Antigen
DevSecOps · Penetration Testing
1open role
2backers · Y Combinator, Multimodal Ventures
10+team · employees, estimated range
37stories in the press
Overview
Antigen continuously maps and exploits your attack surface, fixes confirmed vulnerabilities, and verifies every remediation with AI-powered pentesting.
Funding and backers
Team
11-50
employees, estimated range
Hiring now
1
open roles
Backers
2
Y Combinator, Multimodal Ventures
Momentum
15/100
in the news
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Oct 2025
Went through Y Combinator
Tractionpublic signals, read monthly
Web presence
top 7%
of 133.2M domains by links, Common Crawl
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
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Jobs
$150k – $220k per year · Equity 0.5–1% · In office · Full-Time · 1+ year exp · San Francisco
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Salary insights
Compensation ranges based on this company's open jobs
Median
$220k
Typical range
$220k
Open positions
1
1
Jobs
Junior
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Junior | 1 | $220k | $220k |
Highest paying role
Security Researcher
$220k
Normalized to USD per year
Growth
Hiring Momentum
28/100
Slowing
Open positions
1
0 opened / 0 closed in 30 days
ATS activity
Every ~5 hours
Today
Hiring Dynamics
0%
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.
Security
100% ▼
Tech stack
Technologies named in job postings at Antigen over the last 12 months, by layer, with the share of postings for each.
Technologies in use
1
Postings analysed
1
Stack modernity
85/100
Practices & domains
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Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors

Multimodal VenturesVia a fund

Y CombinatorVia a fund
6310 portfolio companies
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
IDEXX Expands Faecal Dx Antigen Testing Platform in the United Kingdom with Taeniid Tapeworm Detection
WESTBROOK, Maine, September 17, 2026--IDEXX expands Faecal Dx antigen testing platform in the United Kingdom with taeniid tapeworm detection for broader intestinal parasite screening.
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Report
Antigen specificity of clonally enriched CD8+ T cells in multiple sclerosis
CD8+ T cells are the dominant clonally expanded lymphocyte population in multiple sclerosis (MS) lesions but their clonal identity, function and antigen specificity are not well understood. A comprehensive single-cell RNA-sequencing and T cell receptor-se
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Report
Single-cell RNA sequencing reveals that kimchi dietary intervention modulates human antigen-presenting and CD4 T cells
Kimchi, a traditional Korean fermented food, is recognized for its metabolic benefits; however, its effects on human immune function remain poorly defined. In this study, we performed single-cell RNA-seq on peripheral blood mononuclear cells from 13 overw
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Report
Should we still be using RATs to test for COVID-19? Yes, but choose wisely
New research suggests manufacturerstatements about the accuracy of COVID rapid antigen tests generally 'overstatesensitivity', but experts say it's still important to use them.
Read more
Report
Report
Show more news
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
1 open roles 1 posted in 90 days 100% engineering 10-50 est. staff $220k Avg Salary
hires for Security





