Sr. Project Manager - Environmental
Apex Companies
Rockville, MD · $100k–$130k a year · Posted October 6, 2026
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AI use among environmental engineers is little observed so far. Measured exposure for environmental engineers: 4% (little observed).
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About the job
Are you driven to grow, lead, and make a meaningful impact? At Apex, we’re building more than a consulting and engineering firm—we’re creating a place where your career accelerates, your contributions matter, and your potential is fully realized. We believe your growth is our growth, which is why we invest in your development at every stage of your career. Here, you’ll work on projects that shape communities, protect the environment, and create lasting impact, all while being empowered with the autonomy and flexibility to do your best work.
Fueled by high-quality delivery, exceptional client retention, and strategic acquisitions, Apex Companies continues to rank among the fastest-growing firms in the AEC industry, recently recognized by the Zweig Group for our industry-leading growth. Our success is grounded in strong leadership, a collaborative culture, and a shared commitment to delivering exceptional outcomes.
As we continue to expand, we're looking for high-performing professionals who are ready to lead, collaborate, innovate, and create impact. At Apex, you help shape what's next. When we succeed together, we share in that success. All Apex positions are eligible for annual bonus opportunities, reinforcing our commitment to recognizing and rewarding meaningful contributions that drive our collective growth.
Are you an experienced environmental consulting professional who enjoys leading complex projects, building lasting client relationships, and mentoring technical teams? Apex Companies is seeking a Senior Project Manager to join our Environmental Services team.
In this role, you'll manage a diverse portfolio of environmental consulting projects from proposal through completion, serving commercial, industrial, municipal, and federal clients. You'll oversee project execution, provide technical leadership, mentor staff, and partner with clients to develop practical solutions while helping expand long-term business relationships.
This is an excellent opportunity for someone who enjoys balancing technical expertise, project leadership, and client engagement while working alongside a collaborative team of environmental professionals.
Your Responsibilities as a Senior Project Manager
Manage multiple environmental consulting projects simultaneously, ensuring projects are completed safely, on schedule, within budget, and to Apex's quality standards.
Serve as the primary point of contact for clients, building trusted relationships through responsive communication, technical expertise, and exceptional service.
Develop project scopes, work plans, schedules, budgets, and proposals while monitoring project performance from kickoff through completion.
Manage project financial performance, including budgets, change orders, invoicing, and overall project profitability.
Coordinate project staffing, subcontractors, and internal resources to successfully deliver multiple concurrent projects.
Review technical reports, work products, and client deliverables to ensure quality, accuracy, and regulatory compliance.
Provide technical oversight and guidance to project managers, scientists, geologists, and field staff while mentoring the next generation of environmental professionals.
Attend client meetings, project discussions, and site visits to support project planning, quality assurance, and successful project execution.
Collaborate with technical experts and project managers across Apex's national network to deliver innovative solutions for clients.
Identify opportunities to expand existing client relationships, prepare proposals, deliver presentations, and support business development efforts.
Foster a culture of safety, quality, and continuous improvement on every project.
What We're Looking For
Bachelor's degree in Geology or a related scientific discipline (Master's degree preferred).
Professional Geologist (PG) license or the ability to obtain licensure is preferred.
10+ years of environmental consulting experience with increasing project management responsibilities.
Demonstrated success managing environmental consulting projects from proposal through completion.
Strong technical writing and report review experience.
Experience managing project budgets, schedules, subcontractors, and client expectations.
Proven ability to successfully manage multiple projects while balancing competing priorities.
Strong communication, presentation, and relationship-building skills.
Experience mentoring and developing technical staff.
Business development experience, including proposal preparation and client relationship management.
Proficiency with Microsoft 365; experience with CRM platforms and Deltek Vision is a plus.
Why You'll Love Working for Us
Company-subsidized medical and dental insurance.
Company-paid life, short-term, and long-term disability insurance.
401(k) match and tuition assistance.
Cross-training and opportunities to work on a variety of environmental projects.
Performance-based bonuses and other incentives.
Opportunities for continued technical and professional development.
The opportunity to work alongside some of the best and brightest professionals in the environmental industry.
Join a 2,000+ employee national firm with 70+ locations across the United States.
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Apex Job Title: Sr Project Manager
Req ID: 12188 Annual Expected Pay Range $100,000 — $130,000 USD
We believe in equality for all and celebrate the diversity and differences of our employees, customers, and communities. We do not discriminate based on gender, race or color, ethnicity or national origin, age, disability, religion, sexual orientation, gender identity or expression, veteran status, or any other applicable characteristics protected by law. Apex aims to make apexcos.com accessible to all users. If you have a disability or special need that requires accommodation to navigate our website or complete the application process, please contact Talent@apexcos.com or (301) 417-0200. Likewise, feel free to reach out to us if you would like to view or discuss Apex policy related to equal employment opportunity or have any related concerns. EO/AA/VEV/Disabled Employer
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