Verified by our engine · Posted +6mo ago

Jane Street

Quantitative Trader

Jane Street · Quantitative Trading

London

Mid-level Still listed after 6+ months

Quant & Trading

Last seen 3h ago

Posted
+6mo ago

Posted on 2 May 2019

Workplace
Not specified

Work model not stated

Salary
Not disclosed

Salary range not shared by the company

Visa sponsorship
Not specified

Visa sponsorship details unknown

Listing history First seen 60+ days ago
  • First seen 60+ days ago. We first saw this listing on 10 Sept 2026. That is when we found it, not necessarily when it was posted.

First seen 10 Sept 2026. Last checked 12 Nov, 02:17 UTC. We read each employer's own career page on a cycle and record what changes; this is what we observed, not a verdict on the role.

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About the Position

Our trading is based on our own proprietary models and on busy days we engage in over a million trades. Traders work in teams to seek out and trade on pricing inefficiencies, develop models, manage risk, investigate new products, and push into new business areas. Experienced Traders teach and oversee the less-experienced. New Traders serve as assistants while they learn the ropes, getting increasing responsibility as they demonstrate their ability to handle it.

Technology is at the core of how we approach trading, and we consider ourselves as much a technology company as a trading firm. We use OCaml, a statically-typed functional programming language, as our primary development language, and have the largest team of OCaml Engineers in any industrial setting.

About You

We are looking for people who have a strong quantitative mind and enjoy working collaboratively to solve challenging problems in a practical setting. Prior knowledge of finance or economics is not expected or required. Experience with particular programming languages is also not required, although generally being comfortable programming in your language of choice is a plus. Fluency in English required.

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.

About Jane Street

Jane Street's European postings are all London. It's a proprietary trading firm building its own trading and research infrastructure in OCaml — the interview process is famously technical, and the roles here are engineering, not finance, despite the industry.

Apply at Jane Street