Senior Wastewater Engineer

Current job opportunities are posted here as they become available.

Job
:
Senior Wastewater Engineer
Location
:
Lenexa, KS (HQ), or Omaha, NE, or Austin, TX, or Chesterfield, MO.

At GBA, we’re more than engineers—we’re problem-solvers, collaborators, and community builders. Our people are passionate about delivering innovative, high-quality solutions that improve the places we live, work, and play. We combine deep technical expertise with a commitment to mentorship, safety, and continuous improvement to create remarkable outcomes for our clients and meaningful growth for our team.

We’re looking for a Senior Wastewater Engineer to join our Water Environment Group (WEG) in Lenexa, KS. This role is key to leading the study, design, and delivery of wastewater collection and treatment system projects. You’ll collaborate across offices, mentor junior staff, and help drive technical excellence and client satisfaction.

As a Senior Wastewater Engineer, you’ll:

• Lead the design and quality control of wastewater treatment projects, including primary, secondary, and tertiary systems.
• Provide technical expertise in hydraulic modeling and treatment process simulations.
• Prepare reports, technical documentation, and client deliverables.
• Coordinate construction observation services and support project execution.
• Mentor and coach junior engineers, fostering technical growth and career development.
• Assist in group scheduling, planning, and resource allocation.
• Collaborate across WEG offices to support multi-disciplinary projects.
• Support business development efforts with new and existing clients.
• Manage projects involving lift stations, sanitary sewer flow monitoring, field data collection, modeling, and system rehabilitation design.
• Ensure projects meet regulatory requirements, safety standards, and client expectations.

• Bachelor’s degree in Civil or Mechanical Engineering.
• Professional Engineer (PE) license in Kansas, Missouri, or Texas (preferred).
• 10+ years of progressive experience in wastewater treatment and plant design.
• Expertise in biological nutrient removal, chemical feed systems, and rehabilitation design.
• Strong client management and communication skills.
• Ability to manage multiple projects in a fast-paced, collaborative environment.

• Ability to work in both office and field environments.
• Occasional local and overnight travel may be required.

At GBA, you’ll be part of a team that values integrity, innovation, and collaboration. We offer a comprehensive benefits package designed to support you and your family, including:

• Medical, dental, and vision insurance
• Life, accident, and disability coverage
• 401(k) with company match
• Employee Assistance Program (EAP) and wellness initiatives
• Paid company holidays, floating holidays, and flexible time off
• Opportunities for training, professional growth, and advancement

If you’re a driven wastewater professional who thrives on solving complex challenges and mentoring others, we’d love to hear from you.

Apply today and build your future with GBA.

GBA is an Equal Employment Opportunity Employer. We promote diversity in our workforce by including all individuals regardless of age, race, religion, color, sex, national origin, marital status, genetic information, sexual orientation, gender identity, gender expression, disability, veteran status, pregnancy status, or any other status protected by law.