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Horizon3.ai

Autonomous pentesting SaaS for vulnerabilities

Director of Engineering - Threat Research

Engineering LeadershipConfirmed live in the last 24 hours
Full-timeRemote in USA

About the Job

Requirements

  • Significant experience leading software engineering teams that build customer-facing products, ideally in cybersecurity or another technically complex SaaS domain.
  • Experience leading multiple teams and developing managers and senior technical leaders, with a track record of building accountable, high-performing organizations.
  • Demonstrated ability to set strategy and deliver across a portfolio, translating customer and business priorities into focused roadmaps and measurable outcomes.
  • Experience building or scaling distributed teams and operational coverage across regions and time zones, and the ability to establish sustainable 24/7 operating practices.
  • Strong technical judgment in software architecture, automation, data systems, and production operations, with the ability to engage credibly with engineers and researchers.
  • Experience taking technically complex capabilities from research, prototype, or concept through reliable production delivery and ongoing improvement.
  • A customer-oriented product mindset and sound judgment balancing innovation, speed, coverage, reliability, safety, and maintainability.
  • Ability to build effective partnerships across Engineering, Product, and customer-facing teams, resolve misalignment, and communicate decisions and risks clearly.
  • A demonstrated commitment to coaching, clear performance feedback, inclusive leadership, and healthy team culture.
  • Excellent written, verbal, and analytical communication skills, including the ability to explain complex technical choices to varied audiences.
  • A high degree of initiative, ownership, and accountability, and comfort operating in a fast-moving environment with ambiguity.
  • A bachelor's or master's degree in Computer Science, Engineering, Cybersecurity, or a related field, or equivalent practical experience.
  • Experience with production software engineering and at least one modern programming language such as Python, Go, TypeScript, or a comparable language.
  • Understanding of engineering practices such as continuous integration and continuous delivery, automated testing, observability, incident response, and operational readiness.
  • Ability to evaluate technical designs and establish quality controls for security-sensitive, customer-facing systems.

Responsibilities

  • Lead and develop the engineering organizations for Rapid Response and Threat Hunting, setting clear ownership, goals, operating expectations, and measurable outcomes.
  • Define an engineering strategy and roadmap connecting customer needs, product priorities, security research, and engineering investments across both teams.
  • Build the leadership structure required to scale, including hiring, coaching, and developing engineering managers, technical leaders, and senior individual contributors.
  • Own organizational health, including talent planning, career development, timely feedback, performance, retention, and succession planning.
  • Establish operating mechanisms that make priorities, delivery, capacity, dependencies, quality, and risks visible without adding unnecessary process.
  • Foster an inclusive, psychologically safe culture with standards for technical rigor, accountability, collaboration, and learning.
  • Lead the engineering strategy for Rapid Response and build a strong customer experience.
  • Enable teams to build automation and AI-assisted research workflows that accelerate analysis and test development while preserving expert judgment, verification, and appropriate safety controls.
  • Partner with Product, Design, and other Engineering teams to connect asset and exposure context, technology fingerprints, patch information, and other relevant signals to timely, precise customer notifications.
  • Build and lead a follow-the-sun vulnerability research organization with sub-teams in Europe and Asia to create continuous Rapid Response coverage.
  • Recruit and develop specialized vulnerability researchers and leaders across regions; create onboarding, career paths, knowledge-sharing practices, and succession plans.
  • Design the staffing model, regional ownership, handoffs, escalation paths, shared queues, and playbooks needed for dependable round-the-clock execution.
  • Lead engineering direction for NodeZero Threat Hunting, including agent and product capabilities that help customers understand access, movement, and impact.
  • Partner with Product, Design, and technical leaders to turn threat-hunting, security operations center, and incident-response needs into scalable investigation workflows and customer-facing capabilities.
  • Guide engineering approaches for using relevant security telemetry, attack context, detection logic, and data integrations to produce useful, explainable investigative results.
  • Establish quality, reliability, observability, and evaluation practices that help customers trust evidence and act on findings.
  • Ensure Threat Hunting fits coherently into the NodeZero experience and customer security workflows, including appropriate application programming interfaces and integrations.
  • Partner with Product and leaders across Engineering, Platform, Data, Marketing, Customer Success, Sales, and Channel to translate opportunities into sequenced plans with explicit outcomes and ownership.
  • Drive complex, cross-team initiatives from discovery through production, surfacing dependencies and risks early and aligning stakeholders on tradeoffs and decisions.
  • Maintain technical judgment across software architecture, research automation, data-intensive systems, product quality, and operational readiness without becoming a day-to-day decision bottleneck.
  • Ensure strong engineering practices across design, implementation, testing, release, monitoring, incident response, and learning from production issues.
  • Use customer feedback, product behavior, research outcomes, and field signals to assess impact and continuously improve the organization’s work.
  • Help teams communicate emerging-threat findings and product capabilities clearly to technical and non-technical audiences.

Desired Qualifications

  • Deep practical experience in at least one relevant discipline, such as vulnerability research, exploitability analysis, threat hunting, incident response, or detection engineering.
  • Familiarity with security operations center, threat-hunting, or incident-response workflows; security telemetry; attack techniques; and frameworks such as MITRE ATT&CK.
  • Direct leadership experience in vulnerability research, exploit development, threat intelligence, threat hunting, incident response, or security product engineering.
  • Experience building or operating AI/large language model-assisted research, analysis, or security workflows, including evaluation and verification practices.
  • Experience building follow-the-sun teams or leading global, time-sensitive operations.
  • Contributions to vulnerability research, published advisories, open-source tooling, technical publications, or conference talks.
  • Familiarity with reverse engineering or languages such as C, C++, Rust, or Assembly.
  • Experience working with cloud environments and large-scale software products.

About the Company

Horizon3.ai

Autonomous pentesting SaaS for vulnerabilities

Horizon3.ai specializes in cybersecurity by offering NodeZero, a SaaS platform for autonomous penetration testing. It lets enterprises simulate cyber-attacks on their own systems in a self-service way, without installing persistent agents, and without ongoing human intervention. The platform works by running security-focused attack simulations in production environments to uncover exploitable vulnerabilities and weak controls, delivering vulnerability assessments, threat simulations, and compliance-oriented testing through tiered subscription plans. This approach differentiates Horizon3.ai from traditional pentesting by being self-service, agentless, and safe to run in live environments, while targeting enterprise customers that must meet standards such as PCI DSS. The company aims to help organizations improve their security posture, prioritize remediation, and maintain regulatory compliance by continuously identifying and fixing weaknesses.

Company size
501-1,000
Company stage
Series E
Total funding
$437M
Headquarters
San Francisco, CA
Founded
2019

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