Water​/Wastewater Treatment Engineer

Freese and Nichols

Freese and Nichols is currently searching for a Water and Wastewater Treatment Engineer to serve as a Project Manager or Senior Project Manager in our San Antonio, Corpus Christi, or Harlingen, TX offices. As a project manager, you’ll guide multidisciplinary teams through the planning and delivery of large, complex, and essential systems.

• Lead and oversee the analysis, design, construction administration, and preparation of technical reports, plans, and specifications for various water treatment, wastewater treatment, reuse, and resource recovery facility projects.
• Lead and mentor a team of engineers and designers across multiple offices and disciplines
• Coordinate scope, schedule, and budget to ensure high-quality, on-time project delivery
• Serve as primary client contact, maintaining communication, trust, and long-term relationships
• Collaborate with subject matter experts on advanced technologies such as M , EBPR, RO, and desalination
• Support proposal development and participate in business development with existing and prospective clients
• Must have a proven ability to build and maintain trusted advisor relationships with clients, both internal and external, as well as representatives of local, state and federal regulatory agencies.
• The individual must have proven skills in managing complex projects, multi-discipline treatment plant projects and teams. Experience with projects in the $1M+ fee range is a plus.
• Must have a mix of technical experience including but not limited to water and wastewater process design, an understanding of treatment plant civil/structural/mechanical/electrical design, treatment process studies, and construction contract administration and management.

• Bachelor's degree in Civil, Mechanical, or Environmental Engineering or related field
• Texas Professional Engineer (PE) license (or the ability to become licensed in Texas within 6 months.)
• 8+ years of related water and wastewater treatment experience with emphasis on plant process evaluation, design, and construction of municipal water or wastewater treatment plants.
• Strong communication skills, written and verbal, and strong presentation and sales skills needed.

• Master’s degree in Environmental Engineering

At the heart of our culture is our LEADS values (Learn continuously, Engage as family, Act with integrity, Deliver quality, and Serve always). Each year, our employee engagement survey confirms that our leaders and our employees live our values.

We strive to be the firm of choice for clients and employees through innovative approaches, practical results, and outstanding service. For more than 130 years, we have been planning and designing the infrastructure our communities need: developing water supplies, designing roadways and bridges, preparing for natural disasters, and much more.

Besides our comprehensive benefits package (see more at ), we offer paid overtime for salaried employees, an annual bonus, and access to company cabins in Red River, New Mexico. We are proud of our flexible work environment which includes a hybrid schedule with up to 40% of remote work, and an alternative work schedule program which provides a day off every other Friday.

Join our team of 1,300+ employees as we grow from Virginia to Colorado. Learn more about working here at

Freese and Nichols is firmly committed to Equal Employment Opportunity (EEO) and prohibits employment discrimination for employees and applicants based upon race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.