Runsybil logo
Security

Runsybil

Attack is your best defense. RunSybil is an AI-powered offensive security platform that continuously tests your applications and infrastructure for exploitable vulnerabilities by reasoning about your system the way an elite human researcher would, but across your entire stack, on every deployment.

United States· 4 rolesNew York City· 2 rolesSan Francisco· 2 roles · Hybrid

CORE INFO

$40M
Total Funding
Other / Unspecified
Round
2023
Founded

Founded in 2023 by Ari Herbert-Voss and Vlad Ionescu, RunSybil is on a mission to automate hacker intuition. We’re building Sybil: an AI-driven pentester that discovers vulnerabilities before they’re exploited. As adversaries adopt AI to increase their attack surface, we’re putting cutting-edge offensive security into the hands of defenders. Backed by strong investor support and early customer traction, our team is composed of experts from OpenAI, Meta, Mandiant, Palantir, Cruise, Trail of Bits, and Aptiv.

HIRING SIGNAL

9
Open roles on their careers page
Snapshot via live ATS poll
Net new roles in the last 90 days
Available once weekly history accrues
90-Day VelocityV2 · BACKFILL
Trend builds weekly as historical rows accrue
By Function
Breakdown of open roles
Other · 1
GTM · 2
Engineering · 6
Top Locations
Where hiring is concentrated
Remote-eligible postings counted separately
United States
4
New York City
2
San Francisco (Hybrid)
2
San Francisco / New York CIty
1
SourcesGreenhouseLeverAshbyWorkableSmartRecruitersRipplingRecruiteeFallback · Wellfound, YC Work-at-a-Startup, careers-page scrape

KEY COMPANY ANNOUNCEMENTS

Filter
4 announcements · ranked by importance
Apr 3, 2026FUNDINGForm D filing — Runsybil Corp. (CIK 0002113497)sec.gov
Mar 18, 2026FUNDINGExclusive: AI cybersecurity startup RunSybil raises $40 million in round led by Khosla Ventures | Fortunefortune.com
Mar 18, 2026FUNDINGRunSybil Raises $40M to Build the AI-Native Platform for Offensive Security | RunSybil Blogrunsybil.com
Jan 1, 2023PRESSAbout RunSybil | AI-Native Offensive Securityrunsybil.com