---
title: 'Director of Engineering, Threat Research at Horizon3 AI'
canonical: 'https://feeny.ai/job/director-of-engineering-threat-research-horizon3-ai-united-states-0fsq2qg04cee'
type: 'job'
last_seen: '2026-11-07'
---

# Director of Engineering, Threat Research at Horizon3 AI

- **Company:** [Horizon3 AI](https://feeny.ai/companies/horizon3-ai)
- **Location:** United States
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-11-06
- **Last confirmed live:** 2026-11-07
- **Apply:** https://jobs.ashbyhq.com/horizon3ai/1437d4b1-69c6-411f-9083-407e9974e119

## Job description

Get to Know Us Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs. We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn it alls, committed to a culture of respect, collaboration, ownership, and results.

## What You’ll Do

As Director of Engineering, Threat Research, you’ll lead the engineering teams behind NodeZero Rapid Response and Threat Hunting products. Rapid Response turns emerging vulnerability and threat signals into fast, safe, customer-specific validation, helping customers understand what is exploitable in their environments and what to do next. Threat Hunting helps customers investigate whether the attack paths NodeZero discovered were already used: who got in, where they moved, and what they did. You’ll own the engineering strategy, execution, and organizational health of both teams, while partnering closely with Product, Engineering, and customer-facing groups. You’ll also build a follow-the-sun vulnerability research capability for Rapid Response, with sub-teams in Europe and Asia, creating durable 24/7 coverage without sacrificing research rigor, production safety, or team health. This is a people and portfolio leadership role. You’ll maintain enough technical depth to shape direction, raise quality, and unblock leaders while enabling managers and senior technical contributors to own implementation. Location: Remote (US), leading distributed teams across the US, Europe and Asia

## Key Responsibilities

Organization Leadership & Strategy

- Lead and develop the engineering organizations for Rapid Response and Threat Hunting, setting clear ownership, goals, operating expectations, and measurable outcomes.
- Define a coherent engineering strategy and roadmap that connect customer needs, product priorities, security research, and durable 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: 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 high standards for technical rigor, accountability, collaboration, and learning.

Rapid Response & Vulnerability Research

- Lead the engineering strategy for Rapid Response, taking on competitors in the industry and building a superior experience.
- Enable your 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 located in Europe and Asia, creating continuous coverage for Rapid Response.
- Recruit and develop specialized vulnerability researchers and leaders across regions; create clear 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.

Threat Hunting

- Lead the engineering direction for NodeZero Threat Hunting, including the agent and product capabilities that help customers understand access, movement, and impact: who got in, where they went, and what they did.
- Partner with Product, Design, and technical leaders to turn threat-hunting, SOC, 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 the evidence and act on findings.
- Ensure Threat Hunting fits coherently into the NodeZero experience and customer security workflows, including appropriate APIs and integrations.

Product, Delivery & Technical Leadership

- Partner with Product and leaders across Engineering, Platform, Data, Marketing, Customer Success, Sales, and Channel to translate ambiguous 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.

## What You’ll Bring

- 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; 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; comfort operating in a fast-moving environment with ambiguity.
- Bachelor’s or Master’s degree in Computer Science, Engineering, Cybersecurity, or a related field, or equivalent practical experience.

Technical & Domain 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 CI/CD, automated testing, observability, incident response, and operational readiness.
- Ability to evaluate technical designs and establish quality controls for security-sensitive, customer-facing systems.

Bonus Qualifications

- Deep practical experience in at least one relevant discipline—such as vulnerability research, exploitability analysis, threat hunting, incident response, or detection engineering—and the
- Familiarity with SOC, 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/LLM-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.

Travel Required [Horizon3](http://Horizon3.ai) is a remote-first company, and this role may require up to 15% travel to support team, customer, and company needs.

## Perks of Horizon3

- Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.
- Growth Opportunities: Be part of a dynamic and growing team with numerous career development opportunities.
- Innovative Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.
- Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.
- Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave.

## Compensation and Values

At Horizon3, we believe that our people are our greatest asset, and our compensation philosophy reflects this core value. We are committed to fostering an environment where all employees feel valued, respected, and rewarded for their contributions. Our compensation structure is designed to be fair, competitive, and transparent, ensuring that every team member is recognized and compensated equitably across roles, levels, and locations. In accordance with various State’s transparency regulations, we provide the following salary range information for this position:

- Base salary range [or Total On-Target Compensation]: $272,425 - $320,500 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.
- Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.

You Belong Here Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status by law. Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth. We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless.

Other Duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice.

Application Note In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.

## About Horizon3 AI

## Company Overview
- **One-liner**: Horizon3.ai provides an autonomous penetration testing platform (NodeZero) that safely hacks production environments to identify and fix exploitable attack paths using AI.
- **Entity Type**: Private (Series D – latest funding round in 2026, led by Prosperity7 Ventures)
- **Headquarters**: San Francisco, California, United States (447 Battery Street, San Francisco, CA 94111)
- **Founded**: 2019
- **Founders**: Snehal Antani (Co-Founder & CEO); founded by a mix of US Special Operations, US National Security, and cybersecurity industry veterans

## Core Business
- **Primary industry**: Cybersecurity (autonomous penetration testing, vulnerability management, continuous security validation)
- **Target customers**: B2B – large enterprises, Fortune 100, government agencies (NSA, CISA), healthcare providers, financial services, manufacturing, education, public sector
- **Mission**: “Turn the map around” – using the attacker’s perspective to help enterprises prioritize defensive efforts. The company aims to shift the advantage from attackers to defenders by fighting AI with AI.

## Products & Services
- **[NodeZero®](https://horizon3.ai/)**: Autonomous penetration testing SaaS platform. Safely runs real attack techniques in production environments (no agents, no disruption). Discovers and chains exploitable vulnerabilities, misconfigurations, harvested credentials, and dangerous defaults across external, identity, on-prem, cloud, and Kubernetes attack surfaces. Also includes Active Directory password auditing and phishing impact testing. Continuously validates fixes and repeats autonomously.

## Market Standing
- **Valuation**: Not publicly disclosed
- **Key Metrics**: 
  - Annual Revenue: **$35.5M** (per LinkedIn)
  - Total Funding: **$187M** (per LinkedIn) / **$181M** (per CB Insights – conflicting reports; both cited)
  - **225,000+** production-safe tests completed
  - **5,000+** customers
- **Notable Investors/Partners**: 
  - SignalFire (lead in Seed, Series A, Series B)
  - Craft Ventures (lead Series C)
  - Prosperity7 Ventures (lead Series D – 2026)
- **Growth Signals**:
  - Ranked **#1 in Security** on the 2025 Inc. 5000 list
  - **#3 overall** on the 2025 Deloitte Technology Fast 500
  - Fast Company’s **Most Innovative Companies** (2026) – #1 in Security
  - Named to the **Fortune Cyber 60** (2023 & 2025)
  - Two-time **Black Unicorn Award** winner
  - Headcount grew **115.5% YoY** to 341 employees (LinkedIn)
  - Active job postings up **168.2% YoY**; operates in 14 countries

## Competitive Advantages
- **AI-driven autonomous testing** that learns from hundreds of thousands of tests and uses the right AI (ML, GenAI) for each problem – delivers evidence-based results with **zero hallucinations**.
- **Production-safe** – zero downtime across all production tests, trusted by the world’s most sensitive high-security environments (NSA, CISA, Fortune 10, major healthcare).
- **No agents required** – fully self-service SaaS, safe to run continuously.
- **Real attack techniques** – not a scanner; shows actual attacker paths and impact.
- **Rapid verification** – instantly confirms fixes and repeats the cycle, enabling a continuous validation loop.

## Strategic Focus
- **Continuous validation** – driving a loop of test-fix-verify-repeat autonomously.
- **Fighting AI with AI** – building NodeZero to operate at machine speed against AI-powered attacks.
- **Global expansion** – already in 14 countries, with active hiring in EMEA, APAC, and the Americas.
- **Scaling the team** – 59 active job postings (as of mid-2026), with emphasis on engineering, sales, and customer success roles.

## Why Work Here
- **Culture**: Rated **5.0/5.0 on LinkedIn** (76 reviews) with perfect scores for Culture (5.0), Career (4.9), Compensation (4.7), and Work-Life (4.6). Described as a “kick-ass organization hell bent on disrupting an industry” with a team of “motivated learn-it-alls.”
- **Work Policy**: Remote-friendly (most roles listed as remote, HQ in San Francisco, CA). Offers flexibility across time zones.
- **Notable Perks** (from Built In and LinkedIn):
  - Comprehensive healthcare (medical, dental, vision, FSA)
  - Life insurance, disability insurance
  - 401(k) with company matching
  - Equity and employee stock purchase plan
  - Generous parental leave and family medical leave
  - Performance bonuses
  - Job training, conferences, and customized development tracks
  - Promotion policies and career growth support
- **Engineering Culture**: Built by US Special Operations and National Security veterans. Emphasis on high autonomy, real-world impact, and cutting-edge AI/security work. “If you want to be part of a kick-ass organization hell bent on disrupting an industry and keeping attackers at bay, let’s talk.”

## Sources
1. [horizon3.ai – Homepage](https://horizon3.ai/)
2. [horizon3.ai – About/Team](https://horizon3.ai/about-us/)
3. [LinkedIn – Horizon3.ai Company Page](https://www.linkedin.com/company/horizon3ai)
4. [Built In – Horizon3.ai Careers & Perks](https://builtin.com/company/horizon3ai)
5. [CB Insights – Horizon3.ai Profile](https://www.cbinsights.com/company/horizon-3-ai)

## Other roles at Horizon3 AI

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- [Senior Attack Engineer, OCI](https://feeny.ai/job/senior-attack-engineer-oci-horizon3-ai-united-states-06y0k0t6a5p9) — United States
- [Staff Backend Engineer, Internal](https://feeny.ai/job/staff-backend-engineer-internal-horizon3-ai-united-states-eccvzb53mpb7) — United States
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