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. Role Summary As a Research Engineer on the software side, you will design and harden the codebase, tools and distributed services that let our scientists train and ship frontier-scale models. You do not need prior ML experience; what matters is writing clean, reliable code that scales. You will join our Research Software Engineering team to build and maintain shared dev-tools, evaluation & data pipelines, training framework, cluster tooling and CI/CD. Location: Paris / Warsaw / Zurich / London (hybrid) or remote EU/UK with one hub visit per month. What will you do Accelerate researchers by owning the complex parts of large-scale pipelines and delivering robust internal tooling. Interface research with product: expose clean APIs, automate model pushes, surface live metrics. Write efficient, well-tested Python and systems code; enforce code review, CI, and observability. Design and optimise distributed services (Kubernetes / SLURM, thousands-of-GPU jobs). Prototype utilities (CLI, dashboards) and carry them through to stable, shared libraries. About the Research Engineering team Based in Paris and London, our REs move fluidly along the research and production spectrum. Engineers can rotate between Platform and Embedded tracks as their interests evolve. About you Master's in Computer Science (or equivalent experience). 4 + years building and operating large-scale or distributed systems. Strong software-design instincts: modular code, tests, CI/CD, observability. Fluency in Python plus one systems language (C++, Rust, Go or Java). Hands-on with container orchestration and schedulers (Kubernetes / K8s, SLURM, or similar). Comfortable profiling performance, optimising I/O, and automating workflows. Self-starter, low-ego, collaborative, high-energy. Nice-to-haves Exposure to ML workloads or data-processing pipelines. Experience with GPU clusters or CUDA. Open-source contributions or widely used internal tools. Location and Remote This role is primarily based at one of our European offices (Paris, Warsaw, Zurich and London). We will prioritize candidates who either reside there or are open to relocating. We strongly believe in the value of in-person collaboration to foster strong relationships and seamless communication within our team. In certain specific situations, we will also consider remote candidates based in one of the countries listed in this job posting - currently France & UK. In that case, we ask all new hires to visit our local office: for the first week of their onboarding (accommodation and travelling covered) then at least 3 days per month What We Offer We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page. Privacy Policy Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
14/07/2026
Full time
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. Role Summary As a Research Engineer on the software side, you will design and harden the codebase, tools and distributed services that let our scientists train and ship frontier-scale models. You do not need prior ML experience; what matters is writing clean, reliable code that scales. You will join our Research Software Engineering team to build and maintain shared dev-tools, evaluation & data pipelines, training framework, cluster tooling and CI/CD. Location: Paris / Warsaw / Zurich / London (hybrid) or remote EU/UK with one hub visit per month. What will you do Accelerate researchers by owning the complex parts of large-scale pipelines and delivering robust internal tooling. Interface research with product: expose clean APIs, automate model pushes, surface live metrics. Write efficient, well-tested Python and systems code; enforce code review, CI, and observability. Design and optimise distributed services (Kubernetes / SLURM, thousands-of-GPU jobs). Prototype utilities (CLI, dashboards) and carry them through to stable, shared libraries. About the Research Engineering team Based in Paris and London, our REs move fluidly along the research and production spectrum. Engineers can rotate between Platform and Embedded tracks as their interests evolve. About you Master's in Computer Science (or equivalent experience). 4 + years building and operating large-scale or distributed systems. Strong software-design instincts: modular code, tests, CI/CD, observability. Fluency in Python plus one systems language (C++, Rust, Go or Java). Hands-on with container orchestration and schedulers (Kubernetes / K8s, SLURM, or similar). Comfortable profiling performance, optimising I/O, and automating workflows. Self-starter, low-ego, collaborative, high-energy. Nice-to-haves Exposure to ML workloads or data-processing pipelines. Experience with GPU clusters or CUDA. Open-source contributions or widely used internal tools. Location and Remote This role is primarily based at one of our European offices (Paris, Warsaw, Zurich and London). We will prioritize candidates who either reside there or are open to relocating. We strongly believe in the value of in-person collaboration to foster strong relationships and seamless communication within our team. In certain specific situations, we will also consider remote candidates based in one of the countries listed in this job posting - currently France & UK. In that case, we ask all new hires to visit our local office: for the first week of their onboarding (accommodation and travelling covered) then at least 3 days per month What We Offer We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page. Privacy Policy Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
Mistral AI is hiring a Research Engineer to design and harden the software stack that underpins frontier-scale AI models. You'll build, maintain and optimize shared dev-tools, data pipelines, and training frameworks for an expert research team. Based in Europe with a London hub and EU/UK remote options, this hybrid role emphasizes clean code, robust tooling, and scalable systems performance for large GPU workloads.
14/07/2026
Full time
Mistral AI is hiring a Research Engineer to design and harden the software stack that underpins frontier-scale AI models. You'll build, maintain and optimize shared dev-tools, data pipelines, and training frameworks for an expert research team. Based in Europe with a London hub and EU/UK remote options, this hybrid role emphasizes clean code, robust tooling, and scalable systems performance for large GPU workloads.
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 As a Model Behaviour Architect on the General Agents team, you will define and measure how large language models interact with tools, invoke functions, and orchestrate complex workflows. This role exists to ensure our models excel at accurate, reliable, and intelligent tool use, from precise parameter selection to multi-step orchestration and error recovery. You will collaborate closely with our Science team to shape what "good" looks like for function calling, turning research insights into best-in-class model behaviour. Your work will directly impact the capabilities of Mistral's models, enabling them to solve real-world problems with greater autonomy and precision. What You Will Do Interact with models to identify opportunities for improving function calling and tool use behaviour. Gather internal and external feedback to scope and prioritise areas for enhancement. Design and implement evaluations, data guidelines, and synthetic tool environments and APIs. Address edge cases such as malformed arguments, hallucinated functions, and incorrect tool selection through rigorous testing. Develop robust evaluation pipelines to assess the function-calling capabilities of model candidates. Collaborate with AI Scientists to align model behaviour with research insights and real-world needs. What We're Looking For Deep understanding of API design, structured outputs, and schema specification (e.g., JSON Schema), or expertise in engineering and code behaviour, or experience with LLM agents, including reasoning, planning, and multi-step tool use. Prior knowledge in training and optimising model behaviour for real-world applications. Expertise in building robust, scalable evaluation frameworks for AI systems. Ability to thrive in dynamic, technically complex environments and deliver innovative solutions. Track record of solving open-ended challenges with creative, out-of-the-box approaches. What We Offer We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page. Privacy Policy Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
14/07/2026
Full time
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 As a Model Behaviour Architect on the General Agents team, you will define and measure how large language models interact with tools, invoke functions, and orchestrate complex workflows. This role exists to ensure our models excel at accurate, reliable, and intelligent tool use, from precise parameter selection to multi-step orchestration and error recovery. You will collaborate closely with our Science team to shape what "good" looks like for function calling, turning research insights into best-in-class model behaviour. Your work will directly impact the capabilities of Mistral's models, enabling them to solve real-world problems with greater autonomy and precision. What You Will Do Interact with models to identify opportunities for improving function calling and tool use behaviour. Gather internal and external feedback to scope and prioritise areas for enhancement. Design and implement evaluations, data guidelines, and synthetic tool environments and APIs. Address edge cases such as malformed arguments, hallucinated functions, and incorrect tool selection through rigorous testing. Develop robust evaluation pipelines to assess the function-calling capabilities of model candidates. Collaborate with AI Scientists to align model behaviour with research insights and real-world needs. What We're Looking For Deep understanding of API design, structured outputs, and schema specification (e.g., JSON Schema), or expertise in engineering and code behaviour, or experience with LLM agents, including reasoning, planning, and multi-step tool use. Prior knowledge in training and optimising model behaviour for real-world applications. Expertise in building robust, scalable evaluation frameworks for AI systems. Ability to thrive in dynamic, technically complex environments and deliver innovative solutions. Track record of solving open-ended challenges with creative, out-of-the-box approaches. What We Offer We offer a comprehensive benefits package designed to support your well-being, growth, and work-life balance. Benefits vary by country and may include healthcare coverage, parental leave, retirement plans, relocation support, wellness programs, meal and transportation allowances, and other location-specific perks. For the most up-to-date details on benefits available in your location, please refer to our Benefits page. Privacy Policy Your privacy matters to us. You can learn more about how we handle your personal data in our Applicant Privacy Policy.
Mistral AI is seeking a Model Behaviour Architect to shape how large language models interact with tools, invoke functions, and orchestrate workflows on the General Agents team. You will translate research into best-in-class model behaviour, driving precise parameter selection and robust multi-step orchestration. You will collaborate with the Science team to define what good tool use looks like and to deliver reliable, autonomous model capabilities across real-world scenarios.
14/07/2026
Full time
Mistral AI is seeking a Model Behaviour Architect to shape how large language models interact with tools, invoke functions, and orchestrate workflows on the General Agents team. You will translate research into best-in-class model behaviour, driving precise parameter selection and robust multi-step orchestration. You will collaborate with the Science team to define what good tool use looks like and to deliver reliable, autonomous model capabilities across real-world scenarios.