Commonwealth Fusion Systems is on a mission to deliver the urgent transition to fusion energy. Combining decades of research, top talent, and new technologies, we're designing and building commercially viable fusion power plants. And working with policymakers and suppliers to build the energy industry of the future. We're in the best position to make it happen. Since 2018, we've raised nearly $3 billion in capital, making us the largest and leading private fusion company in the world. Now we're looking for more thinkers, doers, builders, and makers to join us. People who'll bring new perspectives, solve tough problems, and thrive as part of a team. If that's you and this role fits, we want to hear from you. Join the power movement as a Senior I&C Commissioning Test Engineer. The Senior I&C Commissioning Test Engineer is responsible for collaboratively developing, driving and owning large systems of SPARC Commissioning activities through First Plasma. They will guide junior team members, as well as work with multidisciplinary teams of engineers and technicians in support of critical company milestones. They will participate as a strategic partner in Commissioning team projects, helping align department goals and objectives to larger company goals, while acting as a Subject Matter Expert and mentoring junior employees. They will work collaboratively with manufacturing, procurement, assembly, and other SPARC teams to achieve these goals.