Process-Mechanical Engineer - California, Water

Jacobs Engineering Group Inc.; San Diego, Northern (CA, KY); Hybrid; USD 118,000 - 180,000; Full time

Benefits offered by this job

Health insurance

401(k) plan

Stock purchase program

PPTO (unlimited)

7 paid holidays

Job summary

Jacobs Engineering Group Inc. is seeking a Process-Mechanical Engineer to work on water/wastewater projects based in San Diego, CA.

The role involves collaborating with a core team to deliver innovative, technically sound solutions across studies, designs, and field assignments. The ideal candidate has a PE license and 8+ years in process-mechanical engineering for water/wastewater systems, with strong data analysis and client communication skills.

Qualifications

• PE license required.
• Minimum 8 years of progressive process mechanical engineering experience with water/wastewater.
• Strong data analysis and problem-solving ability.
• Proficient with MS Office Suite.

Responsibilities

• Evaluate pumping, treatment, and process options to determine best approaches.
• Develop facility layouts and P&IDs.
• Design for full-scale pumping, treatment systems, and improvements for construction.
• Develop construction documents, drawings and specs.
• Perform field inspection of treatment/mechanical equipment.
• Provide bidding and permitting support.

Skills

Process design

Data analysis

Client communication

Education

Bachelor's degree in Civil/Mechanical Engineering

Master's degree in Civil/Mechanical Engineering

Tools

MS Office Suite

Fathom

Pipe-Flo

Job description

Process-Mechanical Engineer - California, 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 challenge what is currently accepted, so we can shape innovative and lasting solutions for tomorrow. If you are interested in a long and rewarding career working with the industry’s best and most innovative engineering employers, then Jacobs is where you belong. We are looking for a driven and curious Process-Mechanical Engineer to work on water/wastewater projects locally in the Northwest and across the United States.

As aProcess-Mechanical Engineer based out of San Diego, CA, you will join a core group of water/wastewater and mechanical engineers and designers on studies, designs, and field assignments to deliver innovative solutions to challenging technical problems that our clients face. Your assignments will focus on water/wastewater projects but may also include broader process-mechanical engagements. You will be part of our collaborative team and aligned with Jacobs’ Infrastructure Design Department to provide the following services:

• Evaluation of pumping, treatment, and process options to determine the best approaches to solve client challenges
• Ability to understand and communicate complex problems and solutions with clients
• Planning and design for full-scale pumping, treatment systems, and treatment plant improvements for construction
• Development of facility layouts and process & instrumentation diagrams (P&IDs)
• Development of construction documents, including drawings and specifications
• Evaluation and selection of process equipment, pumping systems, pipe materials, and valves
• Data analysis and computer modeling
• Technical report writing
• Bidding and permitting services support
• Field inspection of treatment/mechanical equipment

#LI-AC2

Here’s what you’ll need

• Bachelor’s degree in civil engineering, mechanical engineering, or related engineering discipline
• Professional Engineer (PE) license
• A minimum of 8 years of progressive process mechanical engineering and project delivery experience with water, wastewater and/or industrial treatment, including planning, evaluations, and design
• Educational emphasis and a strong interest in treatment and/or mechanical system design and operation
• Self-motivation, team-oriented work practices, strong data analysis skills, technical problem-solving ability, organizational skills, and the ability to effectively multi-task in a fast-paced environment
• Proficient skills with MS Office Suite (Word, Excel, PowerPoint)

Ideally, you’ll also have:

• Master’s degree in civil, mechanical, or related engineering discipline
• 10 or more years of direct experience in municipal wastewater treatment or process mechanical for water/wastewater treatment plants, pump stations and conveyance systems experience
• Hydraulic modeling skills (e.g. Fathom, Pipe-Flo)
• Construction or facility operations experience
• Active in relevant professional organizations
• Working with and leading project teams and or managing projects
• Experience working and communicating directly with clients

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 $118,300.00 to $180,000.00. 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 September 08, 2026. 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 .