Job Details

Wastewater Treatment Or Process Mechanical Engineer

At Jacobs, we are challenging today to reinvent tomorrow by solving the worlds 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.

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 industrys best and most innovative engineering employers, then Jacobs is where you belong. We are looking for a driven and curious Wastewater Treatment or Process Mechanical Engineer to work on projects locally in Hawaii and across the Western United States and broader Pacific region.

As a Treatment and/or Process Mechanical Engineer in Hawaii, you will join a core group of wastewater engineers and designers on studies, designs, and field assignments to communicate and deliver innovative solutions to challenging technical problems that our clients face. Your assignments will focus on wastewater treatment but may also include broader process mechanical engagements. You will be part of our collaborative team to provide the following services:

• Evaluation of treatment and process options to determine the best approaches to solve client challenges
• Ability to understand and communicate complex problems and solutions with clients
• Design and implementation of pilot-scale treatment systems
• Planning and design for full-scale 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
• Construction services support
• Field inspection of treatment/mechanical equipment

Heres what youll need:

• Bachelors degree in civil engineering, mechanical engineering, environmental engineering, or related engineering discipline
• Professional Engineer (PE) license
• A minimum of 5 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, youll have:
• Masters degree in civil, environmental, 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
• Wastewater process modeling skills (e.g., Sumo, Biowin)
• 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, one floating holiday, 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 $91,400.00 to $159,900.00. 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 November 11, 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 were 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: