Senior Sr. Manager, People Operations

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.

About the Role

We are entering an exciting stage of growth and scale, and looking for a Senior Manager, People Operations to drive our core HR functions and global expansion efforts towards success.

This is a high impact builder role, leading a team of direct reports and driving the work. This role will build on top of a solid existing foundation - iterating on the operating model, systems, processes, and workflows that support Horizon3’s international growth strategy and increasingly global workforce. You will evolve the People Operations team and infrastructure into a scalable, well-designed function.

Our ideal candidate will have deep international employment expertise, strong cross-functional project management skills, and systems proficiency to excel in this role. You will also be a coach to our People Operations team, who will significantly impact our global workforce capability and organizational growth.

What You’ll Do

• Lead global market-entry strategy and execution by partnering with Legal, Tax, and Finance teams to evaluate and establish owned legal entities, Employer of Record (EOR) models, or contractor structures across target countries.

• Manage international EOR vendor relationships, contracts, and service level agreements, including the strategic operational transition of employees from EOR providers into direct legal entities as markets scale.

• Oversee the global HR tech stack (HRIS, ATS, global payroll, and benefits systems) to maintain accurate employee records, multi-currency capabilities, and data security standards.

• Design localized total rewards programs, including competitive compensation bands, statutory benefits, healthcare coverage, leave policies, and retirement plans tailored to specific country legislation.

• Establish standardized global employee lifecycle processes, including onboarding, role changes, mobility programs, visa sponsorships, and offboarding workflows.

• Maintain HR policies, operational procedures, and employee handbooks localized to regional labor laws and data privacy regulations such as GDPR.

• Analyze core workforce analytics (turnover, time-to-fill, cost of hire, retention) to guide executive decision-making and operational improvements.

• Mentor, coach, equip, and develop your team, as well as recognizing and retaining high performers.

• Explore, test, and implement AI and automation solutions with a curious & creative mindset with the goal of making People Operations more scalable, efficient, and effective.

What You’ll Bring

• Must be proficient in global HRIS platforms (e.g., Rippling), global payroll platforms, and EOR management tools (e.g., Deel).

• Must have a deep understanding of international labor law frameworks, statutory employee benefits, worker classification standards, cross-border tax considerations, and data privacy regulations.

• Must have 6+ years of experience in managing end-to-end People Operations functions, establishing new foreign legal entities, administering multi-country compensation and benefits, and leading global mobility initiatives.

• Must be knowledgeable in performance management frameworks, employee relations practices, global HR compliance reporting, and workforce metrics analysis.

Required Education & Experience:

• Bachelor’s degree in Human Resources, Business Administration, Legal Studies, or a related field (or equivalent practical experience)

• Demonstrated experience leading global HR/People Operations initiatives across multiple regions (e.g., Americas, EMEA, APAC)

• Proven experience establishing foreign legal entities and transitioning workforce models from EOR to direct employment

Location Details: United States, Eastern time (for timezone coverage), ideally in (around) one of our hubs or future hubs (NYC, D.C, Chicago)

Travel Required

We are a fully remote company, and this job may require up to 25% 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: $169,868 - $222,050 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.

• 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.

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

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