Staff Research Engineer (LLM Pre-Training) — Opportunihub
Job

Staff Research Engineer (LLM Pre-Training)

Jetbrains · London

At a glance

Type
Job
Organisation
Jetbrains
Location
London
Work mode
On-site
Deadline
Rolling / not stated
Posted
11 Aug 2026

About this job

&lt;p data-pos=&quot;0&quot;&gt;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.&lt;/p&gt; &lt;p data-pos=&quot;284&quot;&gt;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.&lt;/p&gt; &lt;p data-pos=&quot;524&quot;&gt;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.&lt;/p&gt; &lt;h3 id=&quot;we-value-engineers-who&quot; data-pos=&quot;811&quot;&gt;&lt;strong data-pos=&quot;813&quot;&gt;We value engineers who:&lt;/strong&gt;&amp;nbsp;&lt;/h3&gt; &lt;ul data-pos=&quot;840&quot;&gt; &lt;li data-pos=&quot;840&quot;&gt;Can plan projects and make decisions independently, consulting with others if needed.&lt;/li&gt; &lt;li data-pos=&quot;928&quot;&gt;Identify customer needs and prioritize their tasks accordingly.&lt;/li&gt; &lt;li data-pos=&quot;994&quot;&gt;Start with the simplest solutions and gradually add complexity as needed.&lt;/li&gt; &lt;li data-pos=&quot;1070&quot;&gt;Take sole responsibility for an entire subsystem.&lt;/li&gt; &lt;li data-pos=&quot;1122&quot;&gt;Have a passion for learning and a desire to stay up to date with the latest developments in the LLM field.&lt;/li&gt; &lt;/ul&gt; &lt;h3 id=&quot;in-this-role-you-will&quot; data-pos=&quot;1236&quot;&gt;&lt;strong data-pos=&quot;1238&quot;&gt;In this role, you will:&lt;/strong&gt;&amp;nbsp;&lt;/h3&gt; &lt;ul data-pos=&quot;1265&quot;&gt; &lt;li data-pos=&quot;1265&quot;&gt;Work with stakeholders to convert business requirements into technical specifications.&lt;/li&gt; &lt;li data-pos=&quot;1354&quot;&gt;Train LLMs from scratch on a large GPU cluster.&lt;/li&gt; &lt;li data-pos=&quot;1404&quot;&gt;Collect and process pre-training and fine-tuning datasets.&lt;/li&gt; &lt;li data-pos=&quot;1465&quot;&gt;Support and improve existing subsystems.&lt;/li&gt; &lt;/ul&gt; &lt;h3 id=&quot;well-be-happy-to-have-you-on-our-team-if-you-have&quot; data-pos=&quot;1513&quot;&gt;&lt;strong data-pos=&quot;1515&quot;&gt;We’ll be happy to have you on our team if you have:&lt;/strong&gt;&amp;nbsp;&lt;/h3&gt; &lt;ul data-pos=&quot;1570&quot;&gt; &lt;li data-pos=&quot;1570&quot;&gt;Experience in design, deployment, and support of production ML systems.&lt;/li&gt; &lt;li data-pos=&quot;1644&quot;&gt;A strong theoretical background in NLP and transformer-based approaches.&lt;/li&gt; &lt;li data-pos=&quot;1719&quot;&gt;Proficiency with modern deep learning frameworks such as PyTorch and common libraries for NLP.&lt;/li&gt; &lt;li data-pos=&quot;1816&quot;&gt;Experience in distributed training of multi-billion parameter models.&lt;/li&gt; &lt;li data-pos=&quot;1888&quot;&gt;Attention to detail in everything you do and great communication skills.&lt;/li&gt; &lt;/ul&gt; &lt;h3 id=&quot;wed-be-especially-thrilled-if-you-have-experience-with&quot; data-pos=&quot;1968&quot;&gt;&lt;strong data-pos=&quot;1970&quot;&gt;We’d be especially thrilled if you have experience with:&lt;/strong&gt;&amp;nbsp;&lt;/h3&gt; &lt;ul data-pos=&quot;2030&quot;&gt; &lt;li data-pos=&quot;2030&quot;&gt;LLM inference frameworks such as vLLM, DeepSpeed, TensorRT.&lt;/li&gt; &lt;li data-pos=&quot;2092&quot;&gt;LLM alignment techniques such as RLHF/RLAIF.&lt;/li&gt; &lt;li data-pos=&quot;2139&quot;&gt;MLOps tools and practices, including CI/CD for ML.&lt;/li&gt; &lt;li data-pos=&quot;2192&quot;&gt;K8s and Kubeflow.&lt;/li&gt; &lt;li data-pos=&quot;2212&quot;&gt;Scientific publications in the NLP field.&lt;/li&gt; &lt;/ul&gt; &lt;h3 id=&quot;how-we-develop-jetbrains-ai&quot; data-pos=&quot;2261&quot;&gt;&lt;strong data-pos=&quot;2263&quot;&gt;How we develop JetBrains AI:&lt;/strong&gt;&amp;nbsp;&lt;/h3&gt; &lt;ul data-pos=&quot;2295&quot;&gt; &lt;li data-pos=&quot;2295&quot;&gt;A cluster of hundreds of NVIDIA GPUs as training infrastructure.&lt;/li&gt; &lt;li data-pos=&quot;2362&quot;&gt;Git for source control management.&lt;/li&gt; &lt;li data-pos=&quot;2399&quot;&gt;Python, PyTorch, and HuggingFace as an ML stack.&lt;/li&gt; &lt;li data-pos=&quot;2450&quot;&gt;Kubeflow and Weights &amp;amp; Biases for experiment tracking.&lt;/li&gt; &lt;li data-pos=&quot;2507&quot;&gt;TeamCity as a CI Automation system.&lt;/li&gt; &lt;/ul&gt; &lt;p&gt;&lt;span style=&quot;color: rgb(255, 255, 255);&quot;&gt;#LI-KP1&lt;/span&gt;&lt;/p&gt;&lt;div class=&quot;content-conclusion&quot;&gt;&lt;p&gt;&lt;strong&gt;We are an equal opportunity employer&lt;/strong&gt;&lt;br&gt;&lt;br&gt;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.&lt;/p&gt; &lt;p&gt;&lt;em data-stringify-type=&quot;italic&quot;&gt;We process the data provided in your job application in accordance with the &lt;a href=&quot;https://www.jetbrains.com/legal/docs/privacy/privacy-recruitment/&quot;&gt;Recruitment Privacy Policy.&lt;/a&gt;&lt;/em&gt;&lt;/p&gt;&lt;/div&gt;<p>Find more <a href="https://www.arbeitnow.co.uk/english-speaking-jobs">English Speaking Jobs in United Kingdom</a> on Arbeitnow</a>

How to apply

  1. 1 Read the full details above and confirm you meet the eligibility criteria.
  2. 2 Prepare your documents — an updated CV, and any cover letter, proposal or certificates required.
  3. 3 Click Apply on official site to complete your application on Jetbrains’s official page.
  4. 4 Submit as early as possible — many close once filled.
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