven architectures.
• Strong problem-solving skills, curiosity, and ability to work autonomously in a collaborative team.
• Good communication skills: ability to give and receive feedback, and work cross-functionally.
• Nice to have: experience with cloud platforms (AWS), DevOps, or data engineering.

• Work on high-impact, high-traffic systems used by millions of users.
• Be part of a core engineering team with influence on architecture and technical direction.
• Hybrid setup: 3 days in the office in Bucharest, 2 day WFH.
• Direct B2B contract with the client.
• Collaborative, autonomous, and supportive environment.
• Opportunity to grow your career while tackling real-world scale and complexity.

Recruitment process:

• Screening call with the Recruiter
• Technical interview (Karat)
• Final Technical interview with engineering team