Senior Software Engineer

King County, WA; Seattle (WA); Hybrid; USD 130,000 - 180,000; Full time

Benefits offered by this job

Excellent medical, dental, and vision

Retirement plan

Paid holidays and vacation

Flexible work options

Job summary

King County is seeking Senior Software Engineers to design and deliver cloud-native solutions using Microsoft Azure, Power Platform, Dynamics 365, and related technologies. You will support legacy apps and serve as a Tier 3 escalation point for complex issues, while crafting scalable, secure, and user-centered applications.

The role emphasizes collaboration, public service, and continuous learning, with hybrid onsite/telecommuting options and a strong focus on modern development practices.

Qualifications

• Requires a Bachelor’s degree or equivalent combination of education and experience.
• Proficient in Power Platform, Dynamics 365, and Azure services.
• Experience with modern JavaScript frameworks (React/Angular) and .NET stack.

Responsibilities

• Design and develop cloud-native applications on Microsoft Azure and Power Platform.
• Build integrations using APIs and enterprise service layers.
• Develop web apps with React/Angular and maintain CI/CD pipelines with Azure DevOps.
• Support legacy apps and provide Tier 3 escalation for complex issues.
• Create technical and user documentation and provide knowledge transfer.

Skills

Power Platform

Azure

JavaScript

React

Angular

CI/CD

DevOps

Git

Analytical thinking

Communication

Education

Bachelor’s degree in Computer Science or related field

Tools

Microsoft Visual Studio

ASP.NET MVC

ASP.NET Web API

.NET Core

Entity Framework 6+

API Management

Logic Apps

Function Apps

App Service

Service Bus

Job description

Summary

If you're ready to make a difference at an organization that matters — and you're looking for big challenges with real impact — we’d love to talk to you. Join us as we raise the bar on what technology can achieve in the public sector.

The King County Department of Information Technology (KCIT) is seeking Senior Software Engineers to join our Software Engineering team. In this role, you’ll design and deliver modern, cloud-native solutions using Microsoft Azure, Power Platform, Dynamics 365, Sitecore and other technologies. You’ll also support and enhance legacy applications and serve as a Tier 3 escalation point for complex technical issues. We’re looking for engineers who are passionate about building scalable, secure, and user-centered applications. The ideal candidate brings strong technical expertise, a collaborative mindset, and a commitment to public service.

Job Duties

• Design and develop cloud-native applications using Microsoft Power Platform,?Dynamics 365, and Azure services (e.g., Logic Apps, Function Apps, App Service, API Management).
• Build and maintain custom integrations and solutions using APIs, SDKs, and enterprise service layers.
• Develop and support web-based applications using modern JavaScript frameworks such as React and Angular.
• Enhance and modernize legacy applications across a variety of platforms and technologies.
• Develop and maintain CI/CD pipelines, source code, documentation, and work items using Azure DevOps.
• Implement and support Dynamics 365 customizations, workflows, Power Automate flows, and model-driven apps.
• Serve as a Tier 3 escalation point for complex technical issues within your application portfolio.
• Create and maintain technical and user documentation; provide training and knowledge transfer to team members and end users as needed.
• Stay current with emerging technologies and development practices; actively share knowledge and collaborate with peers across teams.

Minimum Qualifications

• Bachelor’s degree in Computer Science, Information Systems, or a related field — or an equivalent combination of education and experience.
• 2+ years of professional experience developing solutions within the Microsoft development stack, including several of the following:
• Microsoft Power Platform (Power Apps, Power Automate, Power BI)
• Dynamics 365 (model-driven apps, workflows, customizations)
• Microsoft Visual Studio,C#,?ASP.NET MVC,?ASP.NET Web API,.NET Core,Entity Framework 6+
• JavaScript,AJAX,HTML,CSS, and modern frameworks such as React or Angular
• Experience with Microsoft Azure services, including:
• App Service, Logic Apps, Functions, API Management, and Service Bus
• Familiarity with relational and non-relational data storage design and implementation.
• Hands‑on experience with Agile methodologies, DevOps practices, and Git-based version control.
• Strong analytical and problem‑solving skills; ability to synthesize complex technical and business information.
• Excellent communication and collaboration skills, with the ability to work independently and as part of a cross‑functional team.

Preferred Qualifications

• Experience working in or with public sector organizations, particularly in a government or civic technology environment.
• Microsoft certifications in Azure, Power Platform, or Dynamics 365.

Supplemental Information

Hybrid Work: The work associated with this position will be performed through a combination of onsite work and telecommuting. Employees will have access to shared workspaces at various King County facilities. 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 when working remotely.

Classification: IT Engineer-Senior - 7120700

Union: This position is represented by PROTEC17- Information Technology

Work Schedule: The normal work week for this position is Monday through Friday, 8:00 a.m. to 5:00 p.m. Alternative work schedules may be considered. This position is FLSA Exempt and is not eligible for overtime pay.

King County's Vision, Mission, and ACTIVATE Values unite us.

King County serves residents with a relentless sense of urgency, delivering on commitments with transparency and accountability. We are action‑oriented, creative problem solvers who collaborate across roles, engage directly with communities, and challenge the status quo to achieve meaningful impact. As a unified team, we uphold high ethical and stewardship standards, embrace change, stay curious, and continuously improve. Across all interactions, we listen first, act quickly, and stay aligned as a team to earn and sustain public trust. Learn more about our Vision, Mission, and ACTIVATE Values here and visit our Why work at King County page here.

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.

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.

Benefits

• 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 on the terms and details of the position. Short Term Temporary positions are not eligible for an ORCA transit pass.