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Mistral

Research Engineer, Machine Learning

Paris
Level
Mid

Not stated in the posting: salary, work type, visa.

Open. First seen 2 October 2026.

About the role

Mistral's standard text

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.

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, Safety …) and turn fresh ideas into repeatable, scalable code.

What You Will 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.
  • Design, implement and benchmark ML algorithms; write clear, efficient code in Python.
  • Deliver prototypes that become production-grade components for Vibe and our enterprise API.

What We're Looking For

  • 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.

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.

Mistral's standard text

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.

What this role asks for

Particular to this role

CI/CD · CUDA · Deep Learning · NLP · TensorFlow

Rare in Mistral's other 138 open postings.

Standard for data science / ML roles

LLM · Machine Learning · PyTorch

Common in data science / ML postings at any company.

In most of Mistral's ads

Python

Named in most of its open postings, whatever the role.

66% of this description is written for the role. The rest is Mistral's standard text, folded away below.

Read against Mistral's other open postings on this site.

The team: Research Engineer HIRES STEADILY

This role is one of 9 open in Research Engineer. 6 were posted in the last 30 days and the oldest in August: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

LLM (8 of 9), Python (8 of 9), Kubernetes (7 of 9), CI/CD (4 of 9), Machine Learning (4 of 9), PyTorch (4 of 9), C++ (3 of 9)

OTHER ROLES ON THIS TEAM

From the team and dates on Mistral's own job board.

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