Senior Administrative Assistant - National Accounts

About the role

This position supports National Accounts by partnering with National Account Specialists and administrative staff to drive client satisfaction, revenue growth, and account expansion. The role involves daily client interaction, coordination of regional and national accounts, and ensuring the accuracy of customer deliverables.

Responsibilities

• Supervise 1–2 National Account Specialists within the program team (as needed).
• Handle day-to-day client servicing, including support, product updates, and reporting to optimize revenue and account growth.
• Schedule and prepare materials for client meetings and teleconferences; assist with organizing client events.
• Ensure consistency and accuracy of customer account deliverables.
• Stay current with industry trends and maintain strong client relationships.
• Assist with contract support, accounts collections, and business improvement initiatives.
• Produce and proofread statements of qualifications and proposals.
• Write, coordinate, design, and develop proposals and presentations for prime and teaming opportunities.
• Coordinate with clients during the pre-project/proposal phase to generate business.
• Maintain and update the client database for regional and national accounts to develop leads and target marketing.
• Track active projects for specified national clients.
• Conduct market research to evaluate marketing activities and monitor emerging industry issues.
• Coordinate with the marketing team to create or maintain marketing materials (e.g., project sheets, resumes, project lists).
• Assist with marketing/business development plans and budgets for national accounts.
• Maintain consistent interaction with multiple offices to support marketing strategies for national account growth.
• Support Account Managers and Executives in nurturing client relationships and achieving sales objectives.
• Assist in organizing the national account program, including quarterly tracking and reporting.
• Identify new business opportunities with potential customers.
• Provide research, data consolidation, and recommendations for internal reports and industry trend analysis.
• Create work plans and meet project deadlines.
• Occasional out-of-office visits to other ECS facilities may be required.
• Provide administrative support as needed.

Requirements

• BS in Business Administration, Marketing, Communications, or a related field (preferred).
• 7+ years of related experience.

About the company

ECS Group of Companies (ECS) was founded in 1988 to raise the standards of professional engineering consulting. Today, ECS is a leader in geotechnical, construction materials, environmental, and facilities consulting services. As an employee-owned firm, ECS has over 3,000 employees across 100+ offices and testing facilities nationwide. ECS is ranked #60 in Engineering News-Record’s Top 500 Design Firms (April 2026), #148 in Engineering News-Record’s Top 200 Environmental Firms (October 2025), and #50 in Zweig Group’s Hot Firm List (May 2025).