A major Belgian financial institution is expanding its Channels and Customer Experience tribe to strengthen the digital solutions for enterprise clients. This medior IT Developer BTT role will work in Agile squads on end-to-end features for web and mobile products, with an emphasis on the internal BTT framework and Test Driven Development practices to ensure maintainable backend services.
The mission
The team owns the product lifecycle for the enterprise digital channel, delivering backend services that connect mobile and web frontends to internal APIs and external data sources. Work involves feature development, API automation testing, and integrating services into CI/CD pipelines so the platform remains performant and resilient for business customers.
On a typical day you will translate product requirements into well-tested code, implement API automation tests as part of development, and contribute to CI/CD and Ops tasks that keep deployments stable. You will collaborate with product owners, frontend engineers and QA in a cross-functional squad, applying OO principles, DDD and SOLID design patterns to evolve the codebase during a multi-sprint roadmap.
Your responsibilities
- Translate requirements into high-quality, maintainable backend code that integrates with the BTT framework and downstream APIs
- Design and deliver API automation testing suites that run in CI/CD, reducing manual regression and increasing deployment confidence
- Implement and maintain CI/CD pipelines and deployment automation to improve release frequency and rollback safety
- Refactor and evolve the codebase using DDD, design patterns and SOLID principles to reduce technical debt and improve readability
- Collaborate in pair programming and code reviews, sharing practices that raise squad-wide development standards
- Troubleshoot production incidents and implement durable fixes, contributing to on-call or operational activities when required
Your profile
Essential skills
- Minimum 5 years of professional software development experience, ideally in back-end services
- Proven practical experience with the BTT internal framework
- Strong working knowledge of Test Driven Development (TDD) and writing automated API tests
- Experience operating and creating CI/CD pipelines and release automation
- Solid understanding of OO principles, DDD, design patterns and SOLID principles
- Comfortable pairing with colleagues and working in cross-functional Agile squads
Preferred skills
- Practical experience with Java and Spring is an advantage
- Prior exposure to Scrum and Agile delivery practices
Languages
- English, B2
- French, B1 (advantage)
- Dutch, B1 (advantage)
Education
- Bachelor or Master degree in computer science or equivalent professional experience
This position is a medior IT Developer BTT role focusing on backend development, API automation testing and CI/CD improvements within an Agile enterprise channels tribe.