Senior React Developer (Freelance) - Brussels

About the Opportunity<p>We are looking for an experienced <strong>Senior React Developer</strong> 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.</p>What You'll Do<ul><li>Develop and maintain complex React-based frontend applications.</li><li>Work closely with Java backend developers to design and implement new features.</li><li>Contribute to technical discussions and solution design.</li><li>Deliver high-quality, maintainable, and scalable code.</li><li>Participate in code reviews and promote engineering best practices.</li></ul><p>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.</p> Your Profile<p>We are looking for someone who:</p><ul><li>Has <strong>at least 5 years of professional experience in frontend development</strong>.</li><li>Has strong, hands-on experience with <strong>React</strong> and modern JavaScript/TypeScript.</li><li>Has experience working within <strong>monolithic application architectures</strong> and understands the challenges and advantages of enterprise environments.</li><li>Enjoys collaborating closely with <strong>Java backend developers</strong> to deliver high-quality end-to-end solutions.</li><li>Is capable of working <strong>independently</strong>, taking ownership of tasks from analysis through delivery.</li><li>Communicates fluently in <strong>English</strong> (written and spoken). English is the only working language for this role.</li></ul>