Project Engineer III - Water​/Wastewater

We Make Everything Around Us Better

At PRIME AE, that’s not a slogan, it’s how we work. Every bridge, building, campus, park, and roadway we design exists to improve how people live, move, learn, and connect. Through architecture, engineering, planning, and consulting, we partner with clients to create thoughtful, practical solutions that leave communities stronger than we found them.

If you want your work to matter, and to be surrounded by smart, collaborative people who care about doing things the right way, you’ll feel at home here.

PRIME AE Group, Inc. (  ) is a nationally ranked, full-service architecture and engineering firm driven by collaboration, innovation, and a commitment to strengthening the communities we serve. With a growing footprint of offices across the country and a diverse team of more than 550 professionals, we partner with public and private sector clients to deliver thoughtful, high‑impact solutions across transportation, education, healthcare, municipal, federal, commercial, and recreational markets.

Our culture blends entrepreneurial energy with the resources of a scaled, multidisciplinary platform—giving our people the opportunity to shape meaningful projects while influencing the future direction of the firm. As PRIME AE continues to expand its capabilities, geographic reach, and leadership bench, this is an exciting time to join a team that is building momentum, investing in growth, and empowering leaders to make a lasting impact.

We are currently seeking a Project Engineer III – Water/Wastewater to join our Louisville, KY or Indianapolis, IN offices.

In this role, you will lead the design and technical delivery of water and wastewater infrastructure projects for municipal and private‑sector clients. Projects may include water distribution systems, storage facilities, booster pump stations, wastewater collection systems, pump stations, and treatment facilities.

This position is ideal for a licensed Professional Engineer with 8+ years of experience who is ready to take on greater technical leadership responsibilities while supporting project management and mentoring junior staff. You will collaborate with multidisciplinary teams, perform engineering analysis, develop design documents, and support projects through planning, design, and construction phases.

This is an excellent opportunity to contribute to meaningful infrastructure projects while advancing your career within PRIME AE’s collaborative and people‑focused environment.

As a Project Engineer III, you will lead technical design efforts and support project delivery for water and wastewater infrastructure projects. You will coordinate with project managers, engineers, and clients to ensure projects are designed efficiently and meet regulatory requirements and quality standards.

• Lead engineering design activities related to water and wastewater infrastructure and site development projects.
• Perform site and utility design using Civil 3D and/or Carlson Civil Suite within the AutoCAD platform.
• Perform hydrologic and hydraulic calculations, technical analyses, and supporting documentation.
• Prepare and review engineering drawings, plans, specifications, cost estimates, and contract documents.
• Assist with the preparation of engineering reports, studies, and system evaluations.
• Coordinate with project managers and design teams to develop detailed construction documents.
• Participate in field visits and site evaluations during design and construction phases.
• Support the development of professional services proposals and technical submissions.
• Research and apply local, state, and federal regulatory requirements related to project design.
• Collaborate with multidisciplinary teams and provide technical guidance to junior staff as needed.
• Provide technical mentorship and design guidance to junior engineers and designers.

• Bachelor of Science in Civil Engineering.
• Professional Engineer (PE) license in Kentucky required; ability to obtain licensure in additional states preferred.
• 8+ years of experience in water/wastewater, municipal infrastructure, or site development…