J

Jane Street

Trades stocks, bonds and funds as a market maker

Front End Software Engineer

Frontend EngineeringConfirmed live in the last 24 hours
Full-timeLondon, UKNo salary listedIn-person

About the Job

Requirements

  • A strong background in web technologies, including browser fundamentals like CSS and the DOM, and an understanding of the principles of UI frameworks like Vue, Angular, React, and Flutter
  • Practical experience building sophisticated UIs in the browser
  • An interest in and appreciation of typed functional programming as an approach to UI construction. Experience with languages like Elm, ReasonML, Purescript, and Typescript is a plus (we don’t expect experience in OCaml in particular.)
  • Fluency in English is required

Responsibilities

  • Take part in the design and implementation of our next-generation of browser-based tools for operating our trading infrastructure
  • Work on the individual tools and find opportunities to create libraries and abstractions that capture common interaction idioms
  • Sharpen development practices and firm-wide approach to UI development
  • Work in multiple parts of the stack, including front-ends, back-ends, middleware, and databases
  • Work closely with traders and other end-users to better understand their needs

Desired Qualifications

  • Experience with Elm, ReasonML, PureScript, and Typescript is a plus
  • We do not expect experience in OCaml in particular

About the Company

Jane Street

Trades stocks, bonds and funds as a market maker

Jane Street trades stocks, bonds, options, and exchange-traded funds with its own money as a market maker, a firm that constantly quotes prices to buy and sell so other investors can trade whenever they want. In 2025, it made more money from trading than JPMorgan Chase or Goldman Sachs, the biggest trading banks on Wall Street. Its traders, researchers, and engineers build computer-driven strategies that trade on exchanges and other venues around the world, and it also trades directly with large institutional clients. It earns the small gap between buying and selling prices across huge volumes, plus gains on positions it holds for minutes to days. Jane Street was founded in 2000 and is based in New York.

Company size
1,001-5,000
Company stage
Debt Financing
Total funding
$90.8B
Headquarters
New York City, New York
Founded
2000

Recently Posted Jobs

Explore more opportunities at Jane Street

See more jobs