Principal Water & Sustainability

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 grow, we’re focused on building a team of high-performing professionals who are ready to lead, collaborate, and push what’s possible. At Apex, you don’t just join a company, you help shape what comes next. Apex Companies is adding a Principal - Water & Sustainability to our team. This is a fully remote position based in the United States. About us Apex Companies delivers engineering, consulting, and field services that help clients solve complex environmental and infrastructure challenges. Our multidisciplinary teams work across water, environmental, and sustainability topics to deliver practical, cost-effective solutions that improve performance, reduce risk, and support resilient communities. The role This role connects traditional water infrastructure work with broader sustainability goals for both private and public sector clients. You will lead programs that translate stormwater, wastewater, and water infrastructure projects into measurable sustainability outcomes while supporting growth in priority sectors, including data centers, retail, and manufacturing. What you’ll do Build and lead water and sustainability programs from assessment through implementation Leverage Apex’s deep stormwater, water supply and wastewater expertise to identify practical sustainability opportunities Manage project scope, schedule, budget, and deliverables Translate regulatory requirements and field insights into sustainability targets and strategies Serve as project manager and build long-term relationships Support growth in priority markets by identifying opportunities and contributing to proposals Represent Apex in client meetings, industry forums, and partner engagements Coordinate multidisciplinary teams across engineering, field services, and sustainability What you bring Must have 10+ years of experience in water resources, water stewardship, water reuse, water efficiency, water risk assessment, water infrastructure, or related fields Hands-on experience in water sustainability program development and delivery Business development experience and industry relationships that can translate to new opportunities Ability to connect technical work to sustainability outcomes Strong project management and client-facing skills Bachelor’s degree in engineering, environmental science, or related field Nice to have Experience in data center or mission-critical infrastructure Familiarity with CDP Water, Alliance for Water Stewardship, Volumetric Water Benefits Accounting, or similar frameworks What we offer We offer competitive compensation, strong career growth opportunities, and the chance to work on meaningful projects with leading clients across industries. Our commitment to diversity Apex is an equal opportunity employer. We value diverse perspectives and are committed to building an inclusive workplace where all employees can contribute and grow. Why you'll love working for us: Company-subsidized medical and dental. Company-paid life, short, and long-term disability. 401k match, tuition assistance, and more. Cross-training and the ability to work on a variety of projects. Performance-based bonuses or other incentives. Working with the best and brightest in the industry. 2,000+ employee national firm with 70+ locations across the US. #LI-AR1 Apex Job Title: Scientist 6 - Principal Scientist Req ID: 11880 Annual Expected Pay Range $130,000 — $170,000 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 [email protected] 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 TO ALL RECRUITMENT AGENCIES: Apex Companies does not accept unsolicited agency resumes. Please do not forward resumes for any of our job postings to our career’s sites, or to any employees of Apex Companies or affiliates. Apex Companies is not responsible for any fees related to unsolicited resumes.