Mid Level Wastewater Treatment Engineer Jobs
Mid level wastewater treatment engineer jobs go to engineers ready to own projects end to end, guide junior staff, and make technical calls without constant oversight. Openings run predominantly on-site across Consulting & Professional Services, with employers like Kennedy/Jenks Consultants hiring at this level now.
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INTRODUCTION
Founded in 1919, KJ has always looked to the future. With a talented team of professionals and a culture of continuous improvement, we deliver exceptional engineering, environmental consulting, and construction management services, with a focus on innovation and sustainability. Using advanced analytics, technology, and tools, KJ improves designs, reduces risk, and finds better ways to deliver projects from planning through construction. KJ is at the forefront of developing sustainable solutions for clients, including green infrastructure design, strategies to reduce energy use and environmental impacts, award-winning water reuse projects, and efficient construction management practices that ensure quality, safety, and on-time delivery. We are known for our dedication to industry-leading client service and tailored solutions.
ABOUT THE ROLE
Kennedy Jenks is seeking a Municipal Wastewater Treatment Engineer to join our Northern California team and contribute to municipal wastewater treatment projects locally and nationally. This role offers the opportunity to work on technically challenging projects, apply your engineering expertise, and collaborate with multidisciplinary teams. Candidates who are ready to take on increasing technical responsibility, grow in their career, and contribute to complex solutions are encouraged to apply.
KEY RESPONSIBILITIES
- Contribute to the design and delivery of wastewater treatment and infrastructure projects, including feasibility studies, facility planning, and treatment plant upgrades.
- Perform process design for physical, chemical, and biological wastewater treatment systems, with guidance and increasing independence.
- Prepare technical deliverables, including calculations, drawings, specifications, and design reports.
- Collaborate with project teams, clients, and regulatory agencies to support project objectives, technical discussions, and compliance requirements.
- Assist with developing project scopes, budgets, and schedules.
- Provide mentorship and guidance to junior staff where appropriate, and learn from senior engineers and project leads.
- Stay current on industry standards, emerging technologies, and regulatory requirements.
BASIC QUALIFICATIONS
- BS or MS in Civil, Environmental, or Chemical Engineering, or related degree
- 5+ years of experience in municipal wastewater treatment engineering
- Engineer-in-Training (EIT) or Professional Engineer (PE) license; PE preferred or ability to obtain
- Strong analytical, problem-solving, and technical communication skills
- Ability to collaborate effectively with multidisciplinary teams and clients
Kennedy Jenks supports a healthy work-life balance and utilizes a hybrid model of home and office work, with a minimum of two days per week in the office. This approach empowers our people to thrive, collaborate, and achieve their full potential.
COMPENSATION
- Salary range for this position is expected to be between $120,000 and $210,000, and may vary based upon education, experience, qualifications, licensure/certifications, and geographic location.
- This position is eligible for performance and incentive compensation.
BENEFITS SUMMARY:
Kennedy Jenks offers a comprehensive benefits package, including medical, dental, vision, life and disability insurance, 401k, bonus opportunities, tuition reimbursement, professional registration support, a competitive PTO and holiday plan, and other benefits and programs.
LI-hybrid
Kennedy Jenks is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, sex, pregnancy and pregnancy-related conditions, sexual orientation, gender identity, national origin, age, marital status, disability, citizenship status, genetics, protected veteran status, or any other characteristics protected by applicable law.
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Who's Hiring

Top Industries Hiring
- Consulting & Professional Services
Mid Level Wastewater Treatment Engineer Jobs: Frequently Asked Questions
How do I get a mid level wastewater treatment engineer job?
Position your experience around project ownership, not just task completion. Highlight specific systems you have operated or optimized, permits you have supported, and any time you coordinated across teams or guided less experienced engineers. Applications that tie your work to measurable outcomes, such as improved effluent quality or reduced downtime, stand out at this level.
Which companies hire mid level wastewater treatment engineers?
Companies hiring mid level wastewater treatment engineers right now include Kennedy/Jenks Consultants, based on current listings on Migrate Mate as of November 2026. Hiring at this level comes from municipal utilities, environmental engineering consultancies, and industrial operators running their own treatment infrastructure.
Are there remote mid level wastewater treatment engineer jobs?
Yes, though most roles at this level are site-dependent. About 100% of mid level wastewater treatment engineer openings are remote or hybrid as of November 2026, and those tend to be with consulting firms where design work, permitting support, and client reporting can be handled off-site rather than at a treatment facility.
How do I move up to a mid level wastewater treatment engineer role?
The path from entry level to mid level is built on progressively broader ownership. Early-career engineers grow by taking full responsibility for individual process units, then entire treatment trains, earning sign-off on routine decisions. Deepening expertise in a specific area, such as biological nutrient removal or biosolids management, combined with a clear record of project delivery, signals readiness for a mid level title.
Which industries hire the most mid level wastewater treatment engineers?
Mid Level wastewater treatment engineer roles concentrate in Consulting & Professional Services, based on current listings on Migrate Mate as of November 2026. Those sectors drive the most hiring because they operate large, continuously running treatment systems that require experienced engineers who can manage process upsets, lead upgrades, and ensure regulatory compliance without close supervision.