Web Application Engineer (m/f/d)
Contract
Brussels, Belgium
28.04.2026
A large organisation is strengthening its application development team to support the delivery and evolution of business‑critical web and mobile solutions.
The role sits within a collaborative IT environment, working closely with architects, analysts and delivery teams, and contributes to the design, development and maintenance of modern applications aligned with internal standards and governance.
Responsibilities:
Qualifications and Skills:
· 3 to 5 years of experience developing applications on a low‑code platform
· Strong background in web and mobile application development
· Solid experience with REST API integrations and data exchange
· Familiarity with CI/CD, DevOps practices, performance optimisation and security
· Experience with automated testing frameworks and exception handling
· Knowledge of application migration projects is a plus
· Comfortable working in Agile / Scrum environments
· Fluency in English is required; knowledge of an additional European language is an asset
Halian Group
With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers.
Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together.
At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve.
The role sits within a collaborative IT environment, working closely with architects, analysts and delivery teams, and contributes to the design, development and maintenance of modern applications aligned with internal standards and governance.
Responsibilities:
- Design, develop and maintain web and mobile applications on a low‑code platform
- Implement business logic, workflows and integrations with enterprise systems via REST APIs
- Build responsive, user‑friendly interfaces in line with UI/UX standards
- Ensure code quality through automated unit tests and shift‑left testing practices
- Contribute to CI/CD pipelines, release management and application lifecycle activities
- Troubleshoot, optimise performance and handle incident resolution
- Participate in Agile ceremonies and collaborate with cross‑functional delivery teams
- Produce technical documentation and support knowledge transfer
Qualifications and Skills:
· 3 to 5 years of experience developing applications on a low‑code platform
· Strong background in web and mobile application development
· Solid experience with REST API integrations and data exchange
· Familiarity with CI/CD, DevOps practices, performance optimisation and security
· Experience with automated testing frameworks and exception handling
· Knowledge of application migration projects is a plus
· Comfortable working in Agile / Scrum environments
· Fluency in English is required; knowledge of an additional European language is an asset
Halian Group
With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers.
Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together.
At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve.