HR Business Partner

About The Role:

What You’ll Do:

• Design, implement, and continuously evolve core people programs, including performance reviews, onboarding, manager development, learning & development, and employee relations practices.


• Partner with leaders to translate business goals into a scalable HR roadmap that supports rapid growth.


• Use people data and insights to inform decisions, identify risks and opportunities, and improve employee performance, engagement, and retention.


• Build and sustain a strong company culture by embedding Atomic Machines’ principles into all people programs and practices.


• Lead and resolve complex employee relations matters, conducting thorough, fair, and objective investigations, partnering with our external legal firm as needed.


• Own and optimize HR systems, regularly assessing effectiveness and ensuring we maximize their value as we scale.


• Maintain deep knowledge of California employment laws and best practices, mitigating risk and ensuring compliance; partner with external legal counsel as needed.


• Lead the design and delivery of management and leadership development programs, leveraging AI-enabled tools, learning platforms, and data-driven insights to scale high-quality training and support leaders as the organization grows.

What You’ll Need:

• 5 - 10 years of progressive HR Business Partner or HR leadership experience, ideally within a fast-growing, technical startup environment; hardware experience is a plus.


• A strong passion for people - paired with the ability to balance empathy, business needs, and sound judgment.


• Proven experience designing, launching, and scaling people programs in dynamic organizations.


• A data-driven mindset with strong analytical and problem-solving skills; proficiency in using metrics and insights to guide decisions.


• A demonstrated ability to maintain a strong “pulse” on employee engagement, culture, and organizational health.


• Deep understanding of diversity, equity, inclusion, and belonging principles and how to apply them in practice.


• Strong working knowledge of California employment laws and people practices relevant to startup environments.


• Excellent communication and influencing skills, including experience partnering with and presenting to senior leaders.


• High discretion, sound judgment, and a strong ethical foundation.


• Comfort navigating ambiguity, change, and competing priorities in a rapidly evolving environment.


• Exceptional organizational skills and the ability to execute with rigor under pressure.


• Ability to work from our Emeryville or Santa Clara office at least three days per week (daily preferred).


• Bachelor’s degree in Human Resources, Business Management, or a related field.