Senior Engineering Manager

Get to Know Us

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, 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 IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and 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.

As a remote first company, we require minimum 25Mbps consumer grade broadband connection.

What You'll Do

As a Senior Manager, Engineering at Horizon3.ai, you will lead the growth and execution of critical engineering teams that power our autonomous pentesting platform, NodeZero. This manager-of-managers role involves scaling technical leadership across backend systems, offensive content, and defensive automation, while aligning closely with product and go-to-market strategy.

• Engineering Leadership Across Domains: Oversee engineering managers across multiple teams, including Application Platform (backend systems, ETL pipelines, and data flow), Proactive Offense (attack content development), or Precision Defense (defensive content and detections).

• Product-Driven Development: Partner with Product and GTM teams to drive delivery of MVPs and POCs that translate real-world security insights into scalable platform features.

• Team & Talent Growth: Hire and develop technical leaders and engineers, ensuring team structures that enable high velocity, strong ownership, and deep domain expertise.

• Cross-Functional Collaboration: Lead pods of backend, security, and infrastructure engineers, bridging offensive and defensive capabilities to drive measurable customer outcomes.

This role is key to advancing Horizon3.ai’s mission of delivering continuous, autonomous security at scale.

What You’ll Bring

• Proven experience in leading engineering teams, with a strong track record of building and launching new products in a fast-paced startup environment.

• Highly technical background with expertise in software development, cybersecurity, and B2B SaaS multi-product platforms.

• Demonstrated ability to take products from concept to market, including the development of POCs, MVPs, and GTM strategies.

• Ability to manage concurrent initiatives and use effective judgment in prioritization and time management.

• Creative, self-motivated, highly energetic, detail and results-oriented.

• Experience collaborating with designers, developers, and product managers.

• Excellent analytical/problem-solving ability.

• A positive attitude, and a desire to build accessible products for all users.

• Ability to understand the product, its logs, and troubleshoot errors.

• Strong technical documentation and communication.

• Strong ability to identify procedural gaps, implement engineering best practicies, and streamline and empower the team to build the best new products at a high velocity.

Required Tech Stack Experience

• Subject matter expert on platform design and flow

• Knowledge or awareness of the following: Multiple Operating systems (Kali, Ubuntu, Windows)

• Understanding of cloud infrastructure and their related services such as AWS, Azure, GCP

• Databases such as Neo4j and Postgresql

• Bash, ruby, Python, and LUA scripting languages

• Cyber security related certifications/designations (or equivalent experience), such as:

  • Offensive Security Certified Professional (OSCP)

  • Certified Information Systems Security Professional (CISSP)

  • GIAC Penetration Tester (GPEN)

  • Offensive Security Expert Penetration Tester (OSEP)

• Bachelor’s and/or master's degree in computer science, engineering or related field and significant relevant industry experience.

• Extensive architectural management experience.

• Exposure and/or experience with cyber security industry standards and trends.

Travel Required

We are a fully remote company, and this job may require up to 5% of travel to be successful.

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: $210,000 - $260,000 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

• Additional compensation: This role may also be eligible for an equity package (in the form of stock options). If any other compensation benefits apply, they will be discussed during the interview process.

Perks of Horizon3.ai

• 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.

• Remote Work: We are a 100% remote company. Enjoy the flexibility to work in the way that supports you and brings out your best.

• Competitive Compensation: We offer competitive salary and benefits which includes health, vision & dental care for you and your family, a flexible vacation policy, and generous parental leave.

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

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