Low-Latency Engineer

Full Timemid

New York, New York, United StatesPosted 10 weeks ago

Role Overview

Jane Street is hiring a mid-level Low-Latency Engineer. This is a full-time role in New York, New York. Full responsibilities, required qualifications, and the apply link are listed in the description below.

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JavaOREngineerOCamlAMDIntelSolarflareOpenOnload

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 understanding of modern computer architecture and can talk to others about it; for example, can you describe modern x86 AMD and Intel cache hierarchies?
Some experience with fast-packet processing in user space and common kernel-bypass implementations would be ideal (such as Solarflare OpenOnload/TCPDirect/ef_vi, Exablaze, InfiniBand verbs, DPDK)
Experience working around the performance challenges of languages with a managed runtime (such as Java or C#) and familiarity with a typed functional language are a plus

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

janestreet.com

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Frequently Asked Questions

How do I apply for the Low-Latency Engineer position at Jane Street?

Use the Apply button above to submit your application directly to Jane Street. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.

Where is the Low-Latency Engineer position at Jane Street located?

This position is based in New York, New York. Jane Street has not indicated remote or hybrid options for this role, so candidates should plan for on-site work.

What does a Low-Latency Engineer at Jane Street earn?

Jane Street has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.

When was the Low-Latency Engineer role at Jane Street posted?

This role was posted on May 11, 2026 (71 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.