Low-Latency Engineer
- Location
- New York, NY · On-site
- Job type
- Full-time
- Level
- Mid-level
- Listed
- 30 days ago
Skills & highlights for this role
- low-latency systems
- C
- C++
- computer architecture
Also useful
- OCaml
- Solarflare OpenOnload
- DPDK
- InfiniBand verbs
- hardware performance counters
- Java
- C#
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
From Jane Street's careers page, first listed on Rolev.ai on October 10, 2026. Rolev.ai is not the employer.
How Rolev.ai helps with this application
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Common questions
Where is the Low-Latency Engineer job at Jane Street located?
This Low-Latency Engineer position at Jane Street is located in New York, NY (On-site). Always check Jane Street's application page for specific state eligibility or relocation policies.
What qualifications are required for Low-Latency Engineer at Jane Street?
For the Low-Latency Engineer role, Jane Street highlights experience with low-latency systems, C, C++, computer architecture. Rolev.ai can score your existing resume against these requirements and show any skill gaps before you apply.
How do I apply for the Low-Latency Engineer position at Jane Street?
This listing links directly to Jane Street's Greenhouse application page. You can apply directly on Jane Street's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Greenhouse application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.