Project Engineer III/IV - Water/Wastewater
$80k - $95kTrilon Group
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 (WaterGEMS, SewerGEMS, InfoWater, 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 Equal Opportunity Employer Gonzalez Companies, LLC provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. #J-18808-Ljbffr Trilon Group
$80k - $95k
Gonzalez Companies, LLC is seeking a Project Engineer (III/IV) in Water/Wastewater in St. Louis, MO. The role focuses on the design and oversight of treatment facilities and pipelines, requiring proficiency in hydraulic modeling and AutoCAD. Candidates should hold a Bachelor...Water- Trilon Group is seeking a Project Engineer (III/IV) - Water/Wastewater to provide engineering services for water and wastewater facilities. Ideal candidates will have a bachelor’s degree in engineering along with 4-8+ years of relevant experience. Responsibilities include...Water
- American Water is looking for an Associate, Project Delivery Engineer in St. Louis, MO. This entry-level role involves various engineering tasks related to water and wastewater utility systems, including design, project management, and operational support. The successful...Water
- ...Omaha, NE Billings, MT Bozeman, MT Kalispell, MT Cheyenne, WY Kansas City, MO St. Louis, MO IMEG is hiring a Civil Project Engineer to support water/wastewater-focused civil engineering projects and lead design efforts for low- to moderate-complexity work while...WaterLocal areaFlexible hoursNight shift
- IMEG Corporation is seeking a Water/Wastewater Project Engineer in St. Louis, MO, to lead design efforts on municipal, commercial, and industrial projects. The ideal candidate will have a BS in Civil Engineering, preferably a PE License, with 2+ years of experience. Responsibilities...Water
- GHD is seeking a Project Engineer to join its Central US Water business in St. Louis. The role involves leading design and implementation of water and wastewater conveyance projects, managing multidisciplinary teams, and ensuring project delivery meets professional standards...Water
- Process Engineer III/ IV - Small Molecule/ Oligo/ Peptide CRB is a leading provider of sustainable... ...across pharmaceutical and chemical projects. Key Responsibilities Lead and support... ...dryers, vacuum pumps, scrubbers, purified water, process compressed gases, and...WaterWorldwide
- Hanson Professional Services Inc. is seeking a Water/Wastewater Engineer to design innovative solutions for municipal projects. This role involves leading the design of water distribution and wastewater systems, managing projects, and mentoring junior engineers. Ideal candidates...Water
$100k - $140k
...practices creates a focus on client success and partnerships that are important to our communities and our environment.Water/Wastewater Engineer (Municipal Projects)Shape the Future of Water and Wastewater Infrastructure with Hanson!At Hanson, we’re dedicated to pioneering...WaterInternshipLocal area- A distinguished engineering firm in St. Louis, Missouri, is seeking a Water/Wastewater Engineer to design cutting-edge water and wastewater systems. The role involves managing projects, mentoring junior engineers, and developing relationships with clients. With a focus...Water
- ...construction and fabrication for new water/wastewater treatment plants. It will also support... ...maintenance, and capital improvement projects across Missouri. There is extensive travel... ...repairs Collaborate with operations, engineering, and project teams to ensure efficient...Water
- ...a Treatment Plant Intern, you will gain hands-on experience in water treatment operations, including system monitoring, data collection... ...a valid driver's license. Internships are available at various wastewater treatment plants in St. Louis, scheduled from May to July. #J-1...WaterSummer workInternshipSummer internship
$80k - $95k
...Management Services to large and small Water, Sewer and Utility Districts; Departments... ...are currently seeking a Transportation Engineer (III/IV) to help serve our connection of... ...clients, we want you on our team. The projected range of compensation in Illinois for this...WaterLocal areaFlexible hours- Overview Our Central US Water business is growing. We're looking for a Project Engineer with expertise in water and wastewater conveyance systems to support and/or lead the design of complex infrastructure projects. This role involves being a key part of multidisciplinary...WaterFor contractors
- A water utility company in Missouri seeks a skilled professional for the construction and maintenance of water/wastewater treatment plants. The role requires experience in pipe installations... ...systems, and collaboration within project teams. Candidates should have a strong...Water
- A leading engineering consulting firm seeks a Senior Water/Wastewater Process Engineer/Project Manager to lead projects in St. Louis. This role involves managing multi-discipline project teams and delivering quality services for water systems. Candidates must have a B....Water
- ...International Association of Plumbing and Mechanical Officials (IAPMO) is seeking a contracted employee to oversee construction projects related to water/wastewater treatment and collection systems in St. Louis, Missouri. Your primary responsibilities will include managing project...Water
$85k - $115k
.../ Year Horner & Shifrin is seeking a full-time Building Project Engineer in our Structural Business Unit. This position requires 8+... ...preferred) Experience with structural design and detailing of water or wastewater plant structures or similar structures (firm requirement)...WaterFull timeFor contractorsCasual workFlexible hours- A leading engineering firm in St. Louis is seeking a Civil Engineer - Water/Wastewater to provide water and wastewater design services. The ideal candidate will have a Bachelor's Degree in Civil Engineering, at least 3-7 years of relevant experience, and proficiency in...WaterFull time
$90k - $120k
...last nine years running. We are a team of Engineers, Architects, Surveyors, and Scientists... ...Group is seeking an experienced Civil Project Engineer in one of the below posting... ...various civil engineering projects including water/wastewater/stormwater and transportation projects...WaterTemporary workLocal areaImmediate startFlexible hours$100k - $120k
Hanson Professional Services, Inc. is looking for a motivated Water/Wastewater Engineer with 5 years of experience to support projects in St. Louis, MO. You will design and implement systems, including treatment facilities and distribution networks, while collaborating...WaterLocal area$75k - $108.8k
...team. You’ll work with Jacobs Construction Managers, Project Managers, Inspectors, and Engineers in addition to the Project Client and Contractors... ...Owner to lead construction management on a variety of water and wastewater facility projects in the St Louis area. Bring your...WaterFull timeFor contractorsWork at officeRemote work- American Water Co. is seeking an Associate Construction Engineer based in St. Louis, Missouri. This entry-level position involves... ...various engineering tasks for water and wastewater utility systems such as planning, design, and project management. Responsibilities include...Water
- Requisition ID 109608 -Posted - Engineering - MO - St Louis - Full Time - Regular The Associate, Project Delivery Engineer is an entry level position in the Engineering... ...for various engineering tasks for water and wastewater utility systems, such as design, project management...WaterFull timeContract workCasual workWork at officeLocal area
- Senior Water/Wastewater Process Engineer/Project Manager This position offers an exciting opportunity for the selected candidate to be part of a firm with national water/wastewater expertise in a small company environment. We are seeking an engineer that has experience...Water
$100k - $120k
...commitment to client success and community impact. We are seeking a motivated Water/Wastewater Engineer with 5 years of experience to support regional water and wastewater infrastructure projects from our St. Louis, MO office. Position Overview As the Water/Wastewater...WaterInternshipWork at officeLocal area- ...highways, bridges, underground utilities, water/wastewater facilities, and marine construction.... ...activities of power and industrial projects. Ensure that project goals are accomplished... ...progress and ensure conformance to engineering plans, specifications, and...WaterContract workFor contractorsFor subcontractorWork at office
- A national engineering firm is seeking an Operations & Maintenance Specialist in St. Louis, MO. The role involves providing technical and operational support for water and wastewater treatment facilities across the U.S., requiring a travel commitment of 75%. Candidates...Water
- A leading engineering firm in the United States is seeking a Structural Engineer to enhance its multi-discipline project teams. The role involves working on projects specific to water and wastewater infrastructure while collaborating closely with other engineering disciplines...WaterFlexible hours
- A national engineering consulting firm located in Missouri is seeking an experienced engineer to enhance their water and wastewater market share. This role involves planning and designing systems... ...client relationships, and leading project teams to ensure timely and quality...Water
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Project Engineer III/IV - Water/Wastewater. Be the first to apply!
- project application engineer Saint Louis, MO
- project engineer Saint Louis, MO
- information technology project engineer Saint Louis, MO
- project mechanical engineer Saint Louis, MO
- senior project engineer Saint Louis, MO
- sr project engineer Saint Louis, MO
- remote project engineer Saint Louis, MO
- data center project engineer Saint Louis, MO
- hydraulic modeling engineer Saint Louis, MO
- water engineer Saint Louis, MO

