You will be responsible for the technical vision and implementation of the AI algorithms that enable the copilot to understand, reason, and reliably answer users’ business-related questions.You will work hand-in-hand with the other tech leads and product leads to define and execute the product’s overall technical strategy.Define and drive the AI strategy: design the technical roadmap around RAG, semantic search, language models (LLMs), agent orchestration (LangGraph, etc.), and answer quality.Lead and grow the team (MLEs, data scientists, data engineers): pair programming, code reviews, mentoring, hiring, and establishing best practices.Design and industrialize AI pipelines: ingestion, vectorization, indexing, fine-tuning, evaluation, and model monitoring.Strong understanding of LLM behavior, prompt-engineering techniques, and strategies for orchestrating multi-step AI agentsAbility to connect AI agents with external tools, APIs, databases, and automation platforms to enable end-to-end workflow executionExperience designing and implementing agentic workflows, including task decomposition, tool integration, and autonomous decision-making logic.Proficiency in monitoring, evaluating, and optimizing agent performance, including error handling, memory management, and iterative refinement.Ensure the robustness and scalability of AI components, working closely with the platform/backend team.Collaborate with Product team across squads to turn business requirements into effective technical solutions.Conduct continuous technology watch: stay at the forefront of RAG, LLMOps, evaluation frameworks, agents, and multimodality.What we expect from you:You can switch easily between strategic and hands-on work: architect an AI system one day, and optimize a pipeline or model the next.You know how to balance delivery speed with technical quality.You can communicate clearly with both technical and non-technical stakeholders.You drive the adoption of best practices (testing, CI/CD, documentation, monitoring).You foster a strong culture of collaboration and feedback.You are comfortable in an agile environment (Scrum, squads, sprints, rituals).Required experience:Solid experience (5+ years) in Machine Learning / NLP / LLMs, including significant work on production-grade projects.Strong command of RAG & LLMOps concepts and tools: vector DBs, retrievers, embeddings, evaluation, LangChain/LangGraph, agent orchestration, etc.Excellent knowledge of ML frameworks: PyTorch, Transformers, Hugging Face, etc.Strong Python skills and good understanding of backend/data architectures (FastAPI, Airflow, Spark, etc.).Experience deploying models to production, ML CI/CD, monitoring, and performance.Technical leadership abilities: mentoring, code reviews, spreading best practices, cross-squad coordination.Curiosity, pragmatism, and a passion for real-world innovation.What you’ll love about working at Descartes & Mauss: Work from home (or wherever you perform best) up to 3 days per week Wednesdays & Thursdays at our WeWork Paris 9ᵉ office (dog-friendly 🐶) Access to WeWork offices worldwide Full-remote periods during summer and year-end holidays 18 + nationalities and balanced gender representation 3 company-wide workshops per year + an annual offsite (last one: Tuscany 2024 🇮🇹) 50 % Navigo reimbursement Swile card – €16/day, 55 % covered 25 days off + RTT + your birthday off 🎉 Buddy program for newcomers Continuous training & mentorship from experienced peers Recruitment process: 30 min chat with HR 30 min chat with the hiring manager Case study Office tour & team meeting (if Paris-based) D&M celebrates diversity and inclusion. If you’re excited about this role but don’t meet every single requirement, we still encourage you to apply - you might be exactly who we need. D&M believes diversity drives innovation and is committed to creating an inclusive environment for all employees. We welcome candidates of all backgrounds, genders, and abilities to apply. Even if you don’t meet every requirement, if you’re excited about the role, we encourage you to go for it—you could be exactly who we need to help us create something amazing together!
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