Open roles at Horizon3.ai
Latest Horizon3.ai Signals
What they do
Horizon3.ai has raised $250 million in a Series E funding round, achieving a valuation of over $2 billion. The funds will enhance its sales operations and facilitate expansion into Australia and Singapore. This follows a Series D round in June 2025 at a valuation of $650 million.
Why it matters
Horizon3.ai has developed the NodeZero platform, which autonomously conducts penetration tests against live production systems without causing disruptions. By simulating real-world attack paths, it identifies vulnerabilities and provides remediation guidance, effectively acting as a proactive defense mechanism against cyber threats.
Traction
NodeZero is currently utilized by over 6,500 organizations, a significant increase from 3,000 at the time of the Series D. The company has achieved a remarkable 120% year-over-year growth in annual recurring revenue and has conducted over 300,000 pentests, establishing a robust dataset that enhances its competitive edge.
Where the market is going
Horizon3.ai is positioned to disrupt traditional cybersecurity methods dominated by legacy players like FireEye and McAfee by leveraging AI-driven autonomous testing. The shift towards AI vs. AI in cybersecurity is critical as organizations face increasingly sophisticated threats, making Horizon3.ai's innovative approach essential for modern defense strategies.
Why Horizon3.ai is hiring
Horizon3.ai closed a $250M funding round in August 2026. It currently has 134 open roles, 73 of them posted in the last 30 days, with hiring concentrated in Amsterdam, Washington and Singapore. Companies tend to grow headcount fastest in the months after a round, so now is a good time to apply.
Teams hiring
Where Horizon3.ai hires
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Horizon3.ai jobs: common questions
Is Horizon3.ai hiring?
Yes. Horizon3.ai has 134 open roles on SuperAIJobs right now, including 73 posted in the last 30 days. The list is refreshed daily from Horizon3.ai’s own careers site.
Where are Horizon3.ai jobs located?
Most open roles at Horizon3.ai are in Amsterdam, Washington, Singapore, Chicago and San Francisco. 77 roles are listed as remote or remote-friendly.
Does Horizon3.ai hire remotely?
Yes — 77 of Horizon3.ai’s 134 open roles mention remote work. Check each listing for the countries or time zones it covers.
How much has Horizon3.ai raised?
The latest round we track is a $250M funding round in August 2026. See the full deal history on MapCo.
What does Horizon3.ai do?
Horizon3.ai has developed the NodeZero platform, which autonomously conducts penetration tests against live production systems without causing disruptions.
How do I apply for a job at Horizon3.ai?
Every role on this page links straight to Horizon3.ai’s own application page, so you apply directly — SuperAIJobs never sits in between.