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Administrative Assistant

Commonwealth Fusion Systems

Job Location:

Devens, MA - USA

Yearly Salary: $ 70000 - 120000

Posted: 30 August 2026 (3 hours ago)

Application Deadline: 27 November 2026

Vacancies: 1 Vacancy

Job Summary

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 were designing and building commercially viable fusion power plants. And were working with policymakers suppliers and many others to build the energy industry of the future.

Were in the best position to make it happen. Since 2018 weve raised $4 billion of capital making us the largest and leading fusion company in the world.

Now were looking for more thinkers doers builders and makers to join us. People wholl bring new perspectives solve tough problems and thrive as part of a team.

If thats 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 youll 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 were looking for:

High School Diploma / GED required; Associate or Bachelors 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

$70000 - $120000 a year

Salary range for this full-time position equity benefits.The actual salary will depend on level location qualifications and experience. The range displayed on each job posting reflects new hire salaries for the position across all US locations. Benefits include:

Competitive compensation with equity

13 Company-wide Holidays

Flexible vacation days

10 sick days

Generous parental leave policy

Health dental and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

#LI-Onsite

At CFS we excel in fast-paced environments driven by our values of integrity execution impact and self-critique. As we grow were 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.

Required Experience:

Junior IC

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