Senior Process Engineer - Water/Wastewater

Orange County, CA | On-Site | Direct Hire

Are you a Senior engineer who still enjoys solving technical problems instead of spending all day in meetings?

An established environmental and engineering consulting firm is expanding its engineering team and seeking a Senior Process Engineer to support complex industrial and municipal wastewater projects throughout Southern California. This position offers a unique blend of hands-on technical work, project leadership, mentoring, and long-term career growth.

This is an opportunity to step into a highly visible role where your technical expertise will immediately impact active projects, team development, and the future growth of an expanding engineering practice. The organization is looking for a strong technical leader who can contribute today while helping shape the next generation of engineering talent.

What You'll Do

• Lead and execute industrial and municipal wastewater projects from planning through delivery
• Perform wastewater process and systems design
• Review engineering documents, drawings, reports, and specifications
• Provide technical leadership and QA/QC oversight
• Review, approve, and stamp engineering deliverables as appropriate
• Mentor engineers and designers within a collaborative engineering team
• Support project planning, permitting, troubleshooting, and system optimization
• Interface with clients, regulatory agencies, and project stakeholders
• Help build engineering capacity and strengthen technical capabilities across the organization

Primary project focus includes:

• Industrial wastewater treatment
• Municipal wastewater treatment
• Wastewater process design
• Collection and conveyance systems
• Pump stations
• Water reuse
• Treatment and storage facilities
• Design-build projects

What Makes This Opportunity Different?

• Immediate impact on active engineering projects
• High-visibility technical leadership role
• Opportunity to mentor and develop staff
• Direct collaboration with Senior leadership
• Strong backlog of industrial and municipal wastewater work
• Growth path toward broader engineering leadership responsibilities
• Smaller company environment where ideas are heard and contributions are visible
• Flexible work hours while maintaining a collaborative office environment

What We're Looking For

Required

• Active Professional Engineer (PE) license
• Experience supporting wastewater systems and process design
• Industrial and/or municipal wastewater project experience
• Ability to review technical deliverables and provide engineering oversight
• Experience leading projects and mentoring technical staff
• Strong communication and client-facing skills
• Ability to work onsite in Orange County, California

Preferred

• California PE
• Industrial wastewater treatment expertise
• Process engineering background
• Design-build project experience
• Regulatory compliance and permitting experience
• Experience with water reuse, conveyance, pretreatment, or pump station projects
• Remediation experience (particularly for Civil PE candidates)

Compensation & Benefits

• Competitive base salary
• Performance-based bonus opportunities
• Medical, dental, and vision coverage
• Life and long-term disability insurance
• Paid holidays and PTO
• 401(k) with employer match
• Profit-sharing opportunities

Compensation is commensurate with experience, technical expertise, and wastewater process engineering depth.

Ideal Candidate Profile

The strongest candidates will bring a combination of:

• Deep wastewater process engineering expertise
• Hands-on technical capability
• Project leadership experience
• Mentorship and team-development skills
• A desire to remain technically involved while increasing their influence across projects and people

This role is best suited for engineers who enjoy solving complex technical challenges, supporting project teams, and helping build the future of an engineering organization.

This is a Permanent position based out of Orange, CA.

The pay range for this position is $150000.00 - $220000.00/yr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Health insurance 401(k) matching Paid time off Vision insurance Dental insurance Disability insurance Profit sharing Paid holidays Opportunities for advancement • Medical • Dental • Life/Long Term Disability • 10 Paid Holidays • 401(k) Retirement Plan • 5 Sick Days • 2 Weeks Vacation Benefits offered: • Medical, Dental, Vision • Life/Long Term Disability • Generous PTO policy • 10 Paid Holidays • 401(k) with match • Profit Sharing Plan • Discretionary Bonus Program

This is a fully onsite position in Orange,CA.

This position is anticipated to close on Sep 4, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

If you would like to request a reasonable accommodation, such as the modification or adjustment of the job application process or interviewing process due to a disability, please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.

Salary : $150,000 - $220,000