Lead AI Engineer

Devoteam is an AI-driven tech consulting firm specializing in cloud platforms, cybersecurity, data solutions, and sustainability. With nearly 30 years of tech-native expertise, we guide businesses through sustainable digital transformations to deliver tangible value.

Present in over 25 countries across Europe, the Middle East, and Africa, and powered by over 11,500 collaborators, Devoteam is committed to leveraging technology to serve people.

In Luxembourg, part of aregional Benelux entity, we are a strong workforce of almost 150 professionals, including an Innovative Tech Department: a focused group of around 40 specialists in cutting-edge technologies. Embracing a vendor-agnostic approach, this team cultivates deep expertise across diverse cloud providers, open-source technologies, and other innovative tools, enabling us to craft tailored solutions that best fit our clients' needs.

As a Lead AI Engineer, you will lead Generative AI missions for our 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.

Here's what that looks like in practice: an empty repo, a client's business need, and a couple of weeks to prove the idea holds. You build the POC yourself, the client is convinced - now hundreds of their employees want it on their desk every morning. You add single sign-on and roles, quotas so nobody drains the budget in an afternoon, an evaluation harness that flags quality drift, and pipelines that ship new versions without waking anyone up. Same person, same architecture, from first prototype to the service the client relies on.

Your key responsibilities

• AI Engineering & Agentic Workflows: design and lead the implementation of autonomous AI agents, multi-agent orchestration (LangGraph, CrewAI), and RAG pipelines with complex API integrations, on client missions;
• Hybrid LLM Deployment: define 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;
• LLMOps, Monitoring & Evaluation: design observability for GenAI applications - quality, latency, hallucination detection - using tools such as LangSmith, Arize, or Prometheus/Grafana;
• AI FinOps: control cost across client AI projects through token management, prompt routing, caching, and GPU resource optimization;
• Technical Leadership: standardize containerization (Docker, Kubernetes) with client teams, mentor delivery engineers, and communicate the technical vision to client stakeholders.

What we're looking for

Must-have:

• 5+ years of overall professional experience, including hands-on delivery of GenAI/LLM projects in production;
• Deep expertise building agentic workflows and RAG pipelines (LangChain, LlamaIndex, LangGraph, or equivalent);
• Strong practical experience deploying and serving open-source models (Llama, Mistral) on GPU-accelerated infrastructure;
• Solid understanding of LLMOps practices, model evaluation, and GenAI monitoring tools;
• Good working knowledge of vector databases (Qdrant, Pinecone, Milvus, or equivalent) and Docker/Kubernetes;
• Comfortable framing client needs directly and leading technical design on client-facing missions;
• Fluency in both French and English is mandatory.

Softskills: Advisory Mindset | Consultative Communication | Curiosity | Rigor | Business-Oriented

Nice-to-have:

• Prior exposure to modern data platforms, particularly Databricks, and general data engineering pipelines;
• Practical knowledge of DevOps/CI-CD methodologies applied to ML (MLOps);
• Experience with native AI/ML services across major cloud platforms (Azure, GCP, AWS);
• Cloud AI certifications (e.g., Azure AI Engineer Associate, AWS Certified Machine Learning - Specialty, GCP Professional ML Engineer);
• A track record of contributing to open-source AI projects or leading technical communities.

Life at Devoteam

Join a community where technology meets humanity; we believe that a job should be more than just a to-do list, it should be a place where you grow, connect, and make an impact; with us, you will find:

• A playground for innovation: you will work with the latest GenAI stack to build future-proof solutions for our clients; this is your chance to stay ahead of the curve;
• A culture of connection: we are 140+ tech enthusiasts from 27+ countries and 900+ from Benelux; we don't just work together, we celebrate diversity and win together;
• Continuous growth: between our Training Center, certifications, and mentoring, we take your development seriously; your ambition sets the pace;
• Meaningful impact: through the Devoteam Foundation, your skills can serve social causes and sustainability initiatives.

Who thrives here?

We are looking for problem-solvers who turn challenges into elegant solutions and curious minds who never stop learning; if you love combining deep technical work with human interaction, you will fit right in.

If you do not feel fully confident that you meet the requirements above, please don't worry. Just apply. Together we'll discover what you can bring to the table, in which role you would fit best and how you could potentially grow at Devoteam.

Devoteam stands for equal opportunities. We are convinced that diversity contributes to the creativity, dynamism and excellence of our organization. All our positions are open to people with disabilities.