Job Description

A career with Johnson County Government is more than just a job, it is an opportunity to serve a diverse and expanding community in meaningful ways. We challenge ourselves to be a different kind of government because we care deeply about our community and each other. Committed to our shared values, we provide excellent public service, seeking always to improve ourselves and our organization. We offer wonderful benefits, retirement plans, wellness incentives, a great organizational culture, and much more! If you’re searching for something more than just a job, something akin to a calling, then consider the challenge and opportunity of being a member of Johnson County Government!

Johnson County Government is seeking an experienced Developer III to join our JIMS development team. This senior-level role is responsible for designing, developing, and supporting complex applications and integrations that serve our Justice partners. Developer III functions as a technical leader—driving solution architecture, modernizing legacy systems, mentoring team members, and ensuring high‑quality delivery across multiple platforms and technologies. This position requires deep experience in Microsoft-based technologies, browser-based application development, multi-system integration, and both legacy and modern development practices.

This position is currently eligible to work in a hybrid work environment with both onsite and remote work. Residency within the Kansas City-Overland Park-Kansas City, MO-KS Combined Statistical Area, which generally includes the Kansas counties of Johnson, Wyandotte, Leavenworth, Miami, and Linn, and the Missouri counties of Jackson, Clay, Platte, Cass, and Ray, is required.

The first review of applications will be Monday, July 13th. Applications received after that date will be periodically reviewed.

Responsibilities Include:

• Architect, design, develop, and maintain complex applications on the Microsoft .NET platform
• Serve as a technical lead for system enhancements, modernization initiatives, and project planning
• Provide advanced support for UniVerse (Rocket) and MS SQL databases, including performance optimization
• Lead development of browser-based applications and modern web interfaces
• Oversee and participate in maintenance, refactoring, and replacement strategy for legacy Visual Basic and C# codebases
• Design, implement, and govern APIs and system integrations across internal and external platforms
• Troubleshoot and resolve complex application issues; provide root cause analysis and long‑term solutions
• Collaborate closely with analysts, stakeholders, and cross-functional teams to define and deliver technical solutions
• Establish and enforce best practices for coding standards, testing, version control and documentation
• Mentor and coach Developer I and II team members
• Contribute to system roadmap development and technology modernization strategies

Job Requirements

Required Qualifications

• 7+ years of professional software development experience
• Advanced experience with Microsoft .NET technologies (C#, ASP.NET, .NET Core)
• Strong understanding of relational databases such as MS SQL, including stored procedures and performance tuning
• Deep experience developing and consuming APIs (REST, SOAP, JSON, XML)
• Strong background in system integration and middleware concepts
• Proficiency with web application development (HTML, CSS, JavaScript, modern frameworks preferred)
• Experience maintaining, refactoring, or migrating legacy Visual Basic and C# applications
• Demonstrated ability to diagnose and resolve complex application and integration issues
• Experience delivering solutions in a structured SDLC environment
• Ability to lead technical discussions, influence design decisions, and guide development teams

Soft Skills Required

• Strong leadership and mentorship capabilities
• Excellent interpersonal skills and ability to collaborate across technical and non-technical teams
• Curiosity, initiative, and ownership of technical challenges and long-term solutions
• Effective written communication skills for documentation, proposals, and technical specifications
• Strong verbal communication and facilitation skills, including presenting to stakeholders
• Ability to drive consensus, gather requirements, and lead technical decision-making processes

Preferred Qualifications

• Experience working with UniVerse (Rocket) at an advanced level
• Understanding of Unix AIX environments
• Bachelor’s degree in Computer Science, Information Technology, or related field
• Experience with COTS systems and large-scale application ecosystems
• Working knowledge of IIS administration and web application hosting
• Experience with DevOps practices (CI/CD, automated testing, pipelines)
• Familiarity with cloud platforms such as Azure or AWS

Skills & Competencies

• Advanced problem-solving and debugging skills
• Ability to balance independent work with team collaboration and leadership
• Strong architectural thinking and ability to evaluate technology choices
• Excellent documentation and communication skills
• Comfortable working across a wide spectrum of technologies, including legacy platforms and modern frameworks
• Ability to manage multiple projects, deadlines, and changing priorities

Johnson County Government requires reference/background screening for all positions. Specified criteria may vary by Department/Agency.