Administrative Assistant, Office Operations — Fast-Paced & Impactful

Commonwealth Fusion Systems; Harvard (MA); On-site; USD 45,000 - 65,000; Full time

Benefits offered by this job

Equity participation

13 company-wide holidays

Flexible vacation days

10 sick days

Parental leave policy

Health, dental, and vision insurance

401(k) with employer matching

Professional growth opportunities

Team-building activities

Job summary

Commonwealth Fusion Systems is seeking an Administrative Assistant to join our Office Operations team in a fast-paced R&D environment. You will provide vital administrative support to non-ELT leaders and broader business teams, manage conference room scheduling, and coordinate catering for onsite meetings and events.

We value structure, efficiency, and a welcoming presence. The role requires strong Google Workspace skills, exceptional communication, and the ability to handle multiple tasks

Qualifications

• Provide proactive administrative support to non-ELT leaders and teams.
• Oversee conference room scheduling and ensure meeting readiness.
• Coordinate team catering and front desk coverage with discretion.
• Serve as a facilitator of information flow across departments.
• Assist with travel coordination and internal communications.
• Support special projects and events as needed.

Responsibilities

• 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

Skills

Scheduling

Front desk

Communication

Team coordination

Education

High School Diploma or GED

Associate or Bachelor's degree preferred

Tools

Google Workspace

Slack

Zoom

Jira

Confluence

Job description

Commonwealth Fusion Systems is seeking an Administrative Assistant to join our Office Operations team in a fast-paced R&D environment. You will provide vital administrative support to non-ELT leaders and broader business teams, manage conference room scheduling, and coordinate catering for onsite meetings and events.

We value structure, efficiency, and a welcoming presence. The role requires strong Google Workspace skills, exceptional communication, and the ability to handle multiple tasks