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.

Xcimer Energy is scaling from a single program into a diversified enterprise portfolio, anchored by our Inertial Fusion Energy (IFE) program — which represents the large majority of our work — and a growing Defense program with its own risk and access profile. The Head of PMO owns the vision, mandate, and operating model for Xcimer's enterprise Program Management Office: the governance, standards, tools, and talent that let every program, current and future, plan and deliver with discipline, without becoming the bottleneck to speed.

This is a hub-and-spoke model. The Head of PMO has direct accountability for the enterprise Hub — its governance, standards, tools, reporting, and staff — and a dotted-line coordination relationship with the program managers embedded in Fusion and Defense (the spokes). The Program Leads for Fusion and Defense continue to own their programs end to end and report to the Executives; the PMO's job is to make sure they, and every future program, are supported by a common, high-quality practice rather than each reinventing one.

• You build trust quickly and create alignment across program leaders, functional leaders, and the Executive, even when their priorities and operating rhythms differ.
• You know how to introduce governance and standards in a way that improves speed, clarity, and accountability — not process for its own sake.
• You bring a relentless focus on execution quality: every initiative in the portfolio has clear ownership, practical milestones, visible risk, and the follow-through to deliver.
• You are comfortable building a function from the ground up — shaping the mandate while also standing up the team, routines, and tools that make it real.
• You lead with integrity and partnership, and create an environment where program managers, technical leads, and functional partners all do their best work.