Low-Latency Engineer

Jane Street

Full-Time Engineers
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Location
New York, New York, United States
Posted
July 21, 2026

Job Description

About the Position


We are looking for a Software Engineer with experience in high-performance, low latency systems. You’ll work closely with our quantitative researchers and developers, taking a holistic approach to design and optimize our fast-trading systems.


We build systems primarily in OCaml with only small amounts of C and C++, but you don’t need any experience with OCaml in particular (we can teach it to you) or knowledge of the financial markets. The most important qualification is experience with low level systems programming and optimization, whether it is in C, C++, or any other language.


About You



  • Experience with low level systems programming and optimization, and working on network applications that require extremely low latency and high throughput

  • Can understand, interpret, and improve application performance through hardware performance counters and other profiling tools

  • Has a thorough...