Administrative Assistant

Commonwealth Fusion Systems

$70K — $120K *
Business Services
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 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
  • Ability to manage competing schedules and operational requests with accuracy
  • Proven reliability and strong work ethic with discretion in handling administrative matters
  • Strong proficiency in Google Workspace (GCal, Docs, Sheets)
  • Exceptional written and verbal communication skills
  • Attention to detail and commitment to high-quality work
  • Excellent customer-service mindset and collaborative skills across teams

Responsibilities

  • Provide proactive administrative support to non-ELT leaders and team members
  • Oversee conference room scheduling and monitor utilization
  • Coordinate team catering for onsite meetings and events
  • Greet visitors and maintain a secure front desk presence
  • Facilitate information flow across teams and direct inquiries
  • Support special projects and team activities as assigned

Benefits

  • 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
Full Job Description
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


$70,000 - $120,000 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, we're eager to bring on mission-driven folks who offer diverse perspectives and fresh ways to tackle challenges.

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