Senior .NET Applications Developer

About the role

Technology is ever-changing and constantly growing, and we are seeking someone who wants to grow with us. If you are someone passionate about building scalable, secure, and innovative enterprise applications using modern Microsoft technologies, consider joining our team! We are s eeking a highly skilled Senior .NET Applications Developer to design, develop, and maintain robust solutions leveraging the .NET ecosystem, including ASP.NET, C#, RESTful APIs, and related technologies. The ideal candidate will not only have hands-on experience developing complex business applications and integrations but will also bring a strong understanding of software architecture, development best practices, security, and application lifecycle management to ensure solutions are maintainable, performant, and aligned with organizational standards. If you thrive on solving challenging technical problems, mentoring others, and driving digital transformation through modern application development, this is your opportunity to make a measurable impact. Are you looking for a career in a dynamic organization that embraces a can-do spirit? Look no further than Maricopa County's Enterprise Technology & Innovation ! We are a team that prides itself on leveraging technology to create digital transformations. We look for ways to bring about innovative solutions while providing top-notch customer service. Apply today and become part of the team that makes a lasting impact on the future of technology at Maricopa County. Proud to Offer Work with a greater purpose Tuition reimbursement Exceptional work-life balance, with hybrid and alternative work schedule options Opportunities for growth and development within Maricopa County Low-cost, high-value healthcare for you and your qualifying dependents Child care benefits, including access to our on-site center, Maricopa County Kids Club , dedicated to serving Maricopa County families Paid vacation, sick time, and parental leave Extensive wellness program, including an incentive Enrollment in the Arizona State Retirement System, a defined retirement benefit requiring a 12% contribution rate per paycheck that includes a 100% employer match on Day 1 Want to learn more about the County's Qualifying and Compensation Philosophy? Follow this link to learn more! Work With Us | Maricopa County, AZ We Require Five years of progressively responsible experience in application development, programming, systems analysis, software implementation, systems integration, or related information technology functions, including the design, development, maintenance, modernization, and support of enterprise applications utilizing Microsoft .NET, C#, Visual Studio, SQL Server, HTML5, CSS, JavaScript/jQuery, Azure DevOps (ADO), RESTful APIs, and Internet Information Services (IIS) Bachelor's degree in Computer Science, Information Technology, Software Engineering, or a closely related field An equivalent combination of post-secondary education and/or job-related experience may substitute for the required experience on a year-for-year basis We Also Value Experience acting as a technical project lead Strong customer service and communication skills with the ability to effectively collaborate with both technical and non-technical stakeholders Knowledge of Software Development Life Cycle (SDLC) principles and best practices Ability to lead technical design efforts and provide guidance on application architecture, scalability, security, and maintainability Demonstrated ability to collaborate effectively within a team of experienced developers, fostering a culture of knowledge sharing, continuous learning, mentorship, and mutual respect Understanding of ALM practices and CI/CD pipelines within Azure DevOps (ADO) Experience documenting and analyzing legacy applications, business processes, and technical architectures to support modernization initiatives Familiarity with responsive web design and adhering to WCAG guidelines for web accessibility Experience migrating applications from on-premises environments to Azure cloud services and modernizing legacy .NET Framework applications to current .NET versions (.NET 8+) Familiarity with AI-assisted development tools such as GitHub Copilot, Claude Code, Cursor, or similar technologies to improve developer productivity and code quality Experience implementing and integrating Single Sign-On (SSO) and identity management solutions, including Okta, Microsoft Entra ID (Azure AD), SAML, and OAuth Familiarity with DevSecOps principles and application security tools such as Checkmarx or similar platforms Experience leadin

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Additional Information

Posting Date 06/22/26 Application Deadline 07/01/26 Pay Range $84,500 - $148,500 annually Salary offers are based on the candidate's equivalent experience and internal equity with other employees within the same job classification. This position is not eligible for overtime compensation. Job Type Unclassified Department Enterprise Technology

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