Antigen logo
Antigen logo

Antigen

antigen.sh
antigen.sh • San Francisco • 11-50 employees • Startup • New
San Francisco • 11-50 employees • Startup • New
Actively hiring
Cybersecurity
Artificial Intelligence
Penetration Testing
View 1 job
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Overview
Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials

Funding and backers

Team
11-50
employees, estimated range
Hiring now
1
+1 posted in 30 days
Backers
1
Y Combinator
Momentum
13/100
hiring for its size
Last sign of life
this month
a posting or a news item
Tractionpublic signals, read monthly
Web presence
top 7%
of 133.2M domains by links, Common Crawl
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator F25 accelerator
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A11-50 employees
Ⓐ fortifies you against weaponized AI by discovering and remediating exploitable attack paths.

Overview

Antigen continuously maps and exploits your attack surface, fixes confirmed vulnerabilities, and verifies every remediation with AI-powered pentesting.

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
AI Agents
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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
76/100
Scaling fast
Open positions
1
1 opened / 0 closed in 30 days
ATS activity
Every ~5 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.
Security
100% ▲
Activity Timeline
Added AI Agents to stack Sep 2026

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
1 open roles 1 posted in 90 days 100% engineering 10-50 est. staff $220k Avg Salary
hires for Security
seen since Sep 2026

Jobs

$150k – $220k per year • Equity 0.5–1% • In office • Full-Time • 1+ year exp • San Francisco
AI Agents
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