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Jane Street

Trades stocks, bonds and funds as a market maker

Cybersecurity Engineer

Security Operations & Incident ResponseConfirmed live in the last 24 hours
Full-timeLondon, UKNo salary listedIn-person

About the Job

Requirements

  • Graduating with a Bachelor's degree in Computer Science, Engineering, Information Systems, or a related field.
  • Be an avid follower of cybersecurity news.
  • Be a strong programmer with high potential and an aptitude for learning.
  • Be comfortable managing code and configurations in version control and know how to use an editor.
  • Be familiar with threat modeling and able to clearly communicate tradeoffs to internal stakeholders.
  • Be able to explain personal cybersecurity decisions and the reasoning behind them.
  • Be able to adapt to changing scenarios and make challenging decisions under pressure.
  • Be fluent in English.

Responsibilities

  • Develop and use monitoring tools to protect the firm.
  • Handle incident response and remediation when a threat is found.
  • Use a methodical approach to unstructured investigations to locate and repair the source of a security issue.
  • Promote cybersecurity best practices across the firm and share learning with colleagues and new analysts.

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

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