Senior HR Business Partner

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean fusion power to combat climate change. Join us in powering a better world with inertial fusion!

This is a full-time, onsite role based at our headquarters in Denver, CO.

As a Senior HR Business Partner , you will serve as a trusted advisor to managers and leaders across Xcimer, helping build high-performing teams, develop organizational capabilities, and align people strategies with business objectives. You will partner closely with leadership to support talent planning, organizational effectiveness, performance management, employee relations, and change management as we continue to rapidly scale.

This role requires a well-rounded HR professional who combines strong HR fundamentals with business acumen, sound judgment, and the ability to influence and coach leaders at all levels. You will help managers navigate complex people challenges, identify opportunities to improve team effectiveness, and implement programs and initiatives that support employee development, engagement, and organizational growth.

We are looking for a proactive, collaborative, and solutions-oriented HR professional who thrives in a fast-paced, evolving environment and is passionate about helping leaders and employees succeed.