Senior Administrative Assistant

The Senior Administrative Assistant will provide comprehensive administrative support to our Business Support Services team, ensuring smooth day‑to‑day operations and assisting the COO in a fast‑paced, professional environment. Located at our corporate headquarters in Acton, MA.

• Serve as a central point of contact for office operations, administrative support, and visitor coordination.
• Provide direct administrative support to the COO and act as backup support for the broader administrative team.
• Review project contracts to identify potential risks and ensure proper documentation.
• Track and maintain company and individual licenses, registrations, and professional certifications.
• Support client‑related administrative processes, including setup and entry of client and project data.
• Prepare, format, and distribute communications, reports, and project deliverables.
• Coordinate logistics for internal meetings, trainings, and small onsite events.
• Maintain organized records, filing systems, and shared digital work spaces.
• Partner with Facilities, IT, and Operations to maintain a professional and efficient office environment.
• Identify and implement improvements to administrative processes and workflows.
• Provide general office support to ensure seamless day‑to‑day operations.
• Manage office supplies, including inventory, ordering, and maintaining overall office readiness.

• 3–5+ years of experience in administrative, office support, or operations roles in a professional environment.
• Demonstrated ability to manage multiple priorities and projects simultaneously.
• Strong organizational and time management skills with a proactive mindset.
• Excellent written and verbal communication skills.
• High level of professionalism, discretion, and attention to detail.
• Ability to handle confidential information with integrity.
• Proficiency in Microsoft Office (Outlook, Word, Excel, PowerPoint) and collaboration tools (Teams, SharePoint).
• Comfortable working onsite in a fast‑paced, team‑oriented environment.

• Experience supporting executive‑level leadership, ideally in a project‑based environment (e.g., engineering, consulting, construction, or technical services).
• Familiarity with ERP systems (e.g., SAP).
• Experience working with Certificates of Insurance (COIs).
• Background in contract review, paralegal work, or legal/contract administration.
• Experience coordinating meetings, visitors, and internal events.

• Base salary range: $55,000 to $65,000 per year.
• 401(k) with company match.
• Comprehensive health insurance.
• Health savings account (HSA).
• Paid time off (PTO).
• Professional development assistance.
• Employee referral program.

We are committed to equal employment opportunities for all professionals.