freehire launches on Product Hunt on 26 August.

Follow →

Jane Street

Discussion

Low-Latency Engineer

Open 55d posting dated last week

Summary

Build and optimize ultra-fast trading systems in OCaml/C/C++, focusing on low-latency networking and hardware-level performance tuning.

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.

Show

What this application asks

greenhouse

First Name, Last Name, Email, Phone, Resume/CV, Cover Letter

  • Preferred First Name optional
  • Additional information (for source) optional
  • Have you interviewed with Jane Street before? choose one
  • Pronouns optional
  • Are you currently a student? choose one
  • Enter your college/university optional
  • Candidate: college/university optional
  • Major/Field of study optional
  • Year you expect to complete your education choose one · optional
  • What is your off-cycle availability? optional
  • Extra written answer · optional
  • Year you expect to begin full time employment optional
  • Current degree end date optional
  • Current degree start date optional
  • What is your current education level? choose one · optional
  • LinkedIn profile optional
  • Website UID optional
  • Who is your current employer/position? optional
  • How did you hear about us? choose one
  • Area of Study choose one · optional
  • Languages Spoken choose any · optional
  • Additional Information For Languages optional
  • What year did you graduate high school? optional
  • University Email Address optional