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Pauwels Consulting
Senior AI / ML Engineer – RAG & Azure OpenAI

Senior AI / ML Engineer – RAG & Azure OpenAI

On site

Brussels, Belgium

Senior

Freelance

04-02-2026

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Skills

JavaScript C# PHP CI/CD DevOps Architecture Solution Architecture Databases Azure Agile .NET OpenAI CI/CD Pipelines

Job Specifications

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

About the Company

Pauwels Consulting is a Belgian consultancy firm with more than 1500 experts in engineering, life sciences and IT. We staff, manage and execute projects for leading organizations in Belgium, France, The Netherlands and beyond. Experts in Engineering, Life Sciences and IT Our Engineering team helps organizations in the (petro)chemical, civil engineering, industrial production, energy and transport businesses with the design, supervision, support and execution of long-term projects. We are particularly active in the fields o... Know more