Wastewater Maintenance Supervisor, Mechanical - SP

Summary

This position is open to all qualified candidates.

This recruitment aims to fill three Wastewater Maintenance Supervisor positions.

About the Role:
Are you looking for an opportunity to lead a highly diverse team of Maintenance professionals and be a part of creating the strategic direction for a complex wastewater system? The Wastewater Treatment Division (WTD) in King County (KC) is hiring a leader for the South Plant mechanical team. This position will lead a team of treatment plant and offsite mechanical staff, oversee the preventative and corrective maintenance of the East Section facilities, and be an active member of the O&M Leadership team.

The responsibilities of this classification include supervising and directing the overall mechanical maintenance teams and program(s) for the South Plant and Brightwater wastewater treatment plant and East Section Offsite facilities. Maintenance programs include but are not limited to the repair, replacement, and preventative maintenance of industrial instrumentation equipment, electrical and instrumentation control systems. Incumbents supervise and direct the work of lead, skilled trades, semi-skilled trades, engineering, and technical support positions. Incumbents also assist the treatment plant manager in the development, implementation, and revision of short- and long-term goals and objectives for the plant’s operation and maintenance.
The primary function of this role is to lead, direct, and supervise the team members (maintenance mechanics, engine mechanics, offsite maintenance mechanics) assigned to the Mechanical Maintenance team for East Operations and Maintenance units.

As a Wastewater Maintenance Supervisor, Mechanical within the Operations and Maintenance team you are expected to be a “People Leader” to lead and develop your team to align with the County and WTD leaderships goals, expectations, standards, and initiatives. You will be a mentor and guide to those working within your team and those that work with your team.
About the Team:
Working for KC WTD, provides you a work-life balance and benefits to support you and your family. You will also gain opportunities for growth through trainings, conferences hosted by leaders in the industry, and working across functional groups within the Division. Join our team dedicated to ensuring clean water for generations to come! With about 1000 employees engaged in planning, designing, building, and operating treatment facilities, our agency is at the forefront of environmental stewardship. Success for us means upholding our legacy while promising future generations a pristine environment.

We partner with regulatory agencies to reduce harmful waste discharge and actively educate the public and businesses on water quality protection. We prioritize accountability to our ratepayers and operate a well-managed agency that services over 2.3 million King County residents . Our regional wastewater treatment system not only sustains a healthy environment but also fuels economic development, fostering prosperity in our region. If you're passionate about making a difference and thrive in a collaborative environment, join us in our mission to safeguard our precious water resources.

Commitment to Equity, Racial and Social Justice:
King County, named after Dr. Martin Luther King, Jr., is a diverse and vibrant community that represents cultures from around the world. Our True North is to create a welcoming community where everyone can thrive. We prioritize equity, racial and social justice, making it a foundational and daily expectation for all employees. As a Wastewater Maintenance Supervisor, Mechanical you will actively apply these principles in all aspects of your work. Learn more about our commitment at http://www.kingcounty.gov/equity .

Apply now for a rewarding career at the Wastewater Treatment Division of King County Department of Natural Resources & Parks (DNRP). Join our talented workforce in protecting and restoring the natural environment and promoting more resilient, sustainable, and equitable communities. Enjoy training, comprehensive benefits , and growth opportunities.

Job Duties

What You Will Be Doing :

• Supervise and direct the work of lead, skilled trades, semi-skilled trades, engineering, and technical support positions assigned to the maintenance program. Supervisory responsibilities include hiring, conducting performance evaluations, training, and recommending disciplinary actions.
• Supervise the review and coordination of preventative and maintenance practices including life cycle analysis of equipment and forecasting short- and long-term equipment needs, equipment replacement and repairs.
• Develop and implement the work unit’s operating and capital budgets; make recommendations on budget expenditures and monitor expenditures to ensure that budget is within established guidelines.
• Develop, implement, and maintain internal maintenance business policies and procedures for all equipment and systems at the treatment plant.
• Represent the section and/or division on capital replacement, expansion, and new facility projects.
• Act as the maintenance representative on capital improvement projects to provide input and direction on what the maintenance requirements will be for the designated project.
• Provide technical expertise on maintenance related issues that arise during the development, implementation, and start-up of assigned projects.
• Participate in the planning, development, and implementation of systems and/or processes to support the maintenance program at the treatment plant.
• Participate as a member of the section or division management team and act as the section or division management representative on internal and external committees.

Experience, Qualifications, Knowledge, Skills

Qualifications You Bring:

• Advanced knowledge of and demonstrated experience in a skilled trade or craft occupation, or the equivalent combination of education and experience in a technical discipline such as engineering.
• Advanced knowledge of and demonstrated experience in life cycle analysis of industrial equipment, electrical and/or instrumentation systems or processes.
• Knowledge of and demonstrated experience in maintenance techniques and practices in an industrial environment.
• Strong knowledge of pumps, motors, HVAC systems, SCADA systems, and instrumentation.
• 3 or more years of experience in maintenance and repair of equipment used in wastewater treatment facilities
• At least 3 years’ experience in a lead capacity or supervisory role (preferred), overseeing industrial maintenance crews.
• Preventive maintenance programs and asset management systems.
• Ability to effectively supervise staff.
• Ability to develop and support in house training for assigned staff.
• Ability to troubleshoot mechanical and electrical systems.
• Communicate effectively and prepare reports.
• Ensure employee safety compliance within established guidelines and regulations.

Competencies You Bring :

• Strategic Mindset - Seeing ahead to future possibilities and translating them into breakthrough strategies.
• Action Oriented - Taking on new opportunities and tough challenges with a sense of urgency, high energy, and enthusiasm.
• Manages Conflict - Handling conflict situations effectively, with a minimum of noise.
• Ensures Accountability - Holding self and others accountable to meet commitments.
• Racially Just - Identify and replace racists systems and structures with anti-racists and pro-equity approaches.

It Would Be Great if You Also Bring:

• Prior or current wastewater maintenance supervisor experience or 3 years of industrial maintenance lead responsibilities
• Demonstrable experience with Capital Project teams and other work groups, consultants, or contractors.
• Experience with CMMS systems and how to utilize extrapolated data.
• Practical and progressive experience in an industrial maintenance setting, craft, or trade
• Managing budgets and Capital project support
• Demonstrated experience in planning, scheduling, coordination and prioritization.
• Strong mechanical, machining, welding background and experience

Supplemental Information

Working Conditions:

• Work Details: Maintenance Supervisor works on-site at South Treatment Plant 1200 Monster Road S.W., Renton or Brightwater Treatment Plant 22505 WA-9, Woodinville, WA 98072 . On occasion you will need to work at other King County worksites including the collaboration space at King Street Center (201 S. Jackson St, Seattle, WA 98104).
  
• Requirement: Employees must reside in Washington State and be within a reasonable distance to King County worksites.
  
• Work Schedule: This position is exempt from the overtime provision of the Fair Labor Standard Act (FLSA) and is not overtime eligible.
• Union Representation: This position is represented by the Teamster, Local 117. Pursuant to Western Conference of Teamsters Pension Trust $1.00 per hour from the base wage will be submitted to the Western Conference of Teamsters Pension Trust Fund.
• Physical Requirement: Must be able to physically move in and around county worksites such as treatment plants, regulator stations, pump stations to observe work and participate in work and project planning.
  Must be able drive unencumbered to different locations throughout the service area as required.
• Workplace Exposures: Potential exposure to wastewater treatment process areas, treatment chemicals, biological processes, sludges, waters. Potential exposure to high noise areas.

Application and Selection Process:
We welcome applications from all qualified candidates. We value diversity, diverse perspectives and life experience and encourage people of all backgrounds to apply. Application materials will be screened for clarity, completeness and alignment with the experience, qualifications, knowledge, and skills essential for this role to determine which candidates may be invited to participate in one or more panel interviews.

Anticipated Timeline for this recruitment : (subject to change )

• Technical Vetting Interviews: March 30th & April 6th, 2026 (tentative)
  
• P anel interviews: April 14th & 15th, 2026 (tentative)
  

To apply, submit a:

• Complete Application
• Resume
• Cover Letter
• Responses to the supplemental questions

Note: Additional documents won't be considered during minimum qualification screening.

W ho to Contact: For more information regarding this recruitment, please contact Emiliya Makaryan at emiliya.makaryan@kingcounty.gov

Discover More About the Wastewater Treatment Division: Visit our website and check us out at Facebook , X (formerly Twitter) , Instagram , YouTube , and the WTD Blog .

Discover More About DNRP: Visit our DNRP website , explore an interactive map of our recent accomplishments and check us out at Facebook , X (formerly Twitter) , LinkedIn , TikTok , Instagram , YouTube and Keeping King County Green News .

Sign up for Job Alerts to be notified of additional career opportunities with King County. Select the Natural Resources category for DNRP opportunities and explore other categories of interest.

Forbes named King County as one of Washington State's best employers.
Together, with leadership and our employees, we're changing the way government delivers service and winning national recognition as a model of excellence. Are you ready to make a difference? Come join the team dedicated to serving one of the nation's best places to live, work and play.

Guided by our "True North" , we are making King County a welcoming community where every person can thrive. We value diversity, inclusion and belonging in our workplace and workforce. To reach this goal we are committed to workforce equity. Equitable recruiting, support, and retention is how we will obtain the highest quality workforce in our region; a workforce that shares and will help advance our guiding principles - we are one team; we solve problems; we focus on the customer; we drive for results; we are racially just; we respect all people; we lead the way; and we are responsible stewards. We encourage people of all backgrounds and identities to apply, including Native American and people of color, immigrants, refugees, women, LGBTQ+, people living with disabilities, and veterans.

King County is an Equal Employment Opportunity (EEO) Employer
No person is unlawfully excluded from employment opportunities based on race, color, religion, national origin, sex (including gender identity, sexual orientation and pregnancy), age, genetic information, disability, veteran status, or other protected class. Our EEO policy applies to all employment actions, including but not limited to recruitment, hiring, selection for training, promotion, transfer, demotion, layoff, termination, rates of pay or other forms of compensation.

To Apply
If you are interested in pursuing this position, please follow the application instructions carefully. If you need this announcement in an alternate language or format, would like to request accommodation or assistance in the application or assessment process or if you have questions, please contact the recruiter listed on this job announcement.

King County offers a highly-competitive compensation and benefits package designed to meet the diverse needs of our employees and support our employees' health and well-being. Eligible positions receive the following benefits and have access to the following programs:

• Excellent medical, dental, and vision coverage options: King County provides eligible employees with options, so they can decide what’s best for themselves and their eligible dependents
• Life and disability insurance: employees are provided basic coverage and given the opportunity to purchase additional insurance for both the employee and eligible dependents
• Retirement: eligible King County employees may participate in a pension plan through the Washington State Department of Retirement Systems and a 457(b) deferred-compensation plan
• Transportation program and ORCA transit pass
• 12 paid holidays each year plus two personal holidays
• Generous vacation and paid sick leave
• Paid parental, family and medical, and volunteer leaves
• Flexible Spending Account
• Wellness programs
• Onsite activity centers
• Employee Giving Program
• Employee assistance programs
• Flexible schedules and telecommuting options, depending on position
• Training and career development programs

For additional information about employee benefits, visit our Benefits, Payroll, and Retirement Page .

This is a general description of the benefits offered to eligible King County employees, and every effort has been made to ensure its accuracy. If any information on this document conflicts with the provisions of a collective bargaining agreement (CBA), the CBA prevails.

NOTE: Benefits for Term Limited Temporary (TLT) or Short Term Temporary (STT) positions, including leave eligibility and/or participation in the pension plan through the Washington State Department of Retirement Systems, will vary based upon the terms and details of the position. Short Term Temporary positions are not eligible for an ORCA transit pass.

For inquiries about the specifics of this position, please contact the recruiter identified on this job posting.

Closing Date/Time: 3/20/2026 11:59 PM Pacific

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• King County Wastewater Treatment Division

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