Ataraxis
ataraxis.ai
Actively hiring
Precision Medicine
Medical AI
As featured in
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Overview
News
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$20.4M
1 round on record
Latest round
$20.4M
Series A · Mar 2025 · 19 mo ago
Team
51-200
employees, estimated range
Hiring now
10
+1 posted in 30 days
Backers
2
AIX Ventures, Obvious Ventures
The money's age
Due for its next round
19 months since the last round · and hiring
Momentum
19/100
hiring for its size, in the news
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
May 1
Partnership Ataraxis AI and Unicancer Partner to Validate Ataraxis Breast Prognostic Tool Using Global Phase III Trial Data · FinanzNachrichten.de
Mar 30
Launched Ataraxis AI Launches Ataraxis Breast CTX, the First Predictive AI Test Estimating Individualized Chemotherapy Benefit in Breast Cancer · businesswire.com
Jan 5
Partnership Ataraxis AI and Unicancer Partner to Validate Ataraxis Breast Prognostic Tool Using Global Phase III Trial Data · YahooFinance
Mar 5, 2025
Raised a round Series A $20.4M · TechCrunch
2023
Founded
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series A | Mar 2025 | $20.4M | — | TechCrunch |
Registers and programsofficial lists and records that name the company
| Legal entity | Ataraxis AI, Inc. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Jan WitowskiExecutive Officer, DirectorSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
AIX Ventures 
Obvious Ventures Investors in similar startupsfunds that back the companies most like this one
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How Ataraxis hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Ataraxis scores B on the Alion truth index (A is best, E worst), measured over 4 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% have gone stale and 0% are the same role posted again. 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
Overview
Ataraxis AI is a medical artificial intelligence company that builds foundation models for cancer care. Its first product, Ataraxis Breast, analyses digital pathology slides and clinical data to predict recurrence risk, chemotherapy benefit and neoadjuvant treatment response for breast cancer patients, supported by research in causality, representation learning and survival analysis. The company is headquartered in New York, New York, United States.
News
Report
Ataraxis AI Publishes Landmark Studies Showing Causal AI Predicts Chemotherapy Benefit in Multiple Solid Tumors
NEW YORK, September 14, 2026--Ataraxis AI, a company building clinical AI tools to personalize cancer care, today announced scientific breakthroughs and validation results of Ataraxis's AI models.
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Report
Ataraxis AI Publishes Landmark Studies Showing Causal AI Predicts Chemotherapy Benefit in Multiple Solid Tumors
Read more
Report
Report
Ataraxis AI Launches ARC, a Large-Scale Prospective Study Linking AI Model Predictions to Real Patient Outcomes Across Oncology
Read more
Report
Ataraxis Strengthens Executive Leadership to Support Continued Growth Across the US
Boise, Idaho, July 28, 2026 (GLOBE NEWSWIRE) -- Ataraxis, a full-service HR solutions provider serving employers across 45 states, announced the...
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Report
Ataraxis AI
The Nature Index tracks the affiliations of scientific articles from high-quality publications. The research profile for Ataraxis AI reflects the research output of authors from Ataraxis AI who published articles in the 145 journals included in the Nature
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Report
Ataraxis Strengthens Executive Leadership to Support Continued Growth Across the US
The Leadership Evolution Builds on 15 Years of Growth While Positioning Ataraxis for Its Next Chapter of Service and Innovation
Read more
Report
Ataraxis AI and Unicancer Partner to Validate Ataraxis Breast Prognostic Tool Using Global Phase III Trial Data
Ataraxis AI, a frontier artificial intelligence (AI) research lab developing AI-powered tools for oncology, and Unicancer, the leading French network dedicated exclusively to cancer care and research
Read more
Report
Show more news
Tech stack
Technologies named in job postings at Ataraxis over the last 12 months, by layer, with the share of postings for each.
Technologies in use
34
Postings analysed
13
Stack modernity
74/100
Languages
Python69%
JavaScript8%
SQL8%
TypeScript8%
Frameworks & libraries
PyTorch46%
Alembic8%
Flask8%
Jest8%
Databases
PostgreSQL8%
Cloud & platforms
Hugging Face100%
OpenAI100%
Perplexity100%
GCP8%
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Full Ataraxis tech stack
34 technologies · by team · pay by technology · changes · similar stacks
Salary insights
Compensation ranges based on this company's open jobs
Median
$300k
Typical range
$210k – $300k
Open positions
9
9
Jobs
Staff
77.8%
Principal
11.1%
Architect
11.1%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Staff | 7 | $300k | $210k – $300k |
| Principal | 1 | $300k | $300k |
| Architect | 1 | $300k | $300k |
Highest paying role
Member of Technical Staff, Translational Science
$300k
Normalized to USD per year
All salaries at Ataraxis
By role, level and city, against the market · 9 jobs with pay
People
Jan Witowski
Executive Officer, Director
Krish Ramadural
Director
Rohan Ganeshananthan
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
57/100
Growing
Open positions
10
0 opened / 1 closed in 30 days
Median time-to-fill
24 days
faster than 49% 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.
AI/ML
57% ▼
HR
14% ▲
Sales
14% ▲
Customer Success
14% ▲
Activity Timeline
Added Microsoft Office to stack
Sep 2026
Added Machine Learning to stack
Sep 2026
Added Salesforce to stack
Sep 2026
Added Interpretability to stack
Sep 2026
Added GitHub to stack
Aug 2026
Added OpenAI to stack
Aug 2026
Added Hugging Face to stack
Aug 2026
Added Computer Vision to stack
Aug 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
New York
New York
United States
HQ
10 open roles 6 posted in 90 days 80% engineering 20% remote 50-200 est. staff $290k Avg Salary
hires for AI/ML, HR, Sales
Jobs
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
PyTorch
Perplexity
Self-Supervised Learning
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
PyTorch
Perplexity
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
PyTorch
Perplexity
Self-Supervised Learning
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
Perplexity
OpenAI
Hugging Face
Machine Learning
Apply
$120k – $210k per year • In office • Full-Time • Bachelor's Degree • New York
Python
Multimodal AI
PyTorch
Perplexity
Self-Supervised Learning
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
Computer Vision
PyTorch
Perplexity
Self-Supervised Learning
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
PyTorch
Perplexity
Self-Supervised Learning
OpenAI
Hugging Face
Interpretability
Machine Learning
Apply
$100k – $300k per year • In office • Full-Time • PhD • New York
Python
Multimodal AI
Perplexity
OpenAI
Hugging Face
Machine Learning
Apply
Financials
Total raised
$20.4M
Latest round
Series A
Funding rounds
1
Funding rounds
| Round | Announced | Amount | |
|---|---|---|---|
| Series A | 2025 | $20.4M | Details |