Lead AI Engineer - Generative AI

About the role

Devoteam, an AI-driven tech consulting firm, is hiring a Lead AI Engineer in Luxembourg. You will lead Generative AI missions for clients end-to-end, from proof of concept to production, acting as the technical reference on autonomous agents, LLM deployment and cost-efficient GenAI architectures.

Key responsibilities

• Design and lead autonomous AI agents, multi-agent orchestration (LangGraph, CrewAI) and RAG pipelines with complex API integrations.
• Define hybrid LLM deployment strategies across managed cloud AI services (Azure OpenAI, AWS Bedrock, GCP Vertex AI) and open-weight models (Llama, Mistral) served on GPU infrastructure via vLLM or TGI.
• Design observability for GenAI applications (quality, latency, hallucination detection) using tools such as LangSmith, Arize or Prometheus/Grafana.
• Control costs across client AI projects through token management, prompt routing, caching and GPU resource optimization.
• Standardize containerization (Docker, Kubernetes) with client teams, mentor delivery engineers and communicate the technical vision to client stakeholders.

Required profile

• 5+ years of professional experience, including hands-on delivery of GenAI/LLM projects in production.
• Fluency in both French and English is mandatory.
• Comfortable framing client needs and leading technical design on client-facing missions.

Required skills

• Agentic workflows and RAG pipelines (LangChain, LlamaIndex, LangGraph or equivalent).
• Deployment of open-source models (Llama, Mistral) on GPU infrastructure.
• LLMOps, model evaluation and GenAI monitoring tools.
• Vector databases (Qdrant, Pinecone, Milvus or equivalent) and Docker/Kubernetes.

Nice to have: Databricks, MLOps, cloud AI certifications, open-source contributions. The company offers continuous growth through training, certifications and mentoring.