Senior Building Mechanical Engineer (Water)

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

As a Building Mechanical Engineer , based out of California , you’ll be at the cutting edge of our efforts to bring innovation and excellence to some of the most exciting infrastructure projects in the region. You’ll use your exceptional design and analytical skills to lead the planning and design of mechanical (plumbing, HVAC, odor control, and fire protection) systems primarily for municipal facilities for water and wastewater projects, but you’ll also contribute to federal, industrial, and institutional projects.

You’ll prepare design drawings and specifications for submission to clients, as well as provide jurisdictional plan checks and permitting support. Engineered systems you’ll be working with include plumbing systems, HVAC package systems, central plants, air distribution, hydronic systems, odor control systems, and associated controls.

You’ll also have the opportunity to:

• Design complete plumbing systems, including utility and potable water distribution systems, drainage systems, and miscellaneous systems such as compressed air and natural gas.
• Design complete HVAC systems, including package type and central plants.
• Design odor control systems, including vapor and liquid phase treatment technologies.
• Design fire protection systems using a performance system approach.
• Prepare calculations for plumbing systems, including water and drainage flows, water heater sizing, and pump sizing and selection.
• Perform calculations for design, such as air loads, pipe/duct/equipment sizing, ventilation requirements, static pressure, odor removal, life-cycle costs, and energy analyses.
• Select equipment, coordinate with equipment vendors, and edit specifications.
• Conduct field evaluations and develop as-built drawings.
• Develop master plans and perform field investigations.
• Conduct technology alternatives analyses using multi-criteria analysis tools for selecting odor control systems.
• Manage and coordinate work with architects, technicians, and engineers of other disciplines.
• Attend meetings and communicate with clients, vendors, and other project stakeholders to establish project needs and discuss design issues.
• Manage quality and schedule of work and interface with clients.
• Support field staff during construction phase of projects, including responding to submittal reviews and requests for information.
• Provide design guidance and mentorship to designers/drafters and less experienced engineers.

#LI-AC2

Here's what you'll need

• Bachelor’s degree in Mechanical Engineering, Chemical Engineering. or other Engineering field.
• 8-15 years of professional experience in related work in the industry.
• California Professional Engineering (PE) License, or ability to obtain immediately upon hire.
• Experience producing plumbing, HVAC, odor control, fire protection design drawings and specifications for construction, as the Building Mechanical Engineer will work in all stated disciplines.
• Working knowledge of applicable building codes and standards such as ASHRAE, NFPA, SMACNA, IBC, etc.
• Proficient writing skills and experience preparing technical specifications and reports.
• Willingness to learn new skills and practices as needed.

Ideally, you'll also have:

• Bachelor's degree is from an ABET accredited institution.
• Carrier HAP or Trane Trace experience.

Please note the salary range below, reflects the minimum and maximum target for new hire salaries for this position across all US locations.

Posted Salary Range: Minimum

110,600.00

Posted Salary Range: Upper

209,000.00

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 $110,600.00 to $209,000.00. 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 March 17, 2026. This position will be open for at least 3 days.

Qualified applicants with criminal histories will be considered for employment

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

City State Country
Sacramento	California	United States
San Francisco	California	United States
Oakland	California	United States
San Jose	California	United States
Irvine	California	United States
Los Angeles	California	United States
San Diego	California	United States
Redding	California	United States