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Process Mechanical Engineer

Jacobs
full-time
St. Louis, MO
Posted 3/26/2026
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Job Description

Market

Water

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good.

Your impact

We share a common purpose – to make the world more connected and sustainable. And we’re excited about the innovative ways we can change the world. If you are also interested in turning abstract ideas into realities that transform the world for good, then Jacobs is where you belong. We are looking for a passionate and dedicated Process Mechanical Lead Engineer in Missouri. As part of our team, you’ll have the chance to work on projects that bring innovative solutions to our municipal clients’ water and wastewater challenges locally and worldwide.

As our Missouri Process Mechanical Lead Engineer, you’ll be charged with planning, preliminary, and detailed design of water and wastewater pumping stations and treatment plants across Missouri and the region. This will include specifications and plan development associated with pumping stations and treatment plant upgrades and expansions. You will be preparing general arrangement drawing for treatment equipment and tanks, designing piping and pumping systems as well as provide oversight of construction. You’ll also evaluate and select equipment, piping materials and valves, assist with facility layouts, develop calculations, process flow diagrams, P&IDs and construction documents. In addition, you’ll coordinate with other project disciplines, direct the work of CAD designers, and produce construction documents. Using your leadership skills, you’ll be part of a team engaged in delivering some of the most exciting projects in the region and beyond. You’ll serve on projects as the Process Mechanical Discipline Lead which is one of the most important roles on a design project. You’ll oversee process mechanical teams and provide overall leadership to projects. This role will also serve as the point of contact for our process mechanical practice which will include collaborating within the community of practice, setting standards and best practices within our region, most importantly, mentoring and growing our team. At Jacobs, you’ll also have the chance to work across all of our core water technical areas which are Drinking Water & Reuse, Municipal Wastewater, Distribution and Conveyance, Water Resources, and Industrial Water.

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Here's what you'll need

• Bachelor’s Degree in Civil, Environmental, Mechanical Engineering, or similar degree from an accredited university or college • Minimum of 7 years of experience in various aspects of process mechanical design of water and wastewater systems • Holds an active professional engineering (PE) license with ability to obtain Missouri license within 6 months • Experience and familiarity with National Building Codes, EPA regulations, and 10 States Standards. • Capable of working in a team environment, including giving and receiving critical feedback • Strong and effective verbal and written communications skills • Successful experience with working and managing remote domestic and international staff • Proficiency with Microsoft Office Suite Ideally, You’ll Also Have: • 10+ years’ experience in industrial, water, or wastewater process mechanical engineering. • Proficiency in hydraulic modeling software such as Pipe-Flo • Developing process flow diagrams to define mass balance • Participating in planning, cost development and management, and scheduling for assigned projects • Working with construction management staff to ensure that construction, installation, and operational testing conform to specifications, codes and standards, and client requirements • Experience during construction including installation, startup, and/or troubleshooting is a plus • Proficiency in Autodesk design suite is a plus.

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Posted Salary Range: Minimum

105,000.00

Posted Salary Range: Upper

145,000.00

Our health and welfare benefits are designed to invest in you, and in the things you care about. Your health. Your well-being. Your security. Your future. Employees have access to medical, dental, vision, and basic life insurance, a 401(k) plan, and the ability to purchase company stock at a discount. Eligible employees may also enroll in a deferred compensation plan or the Executive Deferral Plan. Jacobs has an unlimited U.S. Personalized Paid Time Off (PPTO) policy for full-time salaried/exempt employees, seven paid holidays, and caregiver leave. And certain roles may be eligible for additional rewards, including merit increases, performance discretionary bonus, and stock.

The base salary range for this position is $105,000.00 to $145,000.00. Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant education or training.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. Job posted on January 16, 2025. This position will be open for at least 3 days.

We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work.

Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.

Locations

CityStateCountry Kansas CityMissouriUnited States St. LouisMissouriUnited States St. LouisMissouriUnited States

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About the job

Job Type

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Location

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