The Role
Provides administrative and office operations support to leaders and business teams. Responsibilities include scheduling meetings and travel, managing conference rooms, coordinating catering and vendors, staffing the front desk, greeting visitors, answering operational questions, facilitating communication, and supporting special projects. The role requires strong organization, discretion, communication, customer service, attention to detail, and comfort working in an onsite technical and industrial environment.
Summary Generated by Built In
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 Administrative Assistant
We are seeking a proactive, highly organized Administrative Assistant to join our Office Operations team. This role will provide vital administrative support to non-ELT leaders and broader business teams, serving as an operational pillar across our facilities. The ideal candidate brings structure, efficiency, and a welcoming presence to the day-to-day office environment. From overseeing conference room availability and team catering to staffing front desk coverage; you will anticipate operational needs, solve logistical challenges, and keep our teams coordinated and focused.
What you'll do:
- 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
What we’re looking for:
- 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
Bonus points for:
- 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
Must-have Requirements:
- 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
#LI-Onsite
At CFS, we excel in fast-paced environments, driven by our values of integrity, execution, impact, and self-critique. As we grow, we’re eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.
We value diversity deeply and are proud to be an equal opportunity employer by choice. We consider all qualified applicants equally, regardless of race, color, national origin, ancestry, citizenship status, protected veteran status, religion, physical or mental disability, marital status, sex, sexual orientation, gender identity or expression, age, or any other basis protected by law.
This role requires compliance with U.S. laws concerning the export of controlled or protected technologies or information (collectively, “Export Control Laws"). Any offer of employment will be contingent on the need for compliance with such Export Control Laws.
Skills Required
- High School Diploma or GED
- Associate or Bachelor's degree, or equivalent work experience
- 2-4 years of experience in administrative support, front desk operations, or office coordination
- Ability to manage competing schedules and operational requests accurately
- Reliability, strong work ethic, and discretion with administrative matters
- Strong proficiency with Google Workspace, including Google Calendar, Docs, and Sheets
- Exceptional written and verbal communication skills
- Strong attention to detail and commitment to high-quality work
- Customer-service mindset and ability to collaborate across teams
- Ability to perform stooping, climbing, typing, standing, and extended sitting
- Dedication to safety around industrial hazards, including heat, cold, noise, fumes, strong magnets, lead, high voltage, and cryogenics
- Willingness to travel or work occasional nights, weekends, or on-call shifts
- Experience managing catering orders, vendor communications, or event logistics
- Experience in a fast-paced R&D, engineering, or high-growth technical environment
- Familiarity with badging systems, visitor management tools, or facilities workflows
- Familiarity with Slack, Zoom, Jira, and Confluence
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The Company
What We Do
Commonwealth Fusion Systems (CFS) has the fastest, lowest cost path to commercial fusion energy. CFS is collaborating with MIT to leverage decades of research combined with new groundbreaking high-temperature superconducting (HTS) magnet technology. HTS magnets will enable compact fusion power plants that can be constructed faster and at lower cost. CFS is now building SPARC, the world's first commercially relevant, net energy fusion demonstration device. SPARC will pave the way for the first fusion power plant, ARC, that will produce power on the grid. The ultimate mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. CFS has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by the world’s leading investors, CFS is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. If you are interested in joining our team, check out cfs.energy/careers for more information.
