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# Senior Software & Data Engineer

- **Company:** Merlin
- **Location:** Brussel, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Microsoft Azure, Cloud Computing, Continuous Integration, Data Infrastructure, Github, Python (Programming Language), Software Deployment, Software Engineering, TypeScript, ReactJS, Large Language Models, Generative AI, Backend, Vue.js, Build Management, Front End Software Development, Api Design
- **Published:** September 3, 2026
- **Apply:** https://www.adzuna.be/details/5867414165

## About the Role

* Solid software engineering experience, with real depth on the backend
 * Experience owning architecture end to end and taking systems into production
 * Hands-on experience building or substantially working on a layered data platform (bronze/silver/gold)
 * Cloud experience: Azure is ideal, AWS or GCP transfers fine
 * Comfortable and credible in front of clients - you can convince a technical stakeholder you know what you're doing, and back it up
 * 4+ years of experience
 * Based in Belgium (or willing to relocate before joining) and legally authorized to work in Belgium.
 * Fluent English

Strong pluses:

 * You took a GenAI project to production (an agent or a RAG system), running for real users
 * Experience leading or mentoring a team of engineers
 * Python, and API design at scale
 * Some frontend ability (TypeScript with React or Vue), enough to be dangerous, not necessarily a specialist
 * CI/CD and containerised deployment; Azure DevOps or GitHub Actions
 * Dutch or French

## Description

As our Senior Software & Data engineer, you'll take broad technical ownership across the full software development lifecycle, from architecture and hands-on development through deployment, monitoring and scaling.

What you'll do

 * Act as the technical partner to the client: translate business problems into solutions, shape scope, explain trade-offs
 * Own the architecture on client engagements: design the solution, then defend and refine it with the client's IT and security teams
 * Hands-on backend development through to production deployment
 * Design and build the data platform underneath: layered bronze/silver/gold architecture and reliable pipeline
 * Architect and integrate GenAI capabilities (LLM APIs, RAG, agentic components) into production applications with the engineering team
 * Help shape how Merlin builds, the standards, tooling and technology choices we adopt, and grow the engineers around you


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