×
Register Here to Apply for Jobs or Post Jobs. X

Project Engineer III​/IV - Water​/Wastewater

Job in St. Louis, Saint Louis, St. Louis city, Missouri, 63105, USA
Listing for: Gonzalez Companies, LLC
Full Time position
Listed on 2026-01-01
Job specializations:
  • Engineering
    Water Engineer, Environmental Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 95000 USD Yearly USD 80000.00 95000.00 YEAR
Job Description & How to Apply Below
Location: St. Louis

Join to apply for the Project Engineer III/IV - Water/Wastewater role at Gonzalez Companies, LLC

1 day ago Be among the first 25 applicants

Join to apply for the Project Engineer III/IV - Water/Wastewater role at Gonzalez Companies, LLC

Get AI-powered advice on this job and more exclusive features.

Description

Gonzalez Companies is a partner managed firm that provides comprehensive Planning, Design, and Construction Management Services to large and small Water, Sewer and Utility Districts;
Departments of Transportation; and municipalities. We are currently seeking a Project Engineer (III/IV) - Water/Wastewater to help serve our connection of clients and community. If you’re hungry for knowledge, ready to make a difference and dedicated to providing personalized attention to our clients, we want you on our team.

Department: Water/Wastewater

Location: St. Louis, MO

Description

Gonzalez Companies is a partner managed firm that provides comprehensive Planning, Design, and Construction Management Services to large and small Water, Sewer and Utility Districts;
Departments of Transportation; and municipalities. We are currently seeking a Project Engineer (III/IV) - Water/Wastewater to help serve our connection of clients and community. If you’re hungry for knowledge, ready to make a difference and dedicated to providing personalized attention to our clients, we want you on our team.

The projected range of compensation in Illinois for this job is $80,000 - $95,000.

Your Primary Responsibilities will include

  • Lead the design, analysis, and technical oversight of water and wastewater treatment facilities, pump stations, pipelines, and related infrastructure.
  • Prepare and review engineering calculations, design drawings, specifications, and technical reports.
  • Conduct hydraulic modeling and system analysis to optimize water distribution and sewer collection networks.
  • Manage field investigations, site assessments, and construction observation; provide technical guidance to junior engineers.
  • Develop project scopes, cost estimates, schedules, and proposals; support project management activities.
  • Coordinate multidisciplinary teams to ensure integrated and compliant project designs.
  • Review and ensure compliance with design standards, regulatory requirements, and permitting processes.
  • Serve as a point of contact for clients, contractors, and regulatory agencies; communicate technical information clearly and effectively.
  • Mentor and support junior staff; uphold quality control and company engineering standards.
What you'll need

  • Bachelor’s degree in Civil, Environmental, or related engineering field.
  • EI/EIT required; PE registration preferred or in progress.
  • 4–8+ years of experience in water/wastewater design, permitting, or construction support.
  • Proficiency with hydraulic modeling tools (Water

    GEMS, Sewer

    GEMS, Info Water, SWMM, etc.).
  • Strong experience with AutoCAD/Civil 3D; BIM/Revit knowledge preferred.
  • Demonstrated experience with pump systems, process equipment, site layout, and utility design.
  • Excellent analytical, project management, and problem-solving skills.
  • Strong leadership, communication, and client coordination abilities; capable of mentoring junior engineers.
Gonzalez Offers Competitive Benefits including:

  • Competitive salary
  • Major medical, dental and vision insurance
  • Flexible Spending Account
  • Health Savings Account
  • 401K
  • Bonus program
  • Paid holidays and generous paid time off
  • Professional development
  • A team of creative and talented individuals to work alongside
Gonzalez is a rapidly growing, dynamic, professional services firm specializing in civil engineering, construction management, and construction inspection. Our clientele includes large and small water, sewer, and utility districts; departments of transportation and other public transportation agencies; and municipalities throughout the Midwest.

Working primarily in the Greater St. Louis, Chicago, and Louisville metro areas, Gonzalez offers a great work environment, generous benefit packages, and opportunities to succeed in many professional disciplines.

Equal Opportunity Employer

Gonzalez Companies, LLC provides equal employment opportunities to all employees and applicants for…
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)

Job Posting Language
Employment Category
Education (minimum level)
Filters
Education Level
Experience Level (years)
Posted in last:
Salary