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🟢 Actively Hiring · Posted 25d ago ⏳ Closes in 66 days UK Corridor 🛡️ UK Work Eligibility 🏢 Full-time

Staff Research Engineer (LLM Pre-Training)

🏢 Jetbrains • 📍 London • 🕒 Sep 14, 2026
Salary Range
£35,000 - £55,000
£2,917 - £4,583 / mo

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This vacancy has been independently reviewed by the OppaJob Transatlantic Career Intelligence Desk to confirm authentic direct employer recruiting, verify compensation transparency, and eliminate applicant processing fees.

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Corporate Registration Verified UK Companies House registration standing active
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Prevailing Wage Benchmark UK National Minimum Wage & Equality Act 2010 aligned
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Zero-Intermediary Direct Pipeline Direct candidate ATS submission. 100% free with zero recruitment charges.
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Corridor Right-to-Work Match UK Work Eligibility

Transatlantic Cost of Living & Purchasing Power Benchmark

Verified Analytics
Location Base
London
Tier-1 UK Economic Zone
Est. Take-Home Pay
68% - 74% (After PAYE & NI)
Single tax filer baseline
Transatlantic Parity
1.0 GBP ≈ $1.28 USD Living Standard
Direct corporate benchmark
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Position Overview & Specifications

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.

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Candidate Selection & Onboarding Process

1

Application & Resume Screening

Submit your tailored CV/Resume directly to the talent acquisition portal.

2

Technical & Competency Interviews

Virtual interviews with the hiring manager and multidisciplinary team.

3

Formal Offer & Benefits Negotiation

Written agreement outlining compensation, equity, retirement vesting, and relocation allowances.

4

Onboarding & Corporate Integration

Equipment provisioning, team orientation, and commencement of duties.

United Kingdom Right to Work & Skilled Worker Visa Guide

Corridor Intelligence

Employment in the United Kingdom requires legal Right to Work verified under the Home Office Points-Based Immigration System:

🇬🇧 Skilled Worker Visa (Tier 2)

Sponsoring employers must hold an active Home Office A-rated Sponsor License and assign a valid Certificate of Sponsorship (CoS). Role must meet the general minimum salary threshold (£38,700) or occupation going rate.

🏛️ Settlement (ILR) Pathway

Continuous employment under Skilled Worker status establishes eligibility for Indefinite Leave to Remain (ILR) after 5 continuous years, leading to British Citizenship.

⚖️ Official regulatory reference: UK Visas and Immigration (UKVI) & Home Office Sponsor Register.

Candidate Preparation Blueprint: JCP Core Machine Learning

Recruitment Insights

Based on transatlantic hiring benchmarks for Staff Research Engineer (LLM Pre-Training) roles across Jetbrains's corporate sector, successful applicants typically excel across three core dimensions:

1. Domain Competency

Demonstrated portfolio evidence, architecture/system design case studies, or validated professional certifications directly applicable to JCP Core Machine Learning.

2. Behavioral & Leadership

STAR method competency responses highlighting cross-functional leadership, conflict resolution, and delivering measurable enterprise ROI under tight timelines.

3. Compensation Alignment

Total compensation expectation aligned within the benchmarked £35,000 - £55,000 bracket, including retirement vesting and health parity.

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Hiring Organization
Jetbrains

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