Applied Scientist / Research Engineer (Internship)

As an Applied Scientist / Research Engineer Intern on the Mistral AI team, you will help drive new research and work closely with clients on complex technical challenges. The team is responsible for developing advanced models spanning different modalities such as text, image, and speech. Your work will have direct impact as you collaborate cross-functionally with science, engineering, and product teams to deliver practical AI solutions. This role is based in our Paris or London offices.

Responsibilities

Run pre-training, post-training, and deploy advanced models on GPU clusters; Troubleshoot technical issues, including OOM errors and NCCL communication; Generate and curate data for all stages of model development and evaluation; Build tools and frameworks for data generation, model training, evaluation, and deployment; Collaborate with internal and external teams to apply AI to diverse use cases, including agent and retrieval-augmented generation pipelines; Manage communications and research project workflows with client teams; Ensure models regularly meet or exceed performance expectations

Requirements

Fluent English and clear communication skills with technical and non-technical audiences; Expertise in PyTorch or JAX; Confidence working independently with large codebases; Proficient in writing clean, efficient, and reliable Python code; Initiative to take ownership and deliver without heavy guidance; Collaborative attitude, low-ego, and willingness to keep learning; Demonstrated success through academic, professional, or personal technical projects; Required work authorization to complete the internship in France or the UK for its full duration

Nice to have

Experience or strong interest in areas like agents, multi-modality, robotics, diffusion models, or time-series analysis

Benefits

Comprehensive benefits package; Healthcare coverage; Parental leave; Retirement plans; Relocation support; Wellness programs; Meal and transportation allowances; Other location-specific perks