Mistral AI
About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code and Mistral Compute - a suite that brings frontier intelligence to end users. 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 France, USA, UK, Germany and Singapore. We are creative, low ego and team spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on Mistral AI participates in the E-Verify program By applying, you agree to our Applicant Privacy Policy. Role Summary Research Engineer, Data Infrastructure The Data Infrastructure team at Mistral AI is architecting the backbone of our frontier model training and fine tuning ecosystem. We are building the specialized compute and data fabrics required to power the development of world class AI. Our vision is to operate some of the largest compute fleets in production and build data lakes and metadata systems with a roadmap toward exabyte scale architecture. We are currently in the process of building a high performance training platform designed for massive scale across both on premise and cloud native Kubernetes environments. We are leading a strategic transition from legacy scheduling to modern orchestration. With numerous clusters distributed across various regions, we are focussed on implementing sophisticated multi cluster orchestration and cloud bursting capabilities to better utilize our global resources and ensure our researchers have seamless access to compute wherever it resides. Our mission is to evolve our current systems into a platform that is as durable as it is flexible. Location: Paris / London (hybrid) or remote EU/UK with one hub day per month. About the Role This role focuses on building and operating the next generation of data infrastructure at Mistral AI. You will be a core contributor to our evolution, helping us design and scale massive compute fleets and storage systems designed for high performance and scalability. You will help us move toward a future of decoupled control and data planes, scaling big data compute and storage platforms while ensuring secure and governed data access for MLOps and research. You will take full lifecycle ownership: from architecting the migration away from legacy orchestrators to implementing production grade pipelines and participating in on call rotations for critical training jobs. In this role, you will: Build & Scale: Help us reach our goal of operating massive distributed compute and storage systems Global Orchestration: Architect and maintain multi cluster orchestration layers to optimize workload placement across diverse hardware and regions. Design Future Proof Storage: Architect our transition to modern storage formats to handle fine tuning datasets at a scale that anticipates exabyte growth. Platform Engineering: Contribute to the development of our internal training platform, ensuring seamless model training and fine tuning capabilities across Kubernetes and SLURM based environments. Metadata & Lineage: Implement and manage systems to provide clear visibility and lineage as our data and model pipelines grow in complexity. Operational Excellence: Use modern deployment workflows to manage cloud native deployments, ensuring our data platform can scale by orders of magnitude while remaining reliable and efficient. You might thrive in this role if you: Have 4+ years of experience in Data Infrastructure, MLOps, or Infrastructure Engineering. Have experience or a strong interest in supporting foundational compute and storage platforms. Are proficient in Python and enjoy solving the "brittle data lake" problem with modern, columnar storage standards. Are well versed in Kubernetes native tooling and excited to debug large scale distributed systems across multi cluster environments. Take pride in building and operating scalable, reliable, and secure systems from the ground up. Are comfortable with ambiguity and the challenges of building high scale infrastructure in a rapid growth AI environment. Benefits France Competitive cash salary and equity Food: Daily lunch vouchers Sport: Monthly contribution to a Gympass subscription Transportation: Monthly contribution to a mobility pass Health: Full health insurance for you and your family Parental: Generous parental leave policy Visa sponsorship UK Competitive cash salary and equity Insurance Transportation: Reimburse office parking charges, or £90 per month for public transport Sport: £90 per month reimbursement for gym membership Meal voucher: £200 monthly allowance for meals Pension plan: SmartPension (percentages are 5% Employee & 3% Employer) By applying, you agree to our Applicant Privacy Policy.
About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high-performance, optimized, open-source and cutting edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise as well as personal needs. Our offerings include Le Chat, La Plateforme, Mistral Code and Mistral Compute - a suite that brings frontier intelligence to end users. 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 France, USA, UK, Germany and Singapore. We are creative, low ego and team spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on Mistral AI participates in the E-Verify program By applying, you agree to our Applicant Privacy Policy. Role Summary Research Engineer, Data Infrastructure The Data Infrastructure team at Mistral AI is architecting the backbone of our frontier model training and fine tuning ecosystem. We are building the specialized compute and data fabrics required to power the development of world class AI. Our vision is to operate some of the largest compute fleets in production and build data lakes and metadata systems with a roadmap toward exabyte scale architecture. We are currently in the process of building a high performance training platform designed for massive scale across both on premise and cloud native Kubernetes environments. We are leading a strategic transition from legacy scheduling to modern orchestration. With numerous clusters distributed across various regions, we are focussed on implementing sophisticated multi cluster orchestration and cloud bursting capabilities to better utilize our global resources and ensure our researchers have seamless access to compute wherever it resides. Our mission is to evolve our current systems into a platform that is as durable as it is flexible. Location: Paris / London (hybrid) or remote EU/UK with one hub day per month. About the Role This role focuses on building and operating the next generation of data infrastructure at Mistral AI. You will be a core contributor to our evolution, helping us design and scale massive compute fleets and storage systems designed for high performance and scalability. You will help us move toward a future of decoupled control and data planes, scaling big data compute and storage platforms while ensuring secure and governed data access for MLOps and research. You will take full lifecycle ownership: from architecting the migration away from legacy orchestrators to implementing production grade pipelines and participating in on call rotations for critical training jobs. In this role, you will: Build & Scale: Help us reach our goal of operating massive distributed compute and storage systems Global Orchestration: Architect and maintain multi cluster orchestration layers to optimize workload placement across diverse hardware and regions. Design Future Proof Storage: Architect our transition to modern storage formats to handle fine tuning datasets at a scale that anticipates exabyte growth. Platform Engineering: Contribute to the development of our internal training platform, ensuring seamless model training and fine tuning capabilities across Kubernetes and SLURM based environments. Metadata & Lineage: Implement and manage systems to provide clear visibility and lineage as our data and model pipelines grow in complexity. Operational Excellence: Use modern deployment workflows to manage cloud native deployments, ensuring our data platform can scale by orders of magnitude while remaining reliable and efficient. You might thrive in this role if you: Have 4+ years of experience in Data Infrastructure, MLOps, or Infrastructure Engineering. Have experience or a strong interest in supporting foundational compute and storage platforms. Are proficient in Python and enjoy solving the "brittle data lake" problem with modern, columnar storage standards. Are well versed in Kubernetes native tooling and excited to debug large scale distributed systems across multi cluster environments. Take pride in building and operating scalable, reliable, and secure systems from the ground up. Are comfortable with ambiguity and the challenges of building high scale infrastructure in a rapid growth AI environment. Benefits France Competitive cash salary and equity Food: Daily lunch vouchers Sport: Monthly contribution to a Gympass subscription Transportation: Monthly contribution to a mobility pass Health: Full health insurance for you and your family Parental: Generous parental leave policy Visa sponsorship UK Competitive cash salary and equity Insurance Transportation: Reimburse office parking charges, or £90 per month for public transport Sport: £90 per month reimbursement for gym membership Meal voucher: £200 monthly allowance for meals Pension plan: SmartPension (percentages are 5% Employee & 3% Employer) By applying, you agree to our Applicant Privacy Policy.
Mistral AI
About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high performance, optimized, open source and cutting edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work. 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 France, USA, UK, Germany and Singapore. We are creative, low ego and team spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on Role summary At Mistral AI, we're pushing the boundaries of what's possible with agentic systems-building products like Mistral Studio and Mistral Vibe that redefine how users interact with AI. As a Security Researcher, you'll play a pivotal role in safeguarding these innovations by anticipating, identifying, and mitigating risks before they materialize. This isn't just about finding vulnerabilities; it's about shaping the future of secure AI by embedding an attacker's mindset into everything we build. You'll work at the intersection of offensive security, AI safety, and product development, collaborating with cross functional teams to harden our systems against evolving threats. Your expertise will directly influence how we design, deploy, and protect our most critical assets-ensuring our agents remain resilient, trustworthy, and ahead of adversaries. This role is ideal for those who thrive in dynamic environments, where creativity, technical depth, and a passion for security converge to solve unprecedented challenges. What you will do Proactively hunt for vulnerabilities in the interactions between our agentic applications, cloud infrastructure, and foundational models, with a focus on realistic, high impact attack vectors. Design and execute red and purple team exercises, simulating sophisticated adversarial scenarios to stress test our defenses and refine our detection capabilities. Partner with defensive teams to translate offensive insights into actionable improvements, from detection engineering to incident response. Conduct in depth penetration testing across our product suite, including AI driven workflows, custom infrastructure, and user facing interfaces. Build and automate offensive tooling to scale your impact, leveraging cutting edge techniques to stay ahead of emerging threats. Communicate findings with clarity and conviction, ensuring technical and non technical stakeholders understand risks and prioritize mitigations effectively. Shape Mistral AI's security strategy by contributing attacker informed perspectives to threat modeling, risk assessment, and architectural decisions. About you You're likely a strong fit if you bring: 7+ years of offensive security experience, with a track record of identifying and exploiting subtle vulnerabilities in complex systems-or equivalent expertise demonstrated through exceptional achievements. Deep knowledge of AI/ML security risks, including prompt injection, data leakage, model manipulation, and abuses of dynamic UI components. Hands on experience assessing modern technology stacks, such as: Custom Kubernetes deployments and containerized environments Cloud native architectures (AWS, GCP, or Azure) CI/CD pipelines and GitHub security best practices macOS/Linux internals and Python/React based applications Data science toolchains and AI/ML infrastructure A builder's mindset: The ability to write robust tools, automate offensive workflows, and contribute to defensive solutions in complex codebases. Strong intuition for trust boundaries and risk assessment in fast moving, high stakes environments. Outstanding communication skills, with the ability to distill technical nuances into compelling narratives that drive change. A collaborative spirit, eager to work alongside engineers, researchers, and product teams to embed security into every phase of development. Now, it would be ideal if you had experience with: Background in AI, data science, or related fields, with an understanding of how security intersects with model behavior and system design. Experience in high growth startups or research driven organizations, where agility and innovation are paramount. Expertise in adjacent disciplines, such as software engineering, detection engineering, SRE, or security architecture. Location & Remote This role is based in one of our European offices (Paris, France and London, UK). We will only consider candidates who either reside or are open to relocating there. We strongly believe in the value of in person collaboration and we encourage going to the office as much as we can (at least 3 days per week) to create bonds and smooth communication. Our remote policy aims to provide flexibility, improve work life balance and increase productivity. What we offer Competitive salary and equity (stock options) ️ Health insurance Transportation allowance Sport allowance Meal vouchers Private pension plan Generous parental leave policy Visa sponsorship By applying, you agree to our Applicant Privacy Policy.
About Mistral At Mistral AI, we believe in the power of AI to simplify tasks, save time, and enhance learning and creativity. Our technology is designed to integrate seamlessly into daily working life. We democratize AI through high performance, optimized, open source and cutting edge models, products and solutions. Our comprehensive AI platform is designed to meet enterprise needs, whether on premises or in cloud environments. Our offerings include le Chat, the AI assistant for life and work. 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 France, USA, UK, Germany and Singapore. We are creative, low ego and team spirited. Join us to be part of a pioneering company shaping the future of AI. Together, we can make a meaningful impact. See more about our culture on Role summary At Mistral AI, we're pushing the boundaries of what's possible with agentic systems-building products like Mistral Studio and Mistral Vibe that redefine how users interact with AI. As a Security Researcher, you'll play a pivotal role in safeguarding these innovations by anticipating, identifying, and mitigating risks before they materialize. This isn't just about finding vulnerabilities; it's about shaping the future of secure AI by embedding an attacker's mindset into everything we build. You'll work at the intersection of offensive security, AI safety, and product development, collaborating with cross functional teams to harden our systems against evolving threats. Your expertise will directly influence how we design, deploy, and protect our most critical assets-ensuring our agents remain resilient, trustworthy, and ahead of adversaries. This role is ideal for those who thrive in dynamic environments, where creativity, technical depth, and a passion for security converge to solve unprecedented challenges. What you will do Proactively hunt for vulnerabilities in the interactions between our agentic applications, cloud infrastructure, and foundational models, with a focus on realistic, high impact attack vectors. Design and execute red and purple team exercises, simulating sophisticated adversarial scenarios to stress test our defenses and refine our detection capabilities. Partner with defensive teams to translate offensive insights into actionable improvements, from detection engineering to incident response. Conduct in depth penetration testing across our product suite, including AI driven workflows, custom infrastructure, and user facing interfaces. Build and automate offensive tooling to scale your impact, leveraging cutting edge techniques to stay ahead of emerging threats. Communicate findings with clarity and conviction, ensuring technical and non technical stakeholders understand risks and prioritize mitigations effectively. Shape Mistral AI's security strategy by contributing attacker informed perspectives to threat modeling, risk assessment, and architectural decisions. About you You're likely a strong fit if you bring: 7+ years of offensive security experience, with a track record of identifying and exploiting subtle vulnerabilities in complex systems-or equivalent expertise demonstrated through exceptional achievements. Deep knowledge of AI/ML security risks, including prompt injection, data leakage, model manipulation, and abuses of dynamic UI components. Hands on experience assessing modern technology stacks, such as: Custom Kubernetes deployments and containerized environments Cloud native architectures (AWS, GCP, or Azure) CI/CD pipelines and GitHub security best practices macOS/Linux internals and Python/React based applications Data science toolchains and AI/ML infrastructure A builder's mindset: The ability to write robust tools, automate offensive workflows, and contribute to defensive solutions in complex codebases. Strong intuition for trust boundaries and risk assessment in fast moving, high stakes environments. Outstanding communication skills, with the ability to distill technical nuances into compelling narratives that drive change. A collaborative spirit, eager to work alongside engineers, researchers, and product teams to embed security into every phase of development. Now, it would be ideal if you had experience with: Background in AI, data science, or related fields, with an understanding of how security intersects with model behavior and system design. Experience in high growth startups or research driven organizations, where agility and innovation are paramount. Expertise in adjacent disciplines, such as software engineering, detection engineering, SRE, or security architecture. Location & Remote This role is based in one of our European offices (Paris, France and London, UK). We will only consider candidates who either reside or are open to relocating there. We strongly believe in the value of in person collaboration and we encourage going to the office as much as we can (at least 3 days per week) to create bonds and smooth communication. Our remote policy aims to provide flexibility, improve work life balance and increase productivity. What we offer Competitive salary and equity (stock options) ️ Health insurance Transportation allowance Sport allowance Meal vouchers Private pension plan Generous parental leave policy Visa sponsorship By applying, you agree to our Applicant Privacy Policy.