Autonomous pentesting platform powered by AI to validate security posture
Horizon3.ai builds an AI-driven security validation platform (NodeZero) that autonomously tests organizational defenses against exploitable attack paths. The stack reveals a sales-heavy, data-centric engineering operation: Salesforce + revenue tools dominate, while the backend (Python, Rust, Go, PostgreSQL, Neo4j) handles graph-based attack-path analysis and the data pipeline (Snowflake, Redshift, Databricks, dbt, Airflow) powers continuous testing results. Active hiring is heavily skewed toward sales (38 roles) with light engineering (7), signaling a go-to-market phase focused on channel partnerships and mid-market expansion rather than platform breadth.
Notable leadership hires: Director Engineering, Director Systems Operations
Horizon3.ai delivers continuous autonomous pentesting, framed as an alternative to manual security assessments and checkbox compliance. The platform answers whether an organization can withstand compromise by running production-safe offensive tests at scale, identifying exploitable paths, and verifying remediation. The company serves Fortune 100s, federal agencies (NSA, CISA), and healthcare providers across security operations and governance teams. With 201–500 employees, headquarters in San Francisco, and hiring across eight countries (US, Canada, Australia, Singapore, Netherlands, France, Germany, Peru), Horizon3.ai operates as a distributed, sales-driven organization pursuing enterprise and mid-market segments.
NodeZero is Horizon3.ai's autonomous pentesting engine that safely tests organizational defenses, identifies exploitable attack paths, and verifies security fixes without human intervention. It has completed over 225,000 production tests.
Backend: Python, Rust, Go, PostgreSQL, Neo4j. Data: Snowflake, Redshift, Databricks, dbt, Apache Airflow, Dagster, Fivetran, Airbyte, BigQuery. Sales: Salesforce, Outreach, Salesloft, LinkedIn Sales Navigator, ZoomSeam, Pardot. Security tools: CrowdStrike, SentinelOne, Microsoft Defender, Carbon Black.
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Horizon3.ai's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →
This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.