Jane Street
janestreet.com
Actively hiring
Hedge Funds & Alternative Investments
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News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Investor profile
InvestorInvestments
7
1 of them startups
Hiring now
2
26 open roles
Deals in 12 months
1
1 as the lead
Rounds in 12 months
1
$105M raised
Focusshare of its companies
Software Testing & QA 14%Custom Software Development 14%
Where its companies are
United States 14%Norway 14%
Stage of its companies
Venture, series not stated 86%Series A 14%
Its companies, the freshest money firstAll 7 investments
AntithesisSeries A $105M · 10 mo ago · led a round · 20 roles
VismaVenture round $4.3B · 2 yr ago · 4 roles
VismaVenture round $4.3B · 2 yr ago
VismaVenture round $4.3B · 2 yr ago
VismaVenture round $4.3B · 2 yr ago
VismaVenture round $4.3B · 2 yr ago
VismaVenture round $4.3B · 2 yr ago
Co-investorscompanies they hold together
Hg 
Altaroc 
ICG 
TPG Similar investorstheir companies share markets and countries
Semente Negócios
Equal Ventures Management, LLC
Contour Venture Partners
Arrowroot CapitalSources: 10 rounds in the press that name it
How Jane Street hires
Truth index
B 75/100
Median time to fill
141 days
Ghost roles
34%
Stale roles
0%
Reposted roles
0%
Jane Street scores B on the Alion truth index (A is best, E worst), measured over 170 open roles re-checked against its own hiring board: 34% look like ghost listings, 0% have gone stale and 0% are the same role posted again. Its roles close in a median of 141 days. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Visa sponsorship
- United Kingdom · Licensed UK visa sponsor (Senior or Specialist Worker, Skilled Worker)
Overview
Jane Street (Jane Street Capital) is a quantitative trading firm and liquidity provider specializing in automated market making, algorithmic execution, and high-frequency trading. Headquartered in New York, New York, the firm operates major regional hubs in London, Hong Kong, Singapore, and Amsterdam. Its core activities involve deploying proprietary quantitative research, machine learning models, and low-latency infrastructure to facilitate continuous trading across exchange-traded funds (ETFs), equities, options, fixed income, futures, and derivative products across more than 200 trading venues globally.
News
A study of sequence weighting at scale
TL;DR: We study the scaling laws of data weighting across in-house and open-weight LMs, finding non-monotonic behavior across scales. We vary the weight assi...
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Report
Trustworthy Human-AI Collaboration in a Live Type-Theoretic Computational Commons :: Jane Street
Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving.
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Report
Notes on Naming
I've been thinking about naming recently, specifically the naming of new systems. It's tempting to think of naming as trivial, but it really does matter. In ...
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Report
Using OxCaml to implement type-safe reference counting between OCaml and Python
Jane Street is known for being an OCaml shop, but for years now Python has been our second major programming language, acting as the primary tool for data an...
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Report
Formal methods and the future of programming
I've been telling people for the last 25 years that Jane Street as an organization was just not interested in formal methods.
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Report
Formal methods and the future of programming
I've been telling people for the last 25 years that Jane Street as an organization was just not interested in formal methods.
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Report
The Algorithm for Precision Medicine :: Jane Street
Jane Street is a quantitative trading firm and liquidity provider with a unique focus on technology and collaborative problem solving.
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Report
strace-ui, Bonsai_term, and the TUI renaissance
We've always found strace useful but somewhat hard to work with. Its output is often inscrutable, it's hard to follow subprocesses or threads, and if you wan...
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Tech stack
Technologies named in job postings at Jane Street over the last 12 months, by layer, with the share of postings for each.
Technologies in use
45
Postings analysed
56
Stack modernity
68/100AI adopter
Languages
Python34%
OCaml25%
PowerShell18%
Bash7%
Frameworks & libraries
NCCL2%
PyTorch2%
TensorFlow2%
cuDNN2%
Cloud & platforms
Windows14%
Linux13%
.NET4%
Active Directory4%
AI & ML
ChatGPT4%
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Full Jane Street tech stack
45 technologies · by team · pay by technology · changes · similar stacks
Growth
Hiring Momentum
65/100
Growing
Open positions
170
10 opened / 13 closed in 30 days
Median time-to-fill
103 days
faster than 13% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
Industrial Engineering
17% ▼
Operations
15% ▲
Legal
8% ▼
Support
7% ▼
Finance
7% ▲
HR
7% ▲
Actively hiring for Operations (+3 in 30 days)
Activity Timeline
Added Platform Engineering to stack
Oct 2026
Added Formal Verification to stack
Sep 2026
Added DNS to stack
Sep 2026
Added Unix to stack
Sep 2026
Added PKI to stack
Sep 2026
Added Microsoft Office to stack
Sep 2026
Added Linux to stack
Sep 2026
Added Active Directory to stack
Sep 2026
Added OSPF to stack
Sep 2026
Added BGP to stack
Sep 2026
Added Windows to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
12
Hiring now
6
Countries
6
Busiest office
New York
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Headquarters
Builds here
Office with open vacancies
No open vacancies right now Tap a pin for the office
New York
United States
HQ
New York, NY 10281
75 open roles 24 posted in 90 days 33% engineering 1% remote 1000-5000 est. staff
hires for Industrial Engineering, HR, Operations
New York, NY 10281
London
United Kingdom
Engineering / R&D
London
43 open roles 18 posted in 90 days 51% engineering 2% remote 500-1000 est. staff
hires for Industrial Engineering, Security, AI/ML
Hong Kong
Hong Kong
Engineering / R&D
Hong Kong
41 open roles 13 posted in 90 days 34% engineering 500-1000 est. staff
hires for Industrial Engineering, Operations, Security
10th Floor, Chater House
Singapore
Singapore
Engineering / R&D
Singapore 018916
13 open roles 3 posted in 90 days 54% engineering 50-200 est. staff
hires for Networking, Security, Operations
Singapore 018916
Chicago
United States
Engineering / R&D
Chicago
1 open roles 1 posted in 90 days 10-50 est. staff
hires for Operations
Austin
United States
Engineering / R&D
Austin
1 open roles 1 posted in 90 days 10-50 est. staff
hires for Operations
San Francisco
United States
Regional office
San Francisco
Mumbai
India
Regional office
Mumbai
Amsterdam
Netherlands
Regional office
Amsterdam
Central
United States
Regional office
8 Connaught Rd. Central
8 Connaught Rd. Central
Philadelphia
United States
Regional office
Philadelphia
Jobs
In office • Hong Kong
CUDA Toolkit
CUDA
Triton
NCCL
InfiniBand
NVLink
cuDNN
CUTLASS
Machine Learning
Frontend
Sass
Apply
In office • Hong Kong
Python
AI Agents
Recommender Systems
Machine Learning
Apply
In office • London
Python
AI Agents
Recommender Systems
Machine Learning
Apply
≈ $148k – $324k per year (Estimated) • In office • New York
Python
AI Agents
Recommender Systems
Machine Learning
Apply
≈ $120k – $260k per year (Estimated) • In office • PhD • New York
Python
Time Series Forecasting
Machine Learning
Apply
≈ HK$35k – HK$103k per month (Estimated) • In office • Internship • Hong Kong
Threat Modeling
Apply
≈ $122k – $279k per year (Estimated) • In office • Internship • New York
Threat Modeling
Apply
≈ $72k – $163k per year (Estimated) • In office • Bachelor's Degree • London
Threat Modeling
Apply
≈ $48k – $91k per year (Estimated) • In office • 5+ years exp • London
PowerShell
Windows
Cybersecurity
Active Directory
Apply
≈ $58k – $133k per year (Estimated) • Remote (United Kingdom) • London
Python
PowerShell
Platform Engineering
Windows
Cybersecurity
PKI
Apply
≈ $126k – $266k per year (Estimated) • In office • Bachelor's Degree • New York
Jira
Apply
≈ $72k – $118k per year (Estimated) • In office • 6+ years exp • London
Adobe Photoshop
Apply
Financials
Total raised
$16.1B
Latest round
Venture - Series Unknown
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Venture - Series Unknown | 2026 | $16.1B | Details |