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Compiler Engineer

Jane Street

Jane Street is also hiring for this role in New York, New York, United States.

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This role on the market

136 open compiler roles across 24 companies are on ApplySarthi right now, most of them in Bengaluru (11), Pune (1), Hyderabad (1).

What compiler roles keep asking for: C++ (71%), Python (33%), Deep learning (32%), PyTorch (29%), Machine learning (20%), Rust (12%) — counted across their open postings here.

Linux jobs

Jane Street has 217 open roles listed here.

Counted across 14 company job boards, updated as roles open and close.

Preparing for this interview

Interviews for compiler roles keep coming back to C++, Python, Deep learning, PyTorch. Practise those questions before you sit with Jane Street.

Questions you are likely to be asked

  1. Why do you want to join Jane Street?
  2. What is your experience with Linux? Tell me one thing you learned the hard way.
  3. Describe a time a deadline forced a trade-off in quality. What did you choose and why?
  4. How would you design an API for a feature you have worked on?
  5. What do you do when a production issue happens on your code?

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About the Position

We are looking for an experienced software engineer to work on code generation in the OxCaml compiler, which is open source. OxCaml is Jane Street’s variant of the OCaml language, equipped with powerful features for high-performance and parallel programming, with data race freedom guarantees.

This role involves the full cycle of identifying new optimisations, coding, testing, benchmarking and deployment. There will be the opportunity to work across a wide variety of intermediate representations, including CPS, SSA and maybe even Sea of Nodes. This role will also allow you to interact with many different groups and exceptional individuals across Jane Street worldwide.

About You

The ideal candidate will be super productive: fast at writing correct code, willing to use AI assistance to get changes to production faster and experienced with debuggers (e.g., lldb, gdb) and low-level Linux tools. Having knowledge of x86-64 and AArch64 architectures at the assembly language and architectural level is a plus.

We are happy to consider candidates with experience on any compiler toolchain, although knowledge of LLVM would be useful. No knowledge of the OCaml or OxCaml languages is required–we can teach you what you need to know.

We are particularly interested in candidates who have proven experience managing a team of developers, and who would enjoy doing that alongside their normal technical work. Fluency in English is required. 

If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com

 

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Listed on greenhouse · posted 2026-06-26. ApplySarthi collects openings and links to application pages; the role is advertised by Jane Street, not by us.