Jane Street tech stack
Jane Street builds mostly with Python, OCaml, PowerShell, Bash. Its stack also includes Linux, Windows, NCCL, PyTorch. Python is named in 19 of the 54 job postings Jane Street published in the last 12 months (35%). Counted by Alion from the job postings of Jane Street, updated Sep 28, 2026.
What programming languages does Jane Street use?
Python is named in 35% of job postings at Jane Street, followed by OCaml (28%), PowerShell (17%), Bash (7%).
C++ 
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What frameworks and libraries does Jane Street use?
NCCL is named in 2% of job postings at Jane Street, followed by PyTorch (2%), TensorFlow (2%), cuDNN (2%).
What cloud and platforms does Jane Street use?
Linux is named in 13% of job postings at Jane Street, followed by Windows (13%), .NET (4%), Tableau (4%).
What developer tools does Jane Street use?
Microsoft Excel is named in 15% of job postings at Jane Street, followed by Formal Verification (4%), AutoCAD (4%), Xilinx Vivado (4%).
AutoCAD
2 4%
Xilinx Vivado
2 4%
Adobe Photoshop
1 2%
What AI and ML technologies does Jane Street use?
ChatGPT is named in 4% of job postings at Jane Street.
ChatGPT
2 4%
Which engineering practices does Jane Street ask for?
Machine Learning is named in 24% of job postings at Jane Street, followed by AI Agents (9%), BGP (6%), OSPF (6%).
AI Agents
5 9%
CI/CD
2 4%
Prompt Engineering
2 4%
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What does each Jane Street team work with?
The technologies each team's postings require most often, with the number of postings that require them.
Industrial Engineering
6 postingsHardware
6 postingsHow does your stack fit Jane Street?
How is the Jane Street stack changing?
Read from the dates of the postings themselves: a technology is new when the first posting that names it appeared in the last six months, rising or falling when its share of postings moved between the last two quarters.
How modern is the Jane Street stack?
Jane Street scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How common is the Jane Street stack in its industry?
Share of the 2,151 companies in the same industries, whose stack Alion knows, that use each technology.
What sets Jane Street apart
Companies with a stack like Jane Street
Questions about the Jane Street tech stack
What programming languages does Jane Street use?
The languages named in Jane Street job postings are Python (35%), OCaml (28%), PowerShell (17%), Bash (7%), C++ (7%), as a share of the 54 postings of the last 12 months.
Does Jane Street use Linux?
Yes. Linux is named in 7 of 54 job postings (13%) and required in 7 of them.
What cloud and platforms does Jane Street use?
The cloud and platforms named in Jane Street job postings are Linux (7), Windows (7), .NET (2) (postings in brackets).
What skills do you need for a Industrial Engineering job at Jane Street?
Industrial Engineering postings at Jane Street most often require OCaml (4), PowerShell (4), .NET (2), C# (2), out of 6 postings in the last 12 months.
Is the Jane Street tech stack changing?
Yes. Verilog, Chisel, VHDL, Xilinx Vivado first appeared in Jane Street job postings in the last six months.
How modern is the Jane Street tech stack?
Jane Street scores 68 out of 100 (Modern). The score averages how current each technology in the stack is and adds weight for AI adoption. AI technologies in the stack: 1; legacy ones: 0.
How does Alion know the Jane Street tech stack?
Alion reads every job posting Jane Street publishes and tags the technologies each one names. The figures on this page count the 54 postings of the last 12 months and were updated on Sep 28, 2026.
Method and citation
Alion reads every job posting the company publishes and tags the technologies each one names. Shares count the postings of the last 12 months, open and closed; the company's own products are counted apart. How we count
Alion, "Jane Street tech stack: 44 technologies from 54 job postings", as of Sep 28, 2026. https://alion.io/company/jane-street/technologies