Back End Developer

Senior Backend Developer (Nodejs/JS/TS) | 3 Month Contract + extension | Brussels/Hybrid (Flexible)

Orbis have partnered with a Brussels-based startup that builds a software platform helping companies manage employee mobility, commuting benefits and fleet-related services.

They are seeking a Senior Backend Developer to join a high-priority project focused on their fleet management product. The platform manages leasing contracts, vehicle changes, mileage allowances and other fleet-related workflows, with a significant customer rollout planned over the coming months.

You would be joining an existing production environment, taking ownership quickly and working across both new feature development and ongoing bug fixing/support.

Technical requirements:

• Strong backend experience with TypeScript/JavaScript
• Strong commercial experience with Node.js
• Experience with Fastify is highly desirable
• Strong 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

Details:

• Rate: circa €500/day - flex for the right candidate
• Location: Brussels/Hybrid – ideally onsite around 1 day/week
• Contract: Initial 3 months, with strong potential to extend
• Start date: ASAP