Industrial Maintenance Mechanic/Master - South Plant

Summary

This position is open to all qualified candidates

About the Role

Join a team of journey-level mechanics performing repair and troubleshooting for both planned and unscheduled maintenance. In this role, you will perform and assist with a variety of mechanical maintenance tasks while developing your skills in an industrial environment.

This position offers excellent benefits and job security in a unionized setting. Employees who are actively engaged in their professional growth have opportunities for advancement to Industrial Mechanic-Master, as well as potential leadership roles as they become available.

Working as part of a team, this person will apply their maintenance experience to perform high-level repairs on a variety of rotating mechanical equipment, including-but not limited to-biosolids decanting blowers, influent and effluent pumps, biogas scrubbing compressors, gearboxes, conveyance systems, and multiple piping systems.

The ideal candidate is goal-oriented and contributes to a safe, collaborative, and positive work environment. They will support a team culture focused on effective communication, working closely with other groups, and following good shop practices to maintain a high standard of workmanship.

With about 1000 employees engaged in planning, designing, building, and operating treatment facilities, King County’s Wastewater Treatment Division is at the forefront of environmental stewardship. We enforce regulations 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 serves 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 protect public health and the environment by collecting and cleaning wastewater while recovering valuable resources for a healthy and resilient Puget Sound.

About the Team

Employees in WTD play a key role in the environmental stewardship of the local community while maintaining a healthy work-life balance. This position provides the opportunity to work collaboratively on major projects and repairs involving pumps, piping, gearboxes, and other critical plant equipment.

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 an Industrial Maintenance Mechanic/ Master you will actively apply these principles in all aspects of your work. Learn more about our commitment at http://www.kingcounty.gov/equity

Job Duties

What you will be doing;

Maintain, Repair, and Troubleshoot Equipment

• Perform maintenance, troubleshooting, repair, and overhaul of a variety of complex machinery used in plant operations.

Install and Maintain Piping and Plumbing Systems

• Install, repair, and maintain piping and plumbing systems for sewage, water, gases, chemicals, and solids using appropriate materials.
• Fabricate and install metal fixtures, including vents, air ducts, doors, louvers, containers, equipment covers, machinery bases, and support members.

Fabrication and Welding

• Design, fabricate, and repair plant piping, equipment guards, and bases.
• Use welding equipment, including metal inert gas (MIG), tungsten inert gas (TIG), arc welding, cutting torches, plasma cutters, and plastic welders.

Planning and Documentation

• Plan equipment repairs using blueprints, engineering drawings, computer-aided design (CAD), Maintenance Information Management System (MIMS), operations and maintenance manuals, vendor data, catalogs, and other resources.
• Collaborate with CAD personnel to provide as-built drawings to support parts/material ordering, equipment assembly, and modifications.

Other Duties

• Perform other duties as assigned to support plant operations and maintenance.

Experience, Qualifications, Knowledge, Skills

Qualifications you bring;

• Knowledge and hands-on experience maintaining, troubleshooting, and repairing pumps, motors, valves, and other rotating equipment used in industrial or wastewater systems
• Skill in safely using hand and power tools, precision measuring instruments, and machine tools (lathes, mills, drill presses); ability to perform basic welding and fabrication for equipment repair.
• Ability to understand and apply information from blueprints, schematics, manuals, and preventive maintenance procedures.
• Knowledge of industrial safety standards, including lockout/tagout, confined space entry, and proper handling of hazardous materials.
• Ability to work collaboratively with coworkers and other trades; communicate effectively in writing and verbally; and accurately document work in a computerized maintenance management system (e.g., Maximo).

Competencies you bring;

Decision Quality: Making good and timely decisions that keep the organization moving forward.
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.
Collaborates: Building partnerships and working collaboratively with others to meet shared objectives.
Interpersonal Savvy: Relating openly and comfortably with diverse groups of people.
Values Differences: Recognizing the value that different perspectives and cultures bring to an organization.
Communicates Effectively: Developing and delivering multi-mode communications that convey a clear understanding of the unique needs of different audiences.
Self-Development: Actively seeking new ways to grow and be challenged using both formal and informal development channels.
Being Resilient: Rebounding from setbacks and adversity when facing difficult situations.
Situational Adaptability: Adapting approach and demeanor in real time to match the shifting demands of different situations.

It would be great if you also bring;

• Knowledge of and experience with plumbing, pumps, hydraulics, welding, and rigging techniques and principles
• Experience in heavy equipment mechanical maintenance, including repairs and understanding replacement criteria.
• Knowledge of and experience applying industrial safety standards and procedures related to mechanical maintenance.
• Strong oral and written communication skills, with the ability to read, write, and follow instructions accurately.
• Experience with equipment operation, installation, and commissioning.

Supplemental Information

Working Conditions:

• Work Details: The O&M team works on site at the South Treatment Plant 1200 Monster Rd SW, Renton, WA 98057, USA.
• Requirement: Employees must reside in Washington State and be within a reasonable distance to King County worksites to meet onsite reporting requirements.
• Work Schedule: This position is covered under the provisions of the Fair Labor Standards Act (FLSA) and is overtime eligible.
• Union Representation: This position is represented by SEIU Local 925 - Wastewater Treatment Division
• Physical Requirement: Must be able to work flexible hours and report to the plant during adverse or inclement weather conditions. Perform field work at a wastewater treatment plant and associated facilities. Lift and carry equipment weighing up to 50 pounds. Work in confined spaces and climb in and out of tanks using ladders. Work safely around high noise levels and exposure to noxious odors.
• Workplace Exposures: Work in all weather conditions in an industrial wastewater environment. Exposure to chemicals, biohazards, and other potentially hazardous material. Frequent exposure to loud noise; hearing protection required. Entering and working in confined spaces. Use of respirators and other personal protective equipment (PPE) as required.

Application and Selection Process:
We welcome applications from all qualified applicants. 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 interview: Virtual interviews will be held in February 2026
• Panel interview: Virtual interviews will be held the held in February 2026

To apply, submit a:

• Complete Application
• Resume (Required)
• Cover Letter (Required)
• Responses to the supplemental questions

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

Who to Contact: For more information regarding this recruitment, please contact danilee @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
• 12paid holidays each year plus twopersonal 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: 2/10/2026 11:59 PM Pacific

• 

• King County Water and Land Resources Division

• 206-477-4800

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