Software Engineer

Senior AI Engineer

Work Model : 1 day a week on site in Ghent

Contract Length : 12-24months to perm

Workload : 40 hours a week

Start Date : ASAP

About the Role

We are looking for a Senior AI Engineer to develop production-ready AI systems that power software products in the biopharma industry. This is a hands-on role where you will design, implement, and maintain AI-driven features leveraging large language models, agent orchestration frameworks, and retrieval-augmented generation (RAG) architectures.

As part of an agile engineering team, you will write code daily - building sophisticated agentic workflows and ensuring they perform reliably in production. You’ll take ownership of the entire AI system lifecycle, from design and implementation to validation and deployment, translating complex domain requirements into robust technical solutions.

You’ll primarily work across LLMs, agent orchestration, and RAG implementation - leveraging providers like OpenAI, frameworks such as LangGraph, and retrieval stacks (e.g., Elasticsearch with ClickHouse). You will containerize with Docker and deploy to on-premise or cloud systems (Azure / AWS).

The role follows a hybrid work model with one day per week on-site and the remainder flexible.

Key Responsibilities

• Design & implement deterministic, stateful agent workflows with RAG (multi-step reasoning, tool-use, retries / fallbacks, human-in-the-loop).
• Engineer retrieval pipelines (chunking, embeddings, re-ranking, hybrid search) and query rewriting to boost performance.
• Drive LLMOps : tracing, evaluation, observability, CI / CD.
• Lead quality assurance : unit / integration / e2e tests for agent flows.
• Document architectures and patterns; mentor peers; stay current with LLM providers and agent methodologiess.

Requirements

Nice to Haves