About Clockwork Systems

Clockwork.io – Software Driven Fabrics to increase GPU cluster utilization

Clockwork Systems was founded by Stanford researchers and veteran systems engineers who share a vision for redefining the foundations of distributed computing. As AI workloads grow increasingly complex, traditional infrastructure struggles to meet the demands of performance, reliability, and precise coordination. Clockwork is pioneering a software-driven approach to AI fabrics by delivering cross-stack observability to catch and quickly resolve problems, workload fault tolerance to keep jobs running through failures, and performance acceleration that dynamically routes and paces traffic to avoid congestion.

To learn more, visit www.clockwork.io.

About Clockwork Systems

Clockwork.io – Software Driven Fabrics to increase GPU cluster utilization

To learn more, visit www.clockwork.io.

About the Role

As our Senior HR Manager, you'll be the cornerstone of Clockwork's people function. This is a high-impact, hands-on role for someone who thrives in the builder phase: you'll own the full HR lifecycle, elevate our people programs, and serve as a trusted partner to leadership and employees alike. You'll work closely with our executive team to shape the culture, policies, and infrastructure that will carry us through our next phase of growth — including our teams in the U.S. and UK.

What You'll Do

People Operations

Own end-to-end HR operations: onboarding, offboarding, employee lifecycle management, and HRIS administration.
Partner with our PEO on payroll, benefits administration, and HR compliance.
Serve as the primary point of contact for employee relations, resolving issues with empathy, fairness, and good judgment.

Programs & Policy

Design, implement, and continuously improve HR policies, employee handbooks, and operational processes that scale with the company.
Lead compensation benchmarking, benefits strategy, and rewards programs to keep Clockwork competitive in the AI/infrastructure talent market.
Build and deliver onboarding, training, and manager development programs that reinforce our values and accelerate employee effectiveness.

Compliance & Legal

Ensure compliance with federal, California, and UK employment laws and regulations.
Oversee employment-based immigration programs (H-1B, green cards, etc.) in partnership with outside counsel.
Proactively identify compliance risks and implement controls before they become problems.

Strategic Partnership

Partner with leadership on workforce planning, org design, and headcount strategy as we scale.
Track and report on people metrics (attrition, engagement, hiring velocity) and surface actionable insights.
Support our UK employees with region-appropriate HR programs and compliance requirements.
Contribute to culture-building initiatives, DEI programs, and employee engagement.

What We're Looking For

8–10+ years of progressive HR experience, with meaningful time in high-growth startup or scale-up environments.
Demonstrated ability to build HR programs from scratch — not just maintain existing ones.
Deep knowledge of California and U.S. employment law; familiarity with UK employment law is a strong plus.
Hands-on experience with compensation benchmarking, benefits administration, employee relations, performance management, and onboarding.
Familiarity with employment-based immigration processes (H-1B, PERM, etc.).
Experience working with PEOs and HRIS systems (e.g., Rippling, Gusto, BambooHR, or similar).