About Periodic Labs

We're an AI and physical sciences company building state-of-the-art models to accelerate breakthroughs across materials, energy, and beyond. Backed by world-class investors and growing rapidly, we operate at the pace the frontier requires. Our team brings deep expertise, genuine ownership, and an insatiable drive to push the boundaries of what's scientifically possible.

About the Role

Periodic Labs is growing fast, and we're building the people infrastructure to match. As our Head of People, you'll run the full people function and partner directly with the leadership team to build the organization that will define the next era of AI-driven scientific discovery. You'll design the systems, shape the culture, and lead the people and talent functions that make Periodic Labs a place where exceptional people do the best work of their lives.

This isn't a traditional HR leadership role. We need someone who has operated inside engineering-forward organizations, ideally in frontier AI, physical products, semiconductors, or hardware-forward startups, and who deeply understands how technical teams operate under pressure. You'll be a trusted advisor to founders and senior leaders, bringing both strategic vision and operational rigor.

What You'll Do

Run all things people related, spanning talent, HR business partnering, onboarding, performance, compensation, learning and development.

Lead and scale talent acquisition, including building the recruiting team, evolving hiring processes and infrastructure, and shaping the company’s hiring strategy as it grows.

Partner directly with the leadership team on organizational design, workforce planning, and growth strategy as the company grows through its next phase

Lead employee relations work with professionalism and sound judgment, handling sensitive situations, investigations, and executive coaching with discretion and care

Design the people systems that help our scientific and engineering teams grow, get recognized, and get paid fairly, built for how technical people actually work, not borrowed from a playbook.

Design onboarding programs that integrate new engineers and scientists quickly into the Periodic Labs culture and way of working

Shape how we scale as an organization. This isn't a traditional hierarchy-building exercise, it's figuring out how a lab-first company adds people and structure without losing what makes it work.

Use people data and analytics to surface insights and drive evidence-based decisions on headcount, attrition, engagement, and team effectiveness

You Will Thrive in This Role If You Have

15+ years of HR experience, with meaningful time in a senior people leadership role at a technology, research, or engineering-forward company

Experience building and leading a talent acquisition function, including hiring and managing recruiters, as the company scales

A background supporting teams in physical products, semiconductors, manufacturing, or hardware-forward startups. You understand the operational rhythms and talent profiles of these environments

Experience navigating the intersection of research and engineering cultures, where intellectual rigor, speed, and hands-on problem-solving coexist

Strong command of the full HR spectrum: performance management, compensation design, employee relations, organizational design, and people operations

A builder's mindset. You're comfortable in ambiguous environments where people programs are still being defined and you'll often have to create the playbook from scratch

High EQ and communication skills. You build trust quickly with engineers and scientists, and you know how to navigate difficult conversations with directness and care

Sound judgment on sensitive matters. You handle employee relations and investigations with appropriate seriousness and discretion

Data fluency: you use people analytics to diagnose issues, identify trends, and support decisions with evidence

Especially Strong Candidates May Also Have

Experience at an AI lab, deep tech company, or research institution where the talent profile is unusually specialized