Staff Research Engineer (LLM Pre-Training)

About the Position

At JetBrains, code is our passion. Ever since we started back in 2000, we have been striving to make the world’s most robust and effective developer tools. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create.

We are working on an ambitious new platform that provides AI capabilities to all JetBrains products. Our platform is based on models developed in-house for writing and coding assistance, as well as integration with our strategic partners.

We are looking for a Staff Research Engineer (LLM Pre-Training) who can contribute to training foundation models for coding tasks. You’ll be working on developing Large Language Models from scratch and deploying them into production environments where they will be accessible by end users across the globe.

Responsibilities

• Work with stakeholders to convert business requirements into technical specifications.
• Train LLMs from scratch on a large GPU cluster.
• Collect and process pre-training and fine-tuning datasets.
• Support and improve existing subsystems.

Requirements

• Experience in design, deployment, and support of production ML systems.
• A strong theoretical background in NLP and transformer-based approaches.
• Proficiency with modern deep learning frameworks such as PyTorch and common libraries for NLP.
• Experience in distributed training of multi-billion parameter models.
• Attention to detail in everything you do and great communication skills.

Nice to Have

• Experience with LLM inference frameworks such as vLLM, DeepSpeed, TensorRT.
• Knowledge of LLM alignment techniques such as RLHF/RLAIF.
• Familiarity with MLOps tools and practices, including CI/CD for ML.
• Experience with K8s and Kubeflow.
• Scientific publications in the NLP field.

We Offer

• A cluster of hundreds of NVIDIA GPUs as training infrastructure.
• Git for source control management.
• Python, PyTorch, and HuggingFace as an ML stack.
• Kubeflow and Weights & Biases for experiment tracking.
• TeamCity as a CI Automation system.

About the Company

We are an equal opportunity employer. We know great ideas can come from anyone, anywhere. That’s why we do our best to create an open and inclusive workplace – one that welcomes everyone regardless of their background, identity, religion, age, accessibility needs, or orientation.

We process the data provided in your job application in accordance with the Recruitment Privacy Policy.

Locations

• Amsterdam, Netherlands
• Berlin, Germany
• Limassol, Cyprus
• London, United Kingdom
• Madrid, Spain

A lot of teams at JetBrains are distributed across our core locations. If you are not based in one of the locations above, we’d be happy to talk through relocation possibilities with you.