Position Title:Senior Python Developer – LLM-oriented and backend development Location:Anderlecht, Belgium Duration:6 Months with possible extension Languages:English Work Modality:Hybrid Start Date:October 1st, 2025 End Date:March 31st, 2026 (renewable) Context - Team: AI Engineering Team within internal IT - Team size: ~10 people (internal and external), including 2 externals dedicated to the project Typical Day - Development of Python-based agents integrating language models (LLMs) - Collaboration with the Microsoft Copilot Studio team - Building backend applications (FastAPI or equivalent) - Interaction with business experts to understand needs and data - Short projects (~2 months), often in parallel, requiring agility and autonomy Years of Experience - Minimum 8 years of experience in software development Must Have - Strong Python skills - Experience with FastAPI or similar frameworks (Flask, etc.) - Knowledge of LLM concepts: RAG, grounding, context engineering - Ability to code reliable and maintainable backend applications - Experience in data-oriented projects (data analytics or data science) - Fluent English Ideal Candidate - Python developer with strong data science sensitivity - Able to understand business challenges and communicate with experts - Comfortable in dynamic environments and short-term projects - Experience in API development and LLM integration Nice to Have - Experience in the pharmaceutical sector (not mandatory) - Knowledge of Azure OpenAI - Experience with xg., Sky, Jarvis) Language Requirements - English only Homeworking Policy - Hybrid: 2 days per week onsite (HQ), with flexibility depending on the profile