Senior Backend Developer | Node.js + Fastify | Hybrid Brussels

Orbis Group; Brussel; Hybrid; EUR 78,000 - 106,000; Full time

Job summary

Orbis Group, in partnership with a Brussels-based startup, seeks a Senior Backend Developer to join a high-priority fleet management project. You will work on production-grade APIs and services, own feature delivery, and contribute across both new development and bug fixes.

The role is Brussels/Hybrid with an initial 3-month contract at circa €500/day, with potential to extend; you will integrate into an existing codebase and collaborate with an agile team in a fast-paced environment.

Qualifications

• Strong commercial experience with Node.js in production systems.
• Experience with Fastify is highly desirable.
• Experience building and maintaining production APIs/backend services.
• Comfortable joining an existing codebase and becoming productive quickly.
• Experience using AI-assisted development tools is beneficial.

Responsibilities

• Take ownership on feature development and bug fixing for the fleet management platform.
• Work across new features and ongoing support within an existing production environment.

Skills

API design

Backend development

Bug fixing

Tools

Node.js

Fastify

AI-assisted tools

Job description

Orbis Group, in partnership with a Brussels-based startup, seeks a Senior Backend Developer to join a high-priority fleet management project. You will work on production-grade APIs and services, own feature delivery, and contribute across both new development and bug fixes.

The role is Brussels/Hybrid with an initial 3-month contract at circa €500/day, with potential to extend; you will integrate into an existing codebase and collaborate with an agile team in a fast-paced environment.