Senior HR Business Partner, EPD

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. They are seeking an experienced HR Business Partner to help scale high-performing teams and support organizational growth through strategic HR initiatives.

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