Senior AI / ML Engineer – RAG & Azure OpenAI
Brussels-Capital
Digital - Development
Bachelor, Master
Work experience: 5-7
Reference number: 93181

Our client is delivering an AI-driven MVP focused on intelligent document processing and retrieval-based question answering. The Senior AI / ML Engineer is responsible for implementing the full technical stack required for this MVP, covering data ingestion, processing pipelines, embeddings, and retrieval-augmented generation, in close collaboration with an AI Architect.

The role is highly execution-oriented, with a strong emphasis on production-ready AI components, performance, and integration within an enterprise cloud environment.

Responsibilities:
  • Design and implement end-to-end data pipelines for document ingestion, parsing, metadata generation, and structured storage.
  • Build and optimize embeddings, RAG indexes, search logic, and response generation mechanisms.
  • Integrate AI components with Azure OpenAI, internal databases, and backend APIs.
  • Develop and maintain backend services supporting AI and ML workflows.
  • Collaborate closely with the AI Architect to align implementation with the overall solution architecture.
  • Ensure code quality through testing, documentation, reviews, and performance optimization.
  • Support integrated testing, validation, and MVP stabilization activities.

What are we looking for?

  • You have 7+ years of experience in backend or AI/ML engineering roles.
  • You bring strong proficiency in C# and .NET for data processing and backend development.
  • You have hands-on experience designing and implementing RAG pipelines and embeddings-based retrieval.
  • You possess deep practical experience with Azure OpenAI or comparable cloud-based AI services.
  • You have solid knowledge of data extraction, document processing, and scalable pipeline architectures.
  • You bring experience integrating AI components into production-grade systems.
  • You are fluent in French or Dutch and have a good professional level of the other language.
Nice to Haves
  • Experience with additional backend technologies such as PHP or JavaScript.
  • Exposure to DevOps, CI/CD pipelines, or cloud engineering practices.
  • Experience delivering AI-driven MVPs in Agile environments.
  • Relevant technical certifications in Azure, .NET, or AI/ML.

What do we offer?

  • Work regime: cloudy with a chance of veggie meatballs 
  • Location: Brussels
  • Working model: Hybrid (minimum 2 days onsite)
  • Duration: ASAP - Aug 2026
  • Contract: open to both permanent employees and freelancers

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