Administrative Assistant

About Commonwealth Fusion Systems:

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 we're working with policymakers, suppliers, and many others to build the energy industry of the future.

We’re in the best position to make it happen. Since 2018, we’ve raised $4 billion of capital, making us the largest and leading 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 an Executive Operations Partner

We’re looking for an experienced Executive Operations Partner to join our high-performing People Operations team. This role supports multiple C-Suite executives and works alongside four other EOPs who collectively ensure the executive team is well-coordinated, informed, and focused on what matters most.

The ideal candidate thrives in a fast-moving, high-growth environment and knows how to bring structure, organization, and calm to the chaos that often comes with start-up life. You’re the type who anticipates needs before they’re spoken, stays two steps ahead, and takes pride in being known for your reliability, judgment, and professionalism.

Provide proactive administrative support to non-ELT leaders and team members, including scheduling internal/external meetings, and travel coordination

Oversee conference room scheduling across facilities, managing conflicts, monitoring utilization, and ensuring spaces are equipped for scheduled meetings

Coordinate team catering for onsite meetings, departmental events, and working lunches, including vendor management, dietary tracking, and setup/breakdown logistics

Serve as the primary front desk coverage, greeting visitors, and maintaining a secure, professional front-of-house presence

Serve as a connector across teams, helping facilitate information flow, answering routine operational inquiries, and directing team members to appropriate resources

Support special projects and team activities as assigned

High School Diploma / GED required; Associate or Bachelor’s degree preferred, or equivalent work experience

2 - 4 years of experience in administrative support, front desk operations, or office coordination roles

Demonstrated ability to manage competing schedules and operational requests with accuracy

Proven reliability, strong work ethic, and ability to handle administrative matters with discretion

Tech-savvy with strong proficiency in Google Workspace (GCal, Docs, Sheets)

Exceptional written and verbal communication skills

Strong attention to detail and commitment to high-quality work

Excellent customer-service mindset and ability to collaborate across teams

Prior experience managing team catering orders, vendor communications, or event logistics

Experience working within a fast-paced R&D, engineering, or high-growth technical environment

Familiarity with badging systems, visitor management tools, or facility operations workflow

Familiarity with tools such as Slack and Zoom, and project systems such as Jira and Confluence

Perform activities such as stooping, climbing, typing, standing, or sitting for extended periods of time

Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, and cryogenics

Willingness to travel or work required nights/weekends/on-call occasionally

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