Senior/Principal Product Manager, API & Integration Platform

Get to Know Us

At Horizon3.ai, we’re redefining the offensive cybersecurity space—and we need a forward-thinking, technically fluent Senior Product Manager to lead our API platform, integration strategy, and MCP server development. This high-impact role is central to enabling scalable integrations, extensibility, and automation across our product ecosystem.

You’ll work closely with engineering, platform architects, and customers to shape our developer-facing APIs, internal service interactions, and third-party integrations. This is a pivotal opportunity for a product leader who thrives at the intersection of developer experience, system architecture, and platform product strategy.

We’re looking for someone with a builder’s mindset, a strong technical foundation, and a track record of driving cross-functional execution. If you’ve led platform/API initiatives, owned integration roadmaps, or shipped complex backend products in a high-growth SaaS environment, we want to hear from you.

What You’ll Do

• Own the API & Integration Platform Vision – Define and drive the strategy for our external and internal APIs, ensuring scalability, security, and ease of use for both internal teams and external developers.

• Drive MCP Server Product Development – Partner with engineering to evolve our Model Context Protocol (MCP) server—focusing on orchestration, performance, and extensibility.

• Lead Integration Strategy – Build and manage a portfolio of third-party integrations (e.g., ticketing, SIEMs, EDRs, SOARs, identity providers). Prioritize based on customer needs and strategic value.

• Define Developer Experience – Champion a best-in-class developer journey. Ensure our API documentation, SDKs, authentication flows, and sandbox environments are intuitive and robust.

• Work Cross-Functionally – Collaborate with Security Research, Engineering, and Customer Success to translate technical requirements into scalable platform features.

• Translate Complexity into Roadmaps – Break down complex technical concepts into actionable plans. Prioritize and sequence platform enhancements to support both customer use cases and internal product needs.

• Enable Internal Product Teams – Ensure APIs and internal services are reusable, well-documented, and built for scale. Partner closely with other product managers to drive alignment and platform consistency.

What We’re Looking For

• You’ve worked at high-growth SaaS startups and know how to move fast without breaking things.

• You’ve led API platform or integration product efforts at a SaaS or cybersecurity company.

• You’re comfortable owning deeply technical products—APIs, servers, internal microservices—and working with architects and senior engineers.

• You’ve driven adoption of APIs, SDKs, or integration frameworks by both internal developers and external partners.

• You think in systems and platforms, not just features.

• You balance user needs, technical feasibility, and strategic impact in every decision.

• You excel at cross-functional collaboration and aligning product vision with technical execution.

• You’re comfortable getting into the weeds—whether it’s in spreadsheets, dashboards, or user flows—and just as comfortable zooming out to set direction.

Required Background

• 6+ years of experience in product management or technical product roles, ideally in B2B SaaS or cybersecurity

• Demonstrated ownership of API platforms, developer tooling, or integration ecosystems

• Strong technical fluency—comfortable working with RESTful APIs, authentication standards (OAuth, SAML), and backend architectures

• Experience partnering with platform, infrastructure, or backend teams

• Familiarity with Agile methodologies and product delivery in complex technical environments

Bonus Points

• Prior hands-on development experience or a CS/engineering degree

• Experience with agentic AI workflows and tools

• Exposure to event-driven architecture, service orchestration, or middleware products

• Background in cybersecurity, IT automation, or infrastructure tooling

• Experience with developer platform metrics, SDK adoption, and community engagement

Location & Travel Requirements

• Preferred location: San Francisco Bay Area, New York

• Up to 15% travel required

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: $200,000 - $285,000 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, hair length 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.