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Job description
The Environmental Senior Project Manager is responsible for the successful execution of environmental consulting projects from proposal development through project closeout and collection. This role provides technical leadership, project oversight, client management, staff development, and financial accountability across multiple projects. The Environmental Senior Project Manager serves as the primary client contact on assigned projects, mentors technical staff, and ensures projects are delivered safely, profitably, and in accordance with company standards while demonstrating ECS Core Values.
Responsibilities
Performs Phase I Environmental Site Assessments independently as an Environmental Professional
Reviews Phase I ESA reports prepared by junior staff
Oversees project scheduling, execution, reporting, and closeout
Communicates project findings and recommendations to clients and Principals
Performs detailed technical reviews of reports and conclusions
Leads and mentors junior staff and supports professional development across the team
Manages environmental consulting projects from proposal through project closeout
Serves as the primary client contact for assigned projects
Maintains and expands client relationships and business opportunities
Manages project budgets, profitability, invoicing, and collections
Reviews and approves project change orders and budgeting adjustments
Schedules, trains, and oversees technical staff assigned to projects
Coordinates project staffing and resource allocation
Oversees multiple projects simultaneously and ensures successful project execution
Reviews and approves proposals, scopes of work, and fee estimates
Prepares and reviews environmental reports, analyses, and recommendations
Conducts senior-level reviews of project deliverables before Principal review
Leads client meetings and project discussions
Supports staffing decisions in collaboration with department leadership
Provides guidance on technical, operational, and project management issues
Performs additional project leadership and technical duties as assigned
Required Qualifications
5 years of related experience
Bachelor's and/or Master's of Science in Civil Engineering, Environmental Engineering, Natural or Environmental Science, Geology, or other degree relevant to the practice of Environmental Consulting
Must have the ability to obtain a local license through reciprocity within three months of hire date Additional licensure or certifications may be required depending on the type of work performed
Extensive knowledge of environmental principles, regulations, and consulting practices
Extensive knowledge of permitting requirements and environmental investigation methodologies
Excellent project management and consulting skills
Strong leadership, coaching, and team development capabilities
Strong financial management and budgeting skills
Ability to manage multiple complex projects simultaneously
Ability to build and maintain long-term client relationships
Strong written and verbal communication skills
Ability to review and evaluate technical work produced by others
Strong business development and client growth capabilities
If driving for or on behalf of any ECS subsidiary, a valid driver's license is required
Military Qualifications
The following US Military ranks will qualify for this position IF they also meet the education and licenses requirements from the above section titled "Required Qualifications":
E-7
ECS Group of Companies (ECS) was founded in 1988 with the goal to raise the standards of professional engineering consulting. Today, we are a leader in geotechnical, construction materials, environmental and building science + infrastructure consulting services. We are employee-owned with more than 3,00 employees in 100+ offices and testing facilities coast to coast. ECS is currently 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 #38 in Zweig Group’s Hot Firm List (June 2026). For additional information about ECS, visit:
ECS is an Equal Opportunity Employer. To learn more, click here.
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Worksite address
st. louis, MO, 63146, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.