Partner Customer Success Manager

Horizon3.ai 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.

We’re looking for an experienced, mission-driven Partner Success Manager to join our growing team and lead the post-sales experience for our managed service partners. In this role, you’ll act as the strategic and technical advisor to MSSPs and MSPs, helping them succeed in deploying, operationalizing, and delivering value with NodeZero across their customer base. You’ll partner cross-functionally with Sales, Product, Engineering, and Support to amplify partner impact and help scale our presence in the partner ecosystem.

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• 5+ years of experience in Customer Success, Technical Account Management, Channel Management, or Partner Enablement—preferably in cybersecurity or B2B SaaS
  

• Strong understanding of MSSP/MSP business models and their delivery of security services (e.g., SOC operations, vulnerability management, red teaming)
  

• Technical fluency in cybersecurity solutions and/or experience supporting highly technical users
  

• Demonstrated success building long-term relationships with partners, managing joint success plans, and driving retention and expansion
  

• Experience supporting revenue-based goals tied to partner adoption, NRR, or managed ARR
  

• Self-starter comfortable navigating ambiguity and scaling post-sales programs from the ground up
  

• Strong presentation, training, and interpersonal skills—able to engage both technical practitioners and executive stakeholders
  

• Proficient with CS tools like Salesforce, Gainsight, JIRA, and Confluence
  

• Willingness to travel to partner sites and industry events (~10–30%)

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.

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.

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. 

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