Market landscapes / AI Safety, Security & Governance / AI Red Teaming & Security Testing
White Circle
A control layer for AI applications. White Circle tests models and agents for the ways they fail before users find them, then watches and enforces their behaviour once they are live.
AI Red Teaming & Security Testingalso: LLM & Agent Observability11-50 peoplewhitecircle.com ↗
Updated 12 October 2026
Hiring now
From White Circle's own jobs board, checked every week.
Building its first sales team. It is advertising for its first account executive, go-to-market engineer and events lead, the hires a company makes when it starts selling properly.
With a recruiter and a talent lead on the list, it is preparing to hire at a faster pace.
Where the roles are
Against its sector
White Circle has more open roles than any other company in AI Red Teaming & Security Testing. 9 of the 21 active companies in this sub-sector are advertising roles.
Funding
White Circle announced an $11 million seed round in May 2026.
Source: published announcement
Who White Circle competes with
The other active companies we file under AI Red Teaming & Security Testing, sorted by how much they are hiring.
Where this fits
Attacking an AI system deliberately, to find what it will do wrong before a customer does. Of everything in this theme it is closest to traditional penetration testing, so it sells into a security budget that already exists rather than one that has to be created first.
We track hiring and team changes across all 186 companies in AI Safety, Security & Governance.
Our talent report for this sector shows how White Circle's team compares with its competitors.
What is in it:
- Every company's team size, side by side, grouped by sub-sector
- Who grew their team over the last year, and by how much
- Who is losing people: attrition for each company, against the sector average
- Who is hiring right now, and how many open roles each has
I am Ben Jackson. I map this market, and I hire the commercial teams inside it: sales, marketing, product and delivery.
If you are building a team at a company like White Circle, want to work at one, or think White Circle is filed in the wrong place, put 20 minutes in my diary.
Book 20 minutes with Ben →