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Research Engineer, Machine Learning - Paris/London/Zurich/Warsaw
at Mistral AI
Mid LevelVisa sponsorship availableData Science/AI/ML
Posted 14 hours ago
No clicks
- Compensation
- Not specified
- City
- Paris, London, Zurich, Warsaw
- Country
- France, United Kingdom, Switzerland, Poland
Currency: Not specified
As a Research Engineer – ML track at Mistral AI, you will build and optimize large-scale learning systems powering open-weight models. You will join either the Platform RE Team (shared training framework, data pipelines and cluster tooling) or the Embedded RE Team inside a research squad to turn ideas into scalable, production-grade code. You will accelerate researchers by tackling heavy parts of ML pipelines, integrate checkpoints, streamline evaluation, and expose APIs, while conducting experiments on cutting-edge techniques. Strong Python and distributed training experience (PyTorch/JAX/TensorFlow) with 4+ years in large-scale ML codebases are required.
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 https://mistral.ai/careers.
Mistral AI participates in the E-Verify program
Role Summary
About the Research Engineering team
The team spans Platform (shared infra & clean code) and Embedded (inside research squads). Engineers can move along the research↔production spectrum as needs or interests evolve.
As a Research Engineer – ML track, you’ll build and optimise the large-scale learning systems that power our open-weight models. Working hand-in-hand with Research Scientists, you’ll either join:
- Platform RE Team: Enhance the shared training framework, data pipelines and cluster tooling used by every team; or
- Embedded RE Team: Sit inside a research squad (Alignment, Pre-training, Multimodal, …) and turn fresh ideas into repeatable, scalable code.
What will you do
• Accelerate researchers by taking on the heavy parts of large-scale ML pipelines and building robust tools.
• Interface cutting-edge research with production: integrate checkpoints, streamline evaluation, and expose APIs.
• Conduct experiments on the latest deep-learning techniques (sparsified 70 B + runs, distributed training on thousands of GPUs).
• Design, implement and benchmark ML algorithms; write clear, efficient code in Python.
• Deliver prototypes that become production-grade components for Le Chat and our enterprise API.
About you
• Master’s or PhD in Computer Science (or equivalent proven track record).
• 4 + years working on large-scale ML codebases.
• Hands-on with PyTorch, JAX or TensorFlow; comfortable with distributed training (DeepSpeed / FSDP / SLURM / K8s).
• Experience in deep learning, NLP or LLMs; bonus for CUDA or data-pipeline chops.
• Strong software-design instincts: testing, code review, CI/CD.
• Self-starter, low-ego, collaborative.
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)
