We’re looking for an experienced Full-Stack Developer (Java + React) to join a major organisation in the financial services industry in Belgium. You’ll work on a range of impactful initiatives - building scalable services, modernising customer-facing applications, and contributing to a high-performing engineering environment that supports innovation across the business.
Logistics
* Position: Freelance Full-Stack Developer – Java & React
* Duration: 12-month contract (with potential extension)
* Location: Brussels, Belgium (Hybrid – 2 days onsite per week)
* Start Date: ASAP
Core Responsibilities
* Design, develop, and maintain full-stack applications using Java (backend) and React (frontend).
* Collaborate with product owners, architects, and fellow engineers to refine requirements and deliver high-quality solutions.
* Contribute to the development of modular, secure, and scalable APIs and services.
* Implement intuitive and responsive user interfaces that enhance customer and internal user experiences.
* Participate in Agile ceremonies and support continuous delivery practices.
* Ensure code quality through reviews, testing, and adherence to best practices.
* Help shape architectural decisions and technical direction across ongoing and greenfield projects.
* Strong professional experience as a Full-Stack Developer using Java (Spring ecosystem preferred) and React.
* Solid understanding of modern software engineering practices, including CI/CD, automated testing, and microservices.
* Experience working in complex, enterprise-grade environments—ideally within financial services or other regulated industries.
* Ability to translate functional requirements into clean, maintainable, and performant code.
* Comfortable working within Agile teams and collaborating closely with both technical and non-technical stakeholders.
* Strong problem-solving skills and a proactive, ownership-driven mindset.
* Fluent in English; French or Dutch is an advantage.
Why Join?
This is an opportunity to play a key role in impactful, business-critical engineering initiatives within a major financial organisation. You’ll work in a dynamic, collaborative environment, contribute to both new and ongoing projects, and help deliver secure, performant applications that support the company’s digital strategy for years to come.
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