Salary: $62.48 - $79.20 Hourly
Location : King Street Center - 201 S Jackson St, Seattle, WA
Job Type: Career Service (Exec)
Job Number: 2026TH23005R2
Department: DLS - Dept. of Local Services
Division: Road Services
Opening Date: 08/28/2026
Closing Date: 9/27/2026 11:59 PM Pacific
FLSA: Non-Exempt
Bargaining Unit: C1 : PROTEC17-DES, DLS, DNRP
Full- or Part-Time: Full Time
Hours/Week: 40 hours/week

Summary

King County Road Services Division has a unique opportunity for you to play an important role in making positive changes to our local environment!
Join a team that is shaping the future of safe, efficient travel across King County. We are looking for a dynamic individual to join our team as a Traffic Supervising Engineer IV.
In this role, you'll lead quality assurance for traffic elements in key capital and countywide projects, drive innovative field and office studies to evaluate and advance traffic control technologies, and guide our Traffic Count Program to ensure we meet evolving standards. If you're passionate about making real-world impact through smart transportation systems and enjoy leading skilled teams, this is an opportunity to help define how our community moves.

Job Duties

Applyingequity and social justice principlesis a daily responsibility and a foundational expectation for all King County employees. In this role, you will apply equity and social justice principles that exemplify shared values, behaviors, and practices to all aspects of the work.

To be considered for this opportunity, you must at a minimum, demonstrate knowledge, skill, and ability to:

• Supervise field and office work for traffic safety investigations and responses to citizen traffic-related requests.
• Oversee the High Crash Location Reporting, road closures and work zone traffic control, channelization design, pavement markings and striping, School Safety Program activities, traffic operations analysis.
• Provide QA/QC for traffic elements for assigned capital and countywide projects.
• Oversee discretionary traffic services for contract cities.
• Perform or supervise in-house traffic studies and analyses, including review of consultant work.
• Oversee collision coding, processing, and development of the Annual Traffic Safety Report.
• Supervise staff supporting countywide Guardrail Programs.
• Review Special Use Permit applications for special events such as bike races, fun runs, parades, etc.
• Review legislative documents and provide recommendations.
• Provide litigation support to the PAO as needed.
• Perform other duties as assigned

Experience, Qualifications, Knowledge, Skills

• Bachelor of Science in Civil Engineering (BSCE) or closely related field
• Seven years (7) of professional traffic operations experience involving planning, engineering, and operational needs of roadway systems.
• Five years (5) of progressively responsible supervisory experience, including hiring, work assignment oversight, performance evaluations, decision-making, and conflict resolution.
• Experience interpreting and applying technical standards and guidelines such as the MUTCD, WSDOT Design Manual, FHWA and AASHTO standards, KCRDCS (or similar), and ITE Recommended Practices.
• Experience researching and interpreting applicable codes, policies, regulations, and transportation-related laws at the federal, state, and local levels.
• Experience using traffic analysis methods for roadway channelization design and traffic calming applications.
• Experience conducting field evaluations and reviews, including providing recommendations for project scope and construction cost estimates.
• Ability to communicate clearly and effectively in both oral and written formats, including in politically sensitive situations and when working with officials, the public, partner jurisdictions, and internal and external staff.
• Ability to work effectively with diverse individuals, customers, and stakeholders while maintaining strong working relationships.
• Ability to make presentations and provide testimony related to claims and lawsuits.
• Skilled in adapting to frequently changing work responsibilities.
• Skilled in using Microsoft Office applications such as Access, Excel, Word, PowerPoint, and Project.
• Ability to perform duties as assigned

Necessary Requirements:

• Professional Engineering (PE) License
• Valid Washington State Driver's License or ability to get one within 6 months of employment

Desirable Requirement:

• Professional Traffic Operations Engineering (PTOE) License

Supplemental Information
WORK CONDITIONS:

• Work performed in the field for extended periods of time may be performed under unfavorable weather conditions.
• Works outdoors, which may require walking on uneven, rocky or rough ground, or working in inclement weather.
• May work in an active traffic environment
• Required to sit, talk, listen and hear; frequently required to use hands to finger, feel or handle writing utensils, computer and office supplies which require repetitive arm, wrist and hand movement.
• Sometimes it is required to stand and reach with arms and hands. Specific vision abilities include close, distant, color, and physical activity including but not limited to lifting up to 25 lbs. at least waist height; carrying and moving objects.
• Work adjacent to or on large equipment, with moving parts, subjected to loud noise and vibration.

INTERVIEW SCHEDULE: The first review of applications will take place the week of September 28, 2026. Applicants that pass the initial screening will be invited for an interview the following week.

WHO MAY APPLY: This position is open to all qualified applicants and may be used to fill current and or/future career service, term-limited temporary, short-term temporary, and or/special duty positions over the next six months. First consideration will be given to current PROTEC17 members in the same classification that are eligible for lateral transfer.

APPLICATION PROCESS: If you are interested in pursuing this position and supporting King County's vision for unified, equitable, and high-performing government, please follow the application instructions carefully. Provide us with your work history as applicable, ensuring that you provide details that highlight your ability to fulfill the requirements for this position.

If you need this announcement in an alternate language or format, or you would like to request accommodation or assistance in the application or assessment process, please contact Janice Antonio at [email protected]

For interviewing tips, please see the STAR-LA method: star-la_interview_method.pdf

WORK SCHEDULE: The work week is normally Monday through Friday, 8.00 a.m. to 5:00 p.m., but may at times require work outside of normal business hours. This position is Non-Exempt from the provisions of the Fair Labor Standard Act and is eligible for overtime pay, with prior supervisor approval.

EMERGENCY DESIGNATION STATUS: This position has been designated as: Non-Mission Critical - Employees who staff county functions or services that may be delayed, suspended, or diverted in an emergency while essential functions are prioritized Mission Critical. Unless otherwise directed by the County Executive, department director or agency head, all employees, regardless of designation, are expected to report to work or request leave during an emergency or inclement weather.

UNION MEMBERSHIP: PROTEC17

TELEWORKING REQUIREMENT: We will work in the office at least three days a week to foster connection and responsiveness, arrive prepared and on time, and structure meetings with clear goals and next steps. The work associated with this position will be performed by teleworking, field work, onsite work and meetings as needed. The primary onsite location is at King Street Center, 201 S. Jackson, Seattle, WA 98104.Employees must reside in Washington State and within a reasonable distance to their King County worksite to respond to workplace reporting requirements.

01

Do you have a valid Washington Professional Engineer (PE) License or the ability to transfer license to Washington State within 90 days of hire?

• Yes
• No

02

Do you have at least seven years (7) of professional traffic operations experience involving planning, engineering, and operational needs of roadway systems?

• Yes
• No

03

If you answered yes to question number two, please specify where you gained your experience with planning, engineering, and operational needs of roadway systems. If this does not apply to you, please state "N/A".
04

Do you have at least five years (5) of progressively responsible supervisory experience that includes hiring, work assignment oversight, performance evaluations, decision making, and conflict resolution?

• Yes
• No

05

Are you applying to this position as an eligible Priority Placement Program Participant who is a current or previous King County Employee impacted by layoff? ANDIs this position the same or lower percentage of full-time when compared to the position held at the point of the notification of layoff? ANDDo you possess the skills and abilities to qualify for this position?

• Yes, I was given a layoff notice from my Care