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Linux Engineer

Jane Street· Technology
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Hybrid (London)full-timePosted 3mo ago

About the role

Linux Engineers maintain and improve the firm’s production trading infrastructure, working with a mix of in-house and open source software. Responsibilities include debugging kernel performance, developing management tools, and resolving real-time production issues, with a focus on deployment automation, scalable configuration management, and obsessive monitoring.

Responsibilities

  • Maintain and improve the platform that powers Jane Street's production trading systems
  • Debug kernel performance
  • Develop management tools
  • Resolve production issues in real time
  • Contribute to deployment automation, scalable configuration management, and monitoring
  • Collaborate with Trading, Technology, and Operations teams to build robust systems
  • Perform root-cause analyses and implement long-term fixes in a clean and robust way

Qualifications

  • Bachelor's degree in Computer Science, Software Engineering or other technical discipline (or equivalent experience)
  • Clear and concise communication skills
  • Deep knowledge of operating system fundamentals, especially Linux
  • Fluency with the Unix command line and shell scripting
  • Practical experience with modern Linux systems and systems programming concepts (C, sockets, virtual memory, process lifecycle)
  • Basic understanding of network protocols
  • Strong troubleshooting skills and knowledge of profiling/debugging tools (gdb, perf, DTrace, eBPF, SystemTap)
  • Programming experience in any language (functional languages a plus)
  • Fluency in English required

Skills

Required:Unix/Linux internalsShell scriptingC, sockets, VM, process lifecycleNetworking conceptsDebugging/profiling toolsProgramming in any language
Nice to have:OCaml

Benefits

  • Jane Street is an Equal Opportunity Employer
Last updated Oct 25, 2026. Interested? Apply on the company site.

About Jane Street

SIX

Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving.

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