Senior Administrative Assistant - National Accounts

About the role

This position supports National Accounts by partnering with National Account Specialists and office-level administrative employees. The role focuses on client satisfaction, revenue optimization, and account growth through day-to-day client servicing, coordination of regional and national accounts, and regular client interaction.

Responsibilities

• Supervise 1-2 National Account Specialists within the program team.
• Handle day-to-day activities servicing clients, including coordinating new and existing regional and/or national accounts.
• Interact with clients regularly to provide support, product updates, and reporting.
• Ensure consistency and accuracy of customer account deliverables.
• Schedule client meetings and teleconferences; prepare materials as needed.
• Assist with organizing client events and other assigned duties.
• Stay current with clients' industries, trends, and maintain strong industry relationships.
• Assist with contract support and accounts collections.
• Identify business initiatives and improvements.
• Produce and proofread statements of qualifications and proposals.
• Support the project team by writing, coordinating, designing, and developing proposals and presentations for prime and teaming opportunities.
• Coordinate and communicate with clients during the pre-project/proposal phase to generate business.
• Compile and maintain information in the client database, ensuring accuracy and completeness.
• Assist with maintaining and updating the client database for regional and national accounts to develop leads and target marketing.
• Maintain and track an active list of all projects for specified national clients.
• Engage in tasks such as tracking data, direct email marketing, and gathering market data.
• Conduct market research to evaluate marketing and communication activities and monitor emerging 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 specific to national accounts.
• Maintain consistent interaction with multiple offices, including principals, directors, and managers, to support marketing strategy for national account growth.
• Assist Account Managers and Executives in nurturing client relationships, managing accounts, and achieving sales objectives.
• Support the organizational management of the national account program, including tracking and reporting accounts quarterly with account managers and the program director.
• Work with Account Managers and Executives to identify new business opportunities with potential customers.
• Provide research, data consolidation, and recommendation development for internal reports, process documents, or industry trend reporting.
• Create work plans and meet project deadlines.
• Occasional out-of-office visits to other ECS facilities may be required.
• Provide administrative support as necessary.

Requirements

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

About the company

ECS Group of Companies (ECS) was founded in 1988 with the goal of raising the standards of professional engineering consulting. Today, ECS is a leader in geotechnical, construction materials, environmental, and facilities consulting services. The company is employee-owned with over 3,000 employees in 100+ offices and testing facilities across the U.S. 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).