Administrative Assistant

Ameresco; South Carolina; On-site; USD 42,000 - 64,000; Full time

Job summary

Ameresco, Inc. seeks an Administrative Assistant for the Savannah River area to serve as a professional front-line contact, manage office operations, and support payroll and reporting tasks.

The role requires strong MS Office skills, calendar management, and the ability to handle confidential information. Five years of admin experience in industrial or professional services environments is preferred.

Qualifications

• High school diploma or equivalent required.
• Minimum of five years of administrative support experience.
• Experience in construction, engineering, manufacturing, industrial, accounting, or professional services environments preferred.

Responsibilities

• Serve as the primary contact for visitors, vendors, and government representatives.
• Answer and route calls with professionalism.
• Review, monitor, and process invoices and requisitions for approval.
• Manage office and supply inventories and forecast needs.
• Prepare, format, and distribute correspondence, reports, memos, letters, and forms.
• Assist with regular payroll submissions to Corporate.
• Maintain confidentiality and discretion in handling sensitive information.
• Provide general administrative support to the team and leadership.

Skills

Microsoft Office

Communication skills

Calendar management

Data reporting

Discretion with confidential info

Education

High school diploma or equivalent

Tools

Microsoft Dynamics 365

Excel

PowerPoint

Teams

Job description

Administrative Assistant – Savannah River

Ameresco, Inc. (NYSE: AMRC) is a leading energy infrastructure company delivering integrated solutions that provide reliable power and modernize infrastructure. Since 2000, we have served as a trusted partner to public and private sector customers across North America, the UK and Europe, delivering over $15 billion in solutions and contracting more than 5 GW of energy resources. At Ameresco, we integrate energy resources and modernize the built environment through innovative infrastructure solutions that improve reliability, optimize performance, strengthen resilience, and support long-term sustainability. Join us in building the infrastructure that powers the future. Explore opportunities to make a meaningful impact while growing your career with a company at the forefront of energy innovation.

Responsibilities

• Serve as the primary point of contact for visitors, vendors, and government representatives, ensuring a professional and welcoming experience.
• Answer and route incoming telephone calls with professionalism and excellent customer service.
• Review, monitor, and process vendor invoices and purchase requisitions for approval.
• Manage office and janitorial supply inventories by tracking stock levels, forecasting needs, placing orders, and verifying deliveries.
• Receive, sort, and distribute incoming mail, packages, and other deliveries.
• Prepare, format, and distribute correspondence, reports, memos, letters, and forms.
• Assist with the preparation, compilation, and submission of regularly scheduled reports.
• Perform weekly quality assurance reviews and submit payroll records to Corporate.
• Maintain, update, and distribute company contact lists to ensure accuracy and accessibility.
• Organize and maintain shared drive folders and files, ensuring information remains current and properly documented.
• Create, update, and analyze reports using Microsoft Dynamics 365, Excel, and PowerPoint.
• Coordinate and support multiple projects and administrative tasks, including campus errands, document delivery, badge office visits, and other operational needs.
• Develop and maintain knowledge of Department of Energy (DOE) requirements, ensuring compliance with established protocols and implementing updates as needed.
• Handle sensitive and confidential information with the highest level of discretion and professionalism.
• Provide general administrative and operational support to the team and leadership.
• Other duties as assigned.

Minimum Qualifications

• High school diploma or equivalent required.
• Minimum of five (5) years of administrative support experience, preferably within construction, engineering, manufacturing, industrial, accounting, or professional services environments.

Additional Qualifications

• Advanced proficiency with Microsoft Office Suite, including Outlook, Word, Excel, PowerPoint, and Teams.
• Strong verbal and written communication skills, with the ability to interact professionally with employees, customers, vendors, government representatives, and leadership.
• Experience scheduling and coordinating meetings, managing calendars, and supporting virtual collaboration through Microsoft Teams.
• Excellent organizational, time management, and prioritization skills, with a proven ability to meet deadlines in a fast-paced environment.
• Working knowledge of procurement, purchasing, invoicing, payroll administration, and basic accounting processes.
• Strong customer service mindset with the ability to respond promptly and effectively to changing business needs.
• Experience maintaining electronic records, shared drives, and document management systems.
• Demonstrated ability to manage multiple priorities, coordinate administrative processes, and support day-to-day office operations.
• Experience handling sensitive and confidential information with discretion and professionalism.
• High attention to detail and commitment to accuracy in reporting, recordkeeping, and administrative processes.
• Ability to adapt quickly, manage competing priorities, and work independently with minimal supervision.
• Willingness and flexibility to work additional hours when business needs require.
• Ability to review confidential US security information is required.

Benefits

Ameresco challenges the brightest, most talented, and creative individuals in the industry by providing an environment that fosters initiative and achievement. We are proud of our comprehensive and competitive employee benefits, including people-oriented insurance, investment, and incentive plans.

Equal Opportunity Employer

Ameresco is an Equal Opportunity Employer. Energy careers at Ameresco bring employees to the forefront of new energy technology with the backing of an experienced team of energy efficiency and renewable energy engineers and professionals.

Employee Perspective

"Its inspiring to work on projects that are shaping the future of energy use and to be part of a team that has tremendous experience in renewable energy systems." – Ameresco Employee