Machine Learning Researcher — Opportunihub
Job

Machine Learning Researcher

Janestreet · London

At a glance

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

About this job

&lt;h3&gt;About the Position&lt;/h3&gt; &lt;p&gt;Our goals are to give you a real sense of what it&#39;s like to work at Jane Street as a Machine Learning Researcher while also providing a truly unparalleled educational experience. You&#39;ll work side by side with experienced ML Researchers on projects that we&#39;ve selected for their combination of novel ML ideas and relevance to real-world systematic trading strategies. You&#39;ll learn how we think about markets through challenging classes and activities, and practice using established methods alongside our own unique twists to train practical models.&lt;/p&gt; &lt;p&gt;At Jane Street, the lines between research, technology, and trading are intentionally blurry, and you’ll have access to petabytes of data, a computing cluster with hundreds of thousands of cores, and a growing GPU cluster containing tens of thousands of high-end GPUs. Trading poses unusual challenges—large models and nonstationary datasets in a competitive multi-agent environment—that force us to search for novel techniques.&lt;/p&gt; &lt;p&gt;You&#39;ll spend the bulk of your internship working closely with full-time machine learning researchers on projects drawn from their own work. You might conduct an end-to-end study of an unexplored dataset, try a new modelling paradigm for a thorny problem, or consider blue-sky approaches that we&#39;re still trying to figure out. The problems we work on rarely have clean, definitive answers, and they often require insights from colleagues across the firm with different areas of expertise. Depending on the day, you might be diving deep into market data, tuning hyperparameters, debugging training issues, or analysing the predictions your model makes.&lt;/p&gt; &lt;p&gt;Note that given the IP-sensitive nature of machine learning research at Jane Street, it is unlikely that any research findings associated with the internship will be suitable for outside academic publication.&lt;/p&gt; &lt;h3&gt;About you&lt;/h3&gt; &lt;p&gt;If you&#39;ve never thought about a career in finance, you&#39;re in good company. Many of us were in the same position before working here. If you have a curious mind and a passion for solving interesting problems, we have a feeling you&#39;ll fit right in. We&#39;re more interested in how you think and learn than what you currently know. You should be:&lt;/p&gt; &lt;ul&gt; &lt;li&gt;An undergraduate, PhD student, or postdoc with practical experience working on ML problems&lt;/li&gt; &lt;li&gt;Interested in applying logical and mathematical thinking to all kinds of problems&lt;/li&gt; &lt;li&gt;Curious about the machine learning landscape and excited to apply state-of-the-art techniques drawn from many problem domains&lt;/li&gt; &lt;li&gt;Fluent with a versatile set of models and tricks&lt;/li&gt; &lt;li&gt;Able to rapidly implement and iterate on your ideas in Python and your favourite ML framework&lt;/li&gt; &lt;li&gt;Eager to ask questions, admit mistakes, and learn new things&lt;/li&gt; &lt;li&gt;Fluent in English&lt;/li&gt; &lt;/ul&gt; &lt;p&gt;If you&#39;d like to learn more, you can read about our &lt;a href=&quot;https://www.janestreet.com/join-jane-street/ml-research-interviews&quot;&gt;interview process&lt;/a&gt; and &lt;a href=&quot;https://www.janestreet.com/join-jane-street/get-to-know-us/&quot;&gt;meet some of the team&lt;/a&gt;. Learn more about Jane Street&#39;s internship program &lt;a href=&quot;https://www.janestreet.com/join-jane-street/internships/&quot;&gt;here&lt;/a&gt;.&lt;/p&gt;<p>Find <a href="https://www.arbeitnow.co.uk">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 Janestreet’s official page.
  4. 4 Submit as early as possible — many close once filled.
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Frequently asked questions

How do I apply for Machine Learning Researcher?

Review the full details and eligibility on this page, prepare your documents, then use the “Apply on official site” button to complete your application on Janestreet’s official page.

Is this opportunity remote or location-based?

This opportunity is based in London. Check the official listing for any relocation or on-site requirements.

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