Staff People Partner, EPD

About the role

Get to Know Us Horizon3 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.

Responsibilities

• Partnering with Engineering, Product, Design, Security Research, and Data leaders to scale high-performing organizations while supporting delivery of an ambitious product roadmap.
• Advising leaders on organizational design, workforce planning, and resourcing strategies to ensure teams are structured to meet evolving business and product priorities.
• Coaching managers and leaders through the challenges of hypergrowth, including scaling teams, leading through change, developing talent, and building strong management practices.
• Helping leaders build high-performing organizations through clear expectations, accountability, continuous feedback, and consistent performance standards.
• Partnering with Engineering leadership and Finance on headcount planning, hiring prioritization, and organizational investments aligned to roadmap delivery and business goals.
• Driving talent reviews, calibration, succession planning, and promotion discussions to build leadership bench strength and support long-term organizational growth.
• Using organizational health, engagement, attrition, and workforce data to proactively identify risks, inform decisions, and improve team effectiveness.
• Supporting leaders through organizational changes, ensuring teams remain aligned, engaged, and able to execute as the business scales.
• Accelerating the effectiveness of new managers and leaders through coaching, onboarding, and ongoing leadership development.
• Managing employee relations matters with sound judgment, balancing business objectives, employee experience, and organizational risk.
• Partnering with People Operations to build scalable people programs, processes, and manager enablement that support a rapidly growing technical organization.
• Serving as a trusted thought partner who brings data, business insight, and practical solutions to help leaders make informed people decisions and execute with confidence.

Requirements

• 7–10 years of HR Business Partner experience supporting high-growth technology organizations.
• Experience partnering with Engineering, Product, or other technical organizations through periods of rapid growth and change.
• Strong business acumen with the ability to translate business priorities into practical people strategies.
• Proven ability to influence and coach leaders at all levels using data, sound judgment, and credibility.
• Experience with organizational design, workforce planning, talent management, and performance management.
• Strong judgment in employee relations and navigating complex people situations.
• Ability to thrive in a fast-paced, ambiguous environment with a builder mindset.
• Experience supporting globally distributed teams across multiple time zones.
• Deep knowledge of HR practices, employment law, and scalable people programs.

Benefits

• Inclusive Team