About Function

Function Health is the AI operating system for health, designed to empower people to live 100 healthy years. We are redefining how individuals understand, measure, and improve their health — moving beyond reactive care to give people comprehensive, data-driven insight into their biology long before disease takes hold. Through advanced diagnostics, deep biomarker testing, longitudinal data, and AI-enabled insights, Function equips members with actionable intelligence to take control of both the quality and length of their lives. Our long-term ambition is bold: to make proactive, data-driven health accessible at a global scale and meaningfully impact billions of people. Function recently announced a $298M Series B and is backed by a16z, Redpoint, and other leading investors. With hundreds of employees across a remote U.S. workforce, Function is entering its next chapter of growth, scaling domestically. To power that trajectory, we are seeking a Principal HRBP for our Engineering, Product, Design, and Medical Intelligence (Data) organizations to architect the people strategy that will drive our mission forward.

The Role

We are looking for a Principal HR Business Partner to support our Technology organization, including Engineering, Product, Design, and Medical Intelligence. This role is a highly strategic individual contributor position partnering closely with senior technology leaders to build a high-performing organization during a period of rapid growth and transformation. You will be expected to challenge leaders, drive hard decisions on talent and structure, and raise the performance bar across the organization. You will work directly with leaders shaping the future of our product and technology platform. Success in this role requires strong business judgment, the ability to operate in ambiguity, and a willingness to build while scaling. This role reports to the Director, HR Business Partners, and works closely with the SVP of People and senior leadership across the company.

What You’ll Do

• Strategic partnership: Primary partner to C-suite/Executive technology leaders and their teams to shape organizational strategy, team structure, and leadership effectiveness.
• Act as a thought partner on organizational design, leadership development, talent planning, and scaling high-performing teams.
• Translate business priorities into people strategies that enable speed, clarity, and accountability.
• Build and scale: Help evolve the technology organization as the company grows through hiring, leadership development, and organizational change.
• Lead key people initiatives across performance management, talent density, leadership capability, and team effectiveness.
• Operate comfortably in a build environment where systems and processes are still evolving.
• Talent and leadership: Coach senior leaders on performance, feedback, and building elite teams.
• Support leaders through periods of rapid change including scaling restructuring talent upgrades.
• Partner closely with recruiting to attract retain exceptional talent in highly competitive markets.
• Organizational effectiveness: Drive clarity around goals performance expectations accountability.
• Help leaders diagnose organizational challenges implement solutions quickly effectively.
• Ensure leaders have tools support needed build strong teams while maintaining high standards.

What We’re Looking For

• 10+ years of HR experience with deep expertise in HR business partnering
• Experience supporting Engineering Product or other technical organizations
• Strong business acumen judgment decision-making balancing speed thoughtfulness
• Ability influence senior leaders navigate complex organizational dynamics
• Experience working in high-growth technology companies operating ambiguity rapid change environment