Software Engineer
- Level
- Mid
Not stated in the posting: salary, work type, visa.
Open. First seen 3 October 2026.
About the role
About the Position
We're always hiring software engineers for all of our offices. Technology is at the core of how we approach our work, and engineers are intimately involved in every area of the business.
We are big believers in functional programming and use OCaml, a statically typed functional programming language, as our primary tool. More recently, Python has become a vital part of Jane Street’s research and trading work, acting as the go-to language for data analysis, visualization, and machine learning.
We also believe in the value of open source software, using it in our daily work and releasing over a million lines of our own code as open source.
About You
- Top-notch programming skills
- Deep experience with—and love for—technology. There's no specific checklist; we use software to approach a variety of problems, so we're interested in everything from machine learning to systems administration to programming language design
- Strong interpersonal skills. Software engineering at Jane Street is highly collaborative, and we are looking for people who can work effectively in small, close-knit teams
- We don’t expect you to have experience with functional programming, OCaml, Python, or finance; we’re happy to hire talented engineers and teach them what they need to know.
- Fluency in English required
If you'd like to get an idea of what we cover in our software engineering interview process, you can visit our interview prep page.
Jane Street's standard text
If you're a recruiting agency and want to partner with us, please reach out to agency-partnerships@janestreet.com.
What this role asks for
Standard for software engineering roles
Python
Common in software engineering postings at any company.
93% of this description is written for the role. The rest is Jane Street's standard text, folded away below.
Read against Jane Street's other open postings on this site.
The team: Software Engineering
This role is one of 47 open in Software Engineering.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Python (22 of 47), Machine Learning (8 of 47), FPGA (6 of 47), SQL (6 of 47), C++ (5 of 47), Haskell (4 of 47), Jira (4 of 47)
OTHER ROLES ON THIS TEAM
- Software Engineer posted Sep 1
- Software Engineer posted Sep 1
- Software Engineer posted Aug 7
- Data Strategist posted Aug 7
- Hardware Engineer (FPGA/ASIC) posted Aug 3
- Hardware Engineer (FPGA/ASIC) posted Aug 3
- Software Engineer posted Aug 3
- Hardware Engineer (FPGA/ASIC) posted Jul 24
- Software Engineer posted Jul 21
- Data Engineer posted Jul 14
- Hardware Engineer (FPGA/ASIC) posted Jul 10
- Software Engineer posted Jul 9
- Software Engineer posted Jul 6
- Software Engineer posted Jul 6
- Compiler Engineer posted Jun 26
- Compiler Engineer posted Jun 17
- Formal Methods Engineer posted Jun 11
- Formal Methods Engineer posted Jun 11
- ASIC Physical Design Engineer posted Apr 30
- ASIC Physical Design Engineer posted Apr 17
- Technical Product Manager posted Jan 30
- ASIC Engineer posted Oct 29
- ASIC Engineer posted Oct 29
- FIX Onboarding and Connectivity Engineer posted Sep 12
- FIX Onboarding and Connectivity Engineer posted Sep 12
- Programming Language Engineer posted Oct 25
- Data Engineer posted Oct 4
- Software Engineer / Writer posted Sep 5
- Data Engineer posted Feb 15
- Market Data Specialist, Metadata posted Feb 13
- Technical Product Manager posted Jan 16
- Data Engineer posted Jan 9
- Technical Programme Manager posted Oct 28
- Low-Latency Engineer posted Jul 6
- Front End Software Engineer posted Jun 27
- Front End Software Engineer posted Jun 24
- Data Specialist posted May 3
- Production Engineer posted Jan 10
- Production Engineer posted Jan 10
- Software Engineer posted Dec 29
- Production Engineer posted Apr 1
- Production Engineer posted Mar 28
- Technical Program Manager posted Dec 11
- Software Engineer posted Jun 8
- Software Engineer posted May 6
- Programming Language Engineer posted May 2
From the team and dates on Jane Street's own job board.
Other openings for this role
3 open postings for this role in London, England, United Kingdom, first posted 3 October 2026. The company is likely hiring for more than one position. None has been taken down and posted again.
- 3 October 2026 – open
- 3 October 2026 – open (this posting)
- 3 October 2026 – open
Salary context
214 other open postings titled Software Engineer state a salary: median USD 140,000 to USD 200,000 a year.
See Software Engineer salaries in London →
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