Oliver James Associates - Senior React Developer

We are looking for an experienced Senior React Developer to join an established development team working on a large-scale enterprise application. This is a long-term freelance opportunity for professionals who enjoy building robust frontend solutions while collaborating closely with backend engineers in a mature, monolithic technology environment. Working model

Location: Brussels, Belgium

Onsite Requirement: 50% onsite presence is mandatory. Candidates must be comfortable working from the client's offices on a regular basis

Contract Type: Freelance

What you'll do

Develop and maintain complex React-based frontend applications

Work closely with Java backend developers to design and implement new features

Contribute to technical discussions and solution design

Deliver high-quality, maintainable, and scalable code

Participate in code reviews and promote engineering best practices

If you are a senior React developer who thrives in enterprise environments, enjoys close collaboration with backend teams, and is looking for a long-term freelance opportunity in Brussels, we'd love to hear from you.

We are looking for someone who

• Has at least 5 years of professional experience in frontend development
• Has strong, hands-on experience with React and modern JavaScript/TypeScript
• Has experience working within monolithic application architectures and understands the challenges and advantages of enterprise environments
• Enjoys collaborating closely with Java backend developers to deliver high-quality end-to-end solutions
• Is capable of working independently, taking ownership of tasks from analysis through delivery
• Communicates fluently in English (written and spoken). English is the only working language for this role