Research Engineer, Machine Learning

Mistral; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

Mistral is seeking a Research Engineer – ML track to build and optimise large-scale learning systems powering open-weight models. You will work closely with Research Scientists and join either Platform RE or Embedded RE teams to turn ideas into robust code.

Required: advanced degree in CS, 4+ years in large ML codebases, and hands-on with PyTorch, JAX or TensorFlow, plus distributed training tools. You thrive with collaboration and rigorous software practices.

Qualifications

• 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; distributed training (DeepSpeed / FSDP / SLURM / K8s).
• Experience in Deep learning, NLP or LLMs; CUDA or data-pipeline chops a bonus.

Responsibilities

• Accelerate researchers by taking on 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; run thousands of GPUs where needed.
• Design, implement and benchmark ML algorithms; write clear, efficient Python code.
• Deliver prototypes that become production-grade components for Le Chat and our enterprise API.

Skills

ML codebases

Distributed training

PyTorch

JAX

TensorFlow

CI/CD

NLP/LLMs

CUDA

Data pipelines

Code review

Education

Master’s or PhD in Computer Science

Tools

DeepSpeed

FSDP

SLURM

K8s

Job 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

The team spans Platform (shared infra & clean code) and Embedded (inside research squads). Engineers can move along the researchproduction 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.
• Embedded RE Team: Sit inside a research squad (Alignment, Pre‑training, Multimodal, …) 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.
• 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.

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.

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.