# Applied Scientist - Research Engineer (Optimisation), EMEA at Mistral AI - Company: Mistral AI - Status: Open - Workplace: On-site - Location: Paris · Amsterdam · London · Lausanne - Level: Senior - Discipline: AI & ML - Employment: Full-time - Posted: 2026-11-04 - Skills: AI, Optimisation - Apply: https://jobs.ashbyhq.com/mistral.ai/2ad44b54-079c-4ce6-8176-7d733a2b364a ## Description ABOUT MISTRAL Mistral provides full-stack AI solutions: from frontier models to developer tools, applications, and compute. We partner with enterprises tackling the hardest problems across high-stakes industries like finance, manufacturing, defense, healthcare, and the public sector, co-creating customized AI systems that they can run on their terms. We are a dynamic, collaborative team passionate about AI and its potential to transform society. Our diverse workforce thrives in competitive environments and is committed to driving innovation. Our teams are distributed between Europe, North America, Asia and the Middle East. We are creative, low-ego and team-spirited. THE ROLE Mistral AI is seeking Applied Scientists and Research Engineers focused on optimisation and operational research. You will post-train SOTA large language models to formulate and solve optimisation problems, and apply them to diverse use cases. Working cross-functionally with both external and internal science, engineering, and product teams you will deliver high-impact AI solutions. We are made of researchers, engineers, product builders, ex-founders who love tackling the most complex real world problems in the industry. WHAT YOU WILL DO - Run pre-training, post-training and deploy state of the art models on clusters with thousands of GPUs. - Generate and curate datasets for optimisation modelling (LP, MILP, constraint programming, scheduling, routing), and build evaluators and benchmarks for operational research tasks. - Use solvers as verifiers to build reward signals for reinforceme More Mistral AI roles: https://deviantjobs.com/companies/mistral-ai