Senior Engineering Manager, Integrations & APIs

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

We’re looking for a Senior Engineering Manager to lead our Integrations & API team — a high-impact group within our Application Platform team whose mandate is critical to the scalability of our platform. This nascent team will help push our existing APIs to be first-class citizens, building the consistent, well-documented foundation that powers every integration and allows customers to build their own agentic workflows atop our platform. No less critical, this team will build strategic integrations to unlock critical new features atop mountains of complimentary data from users own systems. We want to meet users where they are at with their current tooling, and use the products they already have in their ecosystem to drive the find-fix-verify loop with greater accuracy and less downtime.

This is a technical leadership role focused on driving excellence in fundamental capabilities - our API platform and our integrations platform. We expect this individual to help drive long term sustainable strategy around integrations- evaluate the existing market, partner closely with product to understand customer needs, and execute on targeted short term plays which feed into the longer product vision.

This is an ideal opportunity for someone who has lived and breathed Integrations in a past life, and understands the power that a scalable API platform can allow for an entire class of power-users.

What You’ll Bring

• Experience leading teams of 6+ cross functional software engineers.

• Proven experience leading highly technical backend or platform engineering teams — ideally within a SaaS, cybersecurity, or cloud-scale environment.

• Experience leading initiatives around API platforms, headless customer experiences, or agent-based customer flows.

• Experience with an integrations platform, particularly with an eye to build speed for new integrations.

• You think in terms of platforms and systems, not just features, and you balance security, usability, and scalability in every decision.

• Experience with common security schemas/frameworks (OCSF, MITRE, ECS)

• Experience integrating with security vendors (Crowdstrike, Splunk, Palo Alto)

• Experience working with common ticketing vendors (Jira, ServiceNow)

• Background in cybersecurity, identity management, or enterprise SaaS security features.

• Experiencing managing tech leads or other managers.

Required Tech Stack Experience

• Strong background in backend engineering and/or platform engineering.

• Expertise in at least one object-oriented programming language (Python strongly preferred; open to Go, Java, C++, or similar).

• Familiarity with ETL pipelines, data flow orchestration, and database performance optimization (PostgreSQL, Neo4j, or equivalent).

• Understanding of cloud infrastructure and services (AWS, Azure, or GCP), including networking, compute, and storage fundamentals.

• Exposure to infrastructure-as-code and deployment concepts (e.g., Terraform, Docker, Kubernetes, CI/CD tooling).

• Experience with observability and monitoring stacks (Prometheus, Grafana, OpenTelemetry, etc.).

• Understanding of security and reliability best practices, especially in a multi-tenant SaaS or cybersecurity environment.

• Knowledge of Linux-based systems (Ubuntu, Kali, etc.) and modern development practices for distributed environments.

Travel Required

We are a fully remote company, and this job may require up to 10% 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: All full-time roles are eligible for an equity package in the form of stock options.

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, equity and benefits. Our benefits include health, vision & dental insurance 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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