L&I IT Application Developer (Journey Level) Supervisor – Internal only
State of Washington
Posted: March 19, 2026 (1 day ago)
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King County
DNRP-Natural Resources & Parks
Location
Seattle, Washington, 98104
Salary
$59.06 - $74.86
per hour
Type
Full-Time
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This job is for an engineer who helps design and improve wastewater systems, like pipes, pump stations, and treatment plants, to keep water clean for over 2 million people in King County.
You'll work on big projects worth hundreds of millions, get training from experienced engineers, and join a team focused on environmental protection and community equity.
It's a great fit for someone passionate about sustainability, teamwork, and making a real impact on clean water.
This opportunity is open to current King County employees.
We are not accepting external applications at this time.
This Journey level engineer position is an opportunity to work on a fun and collaborative team who is dedicated to water quality, process improvement and producing quality designs to improve the Wastewater Treatment Divisions (WTD) Conveyance and Treatment Systems.
About the Role:
Candidates will be involved in conveyance projects, pump station upgrades, and treatment plant upgrades. We are seeking Civil, Mechanical, and Instrumentation and Control Engineers.
You will work with Senior Level Engineers who will mentor and train you to produce designs, technical specifications, technical reports and contract document that will help us deliver our Capital Improvement Plan that is valued over $400 Million per year.
This position follows a hybrid work model,blending remote and in-person work.
The King County Wastewater Treatment Division is responsible for centralized wastewater treatment for all of King County and conveying sewage from Cities and Sewer Districts in King County to our regional treatment plants.
This position will be in our Engineering and Technical Resources Unit who are a fun and talented group of engineers, technical professionals, and designers who work to accomplish our Capital Improvement Program.
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 Journey - Wastewater Engineer, you will actively apply these principles in all aspects of your work. Learn more about our commitment at http://www.kingcounty.gov/equity.
Provide basic engineering designs and assist in complex wastewater engineering designs for new construction projects and repairs and modifications to existing facilities.
Assist in preparing wastewater project work plans, schedules, and budgets; assemble technical information for use by the project teams and journey/senior/principal engineers.
Assist in reviews of consultant pre-design and final design documents. Validate cost estimates including technical assumptions and cost factors.
Assist in the procurement process for consultants, equipment, and construction work.
Assist in reviewing consultant design work to identify and resolve potential design coordination conflicts between disciplines; ensure that design standards and code requirements have been implemented.
Provide technical assistance during construction, including submittal reviews, RFI responses, and construction inspections.
A bachelor's degree in engineering is required.
Demonstrated knowledge of mathematics, physical and engineering sciences and the principles and methods of engineering analysis and design
Engineer-In-Training certification
Four years of engineering work experience.
Familiarity with wastewater and/or industrial facilities and construction principles and techniques are preferred.
Mechanical / Chemical / Civil Engineers: Basic knowledge of hydraulic calculations
Instrumentation & Control System Engineer: Basic knowledge of measurement instruments and digital logic.
Ability to work with a diverse group of individuals from consultants, Operations and Maintenance, other County staff, and other stakeholders is essential in ensuring that project schedules and contracts follow County standards.
Working Conditions:
Work Location: The Engineering team works in a hybrid model, with days in the office as well as telecommuting. The ratio of remote to onsite work will be dependent on business needs and is subject to change. The primary onsite location is King Street Center - 201 S Jackson St, Seattle, Washington 98104. Employees must reside in Washington state and within a reasonable distance to their King County worksite to respond to workplace reporting requirements. King County has a robust collection of tools and resources to support working remotely. The individual selected for this opportunity will join an innovative and progressive team that is redefining how we work as we transition to the department's hybrid environment. Employees will be provided with a County-issued laptop and must maintain a home workspace with an internet connection where they can reliably perform work and remain available and responsive during scheduled work hours.Application and Selection Process:
We welcome applications from all qualified internal 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)
To apply, submit a:
Note: Additional documents won't be considered during minimum qualification screening.
Who to Contact: For more information regarding this recruitment, please contact Mark Workinger at Mworkinger@kingcounty.gov
Discover More About the Wastewater Treatment Division: Visit our website and check us out atFacebook, X (formerly Twitter), Instagram, YouTubeand ourWTD Blog.
Discover More About DNRP: Visit our 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.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.
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