Mechanical Engineer - Water & Wastewater Systems Design
Liberty Personnel Services, Inc.
Liberty Personnel Services, Inc. seeks a Mechanical Engineer to join our team in Missouri. You will plan, design, rehabilitate, and support construction of mechanical systems for water and wastewater facilities, including HVAC, plumbing, utilities, and fire protection. You will prepare calculations, specifications, reports, cost estimates, and construction documents and coordinate with vendors and multidisciplinary teams to deliver practical, reliable engineering solutions. #J-18808-Ljbffr Liberty Personnel Services, Inc.
- Overview Mechanical Engineer (Thermal Chilled Water Systems) role at Vertiv. The Mechanical Engineer will contribute to the design of mechanical parts and assemblies and will work in a cross-functional development group. This position will be based onsite at Vertiv's Westerville...SuggestedTemporary work
- ...become available. Our Process-Mechanical Engineer position offers an exciting... ..., a firm with national water/wastewater expertise in a small company... ...leadership, planning, design, construction, and operational... ...for wastewater and/or water systems. You will collaborate closely...SuggestedTemporary workFlexible hours
$40 - $55 per hour
...Project Engineer III/IV - Water/Wastewater Department: Water/Wastewater Employment Type: Full Time Location... ...that provides comprehensive Planning, Design, and Construction Management... ...reports. Conduct hydraulic modeling and system analysis to optimize water distribution...SuggestedFull timeFor contractorsLocal areaFlexible hours$65k - $190k
...Water/Wastewater Engineer Department: Water/Wastewater Employment Type: Full Time Location: St. Louis... ..., engineering, planning, and interior design firm, supporting clients throughout the... ...distribution networks, wastewater collection systems, and treatment facilities Design key...SuggestedFull timeTemporary workWork at officeLocal area- ...Gonzalez Companies in the Midwest is seeking a Project Engineer (III/IV) - Water/Wastewater to lead design, modeling, and coordination for water and sewer systems. You will guide engineers and coordinate with clients and regulators on projects from concept to permitting...Suggested
- ...Overview Join to apply for the Civil Engineer - Water/Wastewater role at Gonzalez Companies, LLC . Location: St. Louis, MO Gonzalez Companies is... ...partner managed firm that provides comprehensive Planning, Design, and Construction Management Services to large and small...Full timeWork at officeLocal areaFlexible 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...Local area$80k - $95k
...Project Engineer III/IV - Water/Wastewater Department: Water/Wastewater Employment Type: Full Time Location... ...that provides comprehensive Planning, Design, and Construction Management... ...reports. Conduct hydraulic modeling and system analysis to optimize water distribution...Full timeFor contractorsLocal areaFlexible hours$80k - $95k
...firm that provides comprehensive Planning, Design, and Construction Management Services to large and small Water, Sewer and Utility Districts;... ...municipalities. We are currently seeking a Project Engineer (III/IV) - Water/Wastewater to help serve our connection of clients...- 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...
- ...Gonzalez Companies, LLC is actively seeking a Project Engineer (III/IV) - Water/Wastewater in St. Louis, MO. You will lead design, analysis, and oversight of water and wastewater facilities, pump stations, pipelines, and related infrastructure, with emphasis on compliance...
- 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...Full time
$103.7k - $140.3k
...professional growth. Find your future with us. The Boeing Company has an exciting opportunity for an Experienced Mechanical Systems Design & Analysis Engineer to become part of the Boeing Test & Evaluation (BT&E) Aeronautical systems Integration & Test (ASIT) team in...Permanent employmentInterim roleRelocationVisa sponsorshipWork visaRelocation packageFlexible hoursShift workDay shift- ...an ambitious, driven engineering professional looking to... ...-performing team? Our Water Global Practice is recognized... ...top-tier engineering, design, and construction... ...industrial water and wastewater treatment plants, pump... ...of electrical systems associated with municipal...For contractorsWork at office
$80k - $95k
Gonzalez Companies is actively seeking a Project Engineer (III/IV) with a focus on Water and Wastewater to support our connection of clients and the community.... ...for municipal and utility clients across planning, design, and construction phases. The projected range of compensation...- IMEG Corp in St. Louis, MO invites applications for a Winter 2026 Mechanical Engineering New Graduate. This entry‑level role supports the analysis, design, and oversight of mechanical systems for the building industry, with hands‑on design, analysis, and project execution...
- Clayco is seeking an Entry-Level Mechanical Engineer in St. Louis, Missouri to support the mechanical design for mission-critical facilities such as data centers and industrial... ...hands-on experience with complex mechanical systems, focusing on integrated design and project...
- ...Project Engineer Join our team! Our mission is BUILDING... ...Engineering News Record's Top 500 Design Firms list in 2025. Our... .... This role supports our Water Resources team and... ...Resources, Potable Water, and Wastewater — giving you exposure to how systems come together. As a...For contractorsWork at officeLocal areaImmediate startFlexible hoursNight shift
- Gonzalez Companies is seeking a Project Engineer III/IV for Water/Wastewater in St. Louis, MO. Lead design and oversight of facilities, pump stations, and pipelines, with hands-on modeling, calculations, and reports. You will mentor junior staff, coordinate with multidisciplinary...
- Clayco and LJC Design & Engineering are seeking a Senior Mechanical Engineer / Stress Analysis Engineer to lead piping stress analyses and mechanical design for industrial facilities. You will act as the technical authority, mentor junior engineers, and ensure calculations...
- Gilder Search Group is seeking an Entry-Level Mechanical Engineer in St. Louis, Missouri. This role supports the mechanical design of mission-critical facilities. The ideal... ...project managers, assisting with calculations, system layouts, and drawing production....
$100k - $140k
...important to our communities and our environment. Water/Wastewater Engineer (Municipal Projects) Shape the Future of Water... ...Wastewater Engineer, you'll be at the forefront of designing cutting‑edge water and wastewater systems, playing a critical role in both the success of...InternshipLocal area- ...Building Engineering At HDR, our employee-owners are... ...is more than systems and structures, it's... ...Services Group, you'll help design the critical infrastructure... .... We bring together mechanical, electrical,... ...data centers, and/or water-wastewater preferred ~ Master'...Contract work
- ...Senior Mechanical EngineerThe Senior Mechanical Engineer will be working with in-house Development, Architecture... ...provide Mechanical HVAC Design and Quality Assurance on... ...).Design mechanical systems including water, chilled water, HVAC, wastewater, cooling towers/condensers...For contractorsFlexible hours
- DescriptionAs a Mechanical Engineer, you will work on project teams to create world-class designs for new projects, alterations and redevelopments on a variety of power projects... ...variety of power projects.Designs mechanical systems and selects components for project needs and...Contract workWork at office
- A leading engineering consulting firm seeks a Senior Water/Wastewater Process Engineer/Project Manager to lead projects in St. Louis. This role involves managing... ...teams and delivering quality services for water systems. Candidates must have a B.S. in engineering, PE registration...
- ...the world. We believe water is more than a resource... ...water and treating wastewater responsibly to developing... ...'re modernizing aging systems or pioneering... ...role of Water/Wastewater Engineer, we'll count on you to... ...decisions on significant design and engineering procedures...Full time
$100k - $140k
...important to our communities and our environment. Water/Wastewater Engineer (Municipal Projects) Shape the Future of Water... ...Engineer, you'll be at the forefront of designing cutting‑edge water and wastewater systems, playing a critical role in both the success of...InternshipLocal area- ...Senior Water Wastewater Engineer/Project Manager Growing firm with offices in multiple states is seeking a Senior... ...team in St. Louis! Responsibilities: Plan/design water and wastewater systems (pumping, process and mechanical piping, related valves and process...
- ...Saint Louis Park, Minnesota is seeking an experienced engineer and project manager to lead projects in water and wastewater systems. This position involves working closely with clients to deliver project planning, design, and operational services in a collaborative...
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