Principal - Water/Wastewater Infrastructure

About Apex Companies

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.

The Opportunity

Apex is expanding our Infrastructure Practice and seeking a Principal-level leader to build and grow our Water/Wastewater business in one of our target Northeast markets: Springfield or Worcester, Massachusetts; Manchester, New Hampshire; or Southwest Connecticut. This role will begin as a remote position with the intent to establish a local office in one of the target markets. Once the office is opened, the position will transition to a hybrid work arrangement.

This is a strategic growth role for a senior, client-facing professional with a strong municipal network and an active book of business. The successful candidate will lead business development and project delivery for municipal water, wastewater, and stormwater infrastructure projects in their local geography, supported by Apex’s national resources and multidisciplinary teams. If you are an entrepreneurial leader with a track record of building markets, winning work, and delivering impactful infrastructure projects, we invite you to join Apex and help shape the next chapter of our Infrastructure growth. We are offering a sign-on bonus as well as relocation for the right candidate.

Key Responsibilities

Market Growth & Leadership

• Lead the growth of Apex’s water, wastewater, and stormwater services within your designated local market.
• Develop and execute a strategic plan to expand relationships with municipal, utility, and public-sector clients.
• Leverage existing client relationships and your market insight to establish Apex as a trusted regional partner.
• Collaborate with Divisional and Regional Leadership to align local efforts with Apex’s broader infrastructure strategy.

Client Development & Relationship Management

• Serve as a trusted advisor to municipal and utility clients, understanding their infrastructure priorities and funding mechanisms.
• Identify and pursue new project opportunities, lead proposal development, and manage interview and negotiation processes.
• Drive cross-selling of Apex’s complementary environmental, construction, and compliance services.
• Represent Apex at professional associations, technical committees, and industry conferences.

Project Delivery & Fiscal Oversight

• Oversee delivery of municipal infrastructure projects including water and wastewater treatment, distribution/collection systems, and stormwater management.
• Ensure technical excellence, quality control, and adherence to scope, schedule, and budget.
• Provide technical leadership, mentoring, and QA/QC oversight to project teams.
• Manage project performance, including backlog, utilization, and profitability metrics.

Team Building & Mentorship

• Recruit, mentor, and develop engineers, project managers, and technical staff to grow Apex’s local presence.
• Foster a collaborative, high-performance culture focused on client satisfaction and technical excellence.
• Participate in Apex’s Principal Leadership group, contributing to strategic planning, market development, and talent initiatives.

What We're Looking For

• BS or MS Degree in Civil or Environmental Engineering or relevant engineering discipline
• 15+ years of experience in municipal water, wastewater, or stormwater infrastructure
• Registered Professional Engineer preferred in MA, CT, or NH
• Proven background in the design and management of water and wastewater treatment, distribution, collection, and conveyance systems
• Demonstrated success in developing new markets, securing key municipal clients, and achieving financial growth targets
• Strong record of mentoring, team development, and leading cross-discipline project teams
• Demonstrated ability to work effectively with clients in a forward-thinking manner to drive growth and sustained performance through effective leadership
• Excellent written and verbal communication skills
• Desire to manage and mentor all levels of staff

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.

Key skills/competency

• Water Infrastructure Leadership
• Wastewater Treatment Design
• Stormwater Management
• Business Development
• Client Relationship Management
• Project Delivery
• Team Leadership
• Municipal Consulting
• Engineering Management
• Infrastructure Growth