JetBrains Logo

JetBrains

Staff Research Engineer (LLM Pre-Training)

Reposted 28 Days Ago
Be an Early Applicant
In-Office or Remote
Hiring Remotely in London, Greater London, England, GBR
Senior level
In-Office or Remote
Hiring Remotely in London, Greater London, England, GBR
Senior level
Design, train, and deploy large language models from scratch; convert business requirements into technical specs; collect and process pretraining/fine-tuning datasets; run distributed training on large GPU clusters; support and improve production ML subsystems and tooling.
The summary above was generated by AI

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 Research Engineer 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.

We value engineers who: 
  • Can plan projects and make decisions independently, consulting with others if needed.
  • Identify customer needs and prioritize their tasks accordingly.
  • Start with the simplest solutions and gradually add complexity as needed.
  • Take sole responsibility for an entire subsystem.
  • Have a passion for learning and a desire to stay up to date with the latest developments in the LLM field.
In this role, you will: 
  • 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.
We’ll be happy to have you on our team if you have: 
  • 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.
We’d be especially thrilled if you have experience with: 
  • LLM inference frameworks such as vLLM, DeepSpeed, TensorRT.
  • LLM alignment techniques such as RLHF/RLAIF.
  • MLOps tools and practices, including CI/CD for ML.
  • K8s and Kubeflow.
  • Scientific publications in the NLP field.
How we develop JetBrains AI: 
  • 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.

#LI-KP1

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.

Similar Jobs

Yesterday
Remote or Hybrid
Expert/Leader
Expert/Leader
Cloud • Information Technology • Security • Software • Cybersecurity
Lead technical go-to-market activities for enterprise customers, from discovery and technical validation through onboarding, adoption, renewal, and expansion. Design Cloudflare network and security architectures, conduct demonstrations and proofs of concept, guide deployment strategies, and advise engineering and executive stakeholders. Support customer health, QBRs, cross-sell opportunities, and technical enablement while using AI, scripting, and automation to improve workflows. The role carries a revenue quota and may require 20–50% travel.
Top Skills: BashBgpBot ManagementCdnCi/CdCloudflareCloudflare WorkersDnsFirewallsGoGraphQLGreHTTPHttp/2HttpsJavaScriptLlmsLuaMtlsNetwork SecurityObservabilityPulumiPythonRagRate LimitingRest ApisSaseSdksSsl/TlsTcpTerraformTls 1.3UdpWafWebhooksZero Trust
2 Days Ago
Easy Apply
Remote or Hybrid
Easy Apply
Junior
Junior
Artificial Intelligence • Cloud • Computer Vision • Hardware • Internet of Things • Software
Generate sales pipeline for Samsara’s EMEA business through personalized outbound phone, email, and LinkedIn outreach. The role involves making 60+ daily prospect calls, maintaining Salesforce records, becoming a product expert, attending trade shows, and collaborating with Account Executives. Successful representatives can progress through Samsara’s ADR program toward an Account Executive role.
Top Skills: Internet Of Things (Iot)LinkedInLushaSaaSSalesforceSalesloft
3 Days Ago
Easy Apply
Remote or Hybrid
Easy Apply
Senior level
Senior level
Cloud • Information Technology • Security • Software • Cybersecurity
Own and expand a portfolio of large enterprise accounts in Germany by identifying new use cases for Zscaler’s Zero Trust platform. Develop multi-year account plans, generate pipeline, lead executive sales engagements, coordinate cross-functional teams and channel partners, follow a structured sales methodology, and maintain forecast accuracy. The role focuses on expanding existing customer relationships, increasing platform adoption, and securing long-term strategic partnerships.
Top Skills: Ai Workload ProtectionAi/MlCloud SecurityEnterprise SoftwarePredictive Sales AnalyticsSaaSSaseZero Trust Exchange

What you need to know about the London Tech Scene

London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account