Senior .NET Applications Developer

maricopa; Phoenix (AZ); Hybrid; USD 87,000 - 157,000; Full time

Benefits offered by this job

Tuition reimbursement

Hybrid work options

Growth opportunities

Healthcare for you and dependents

Paid vacation and sick time

Wellness program

Arizona State Retirement System with 1

Job summary

Maricopa County's Enterprise Technology & Innovation is seeking a Senior .NET Applications Developer to design, develop, and maintain scalable, secure enterprise apps using ASP.NET, C#, RESTful APIs, and related Microsoft technologies. The role emphasizes architecture, security, and lifecycle management to deliver maintainable solutions.

The position offers hybrid work options, tuition reimbursement, competitive pay ($87,000–$156,500 annually), and a strong focus on growth, work-life balance,

Qualifications

• Five years of progressively responsible experience in application development and related IT functions.
• Bachelor's degree in Computer Science, IT, Software Engineering, or related field.
• Equivalent combination of education and experience accepted on a year-for-year basis.

Skills

NET

.NET

C#

RESTful APIs

SQL Server

JavaScript/jQuery

HTML5

CSS

Azure DevOps

Software architecture

Education

Bachelor's degree in Computer Science, Information Technology, Software Engineering, or related

Tools

Visual Studio

Azure DevOps (ADO)

SQL Server

IIS

Job description

Posting Date 10/20/26

Application Deadline 10/27/26

Pay Range $87,000 - $156,500 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

About the Position

Enterprise Technology and Innovation is seeking a highly skilled Senior .NET Applications Developer who is passionate about building scalable, secure, and innovative enterprise applications using modern Microsoft technologies. This role will focus on designing, developing, and maintaining 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.

About Us

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 ourselves on leveraging technology to create digital transformations. We look for ways to bring about innovative solutions while providing top-notch customer service.

Proud To Offer

• Work with a greater purpose
• Tuition reimbursement
• Exceptional work-life balance, with hybrid and alternative work schedules options available
• 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 the 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 an 11.98% per paycheck contribution rate that includes a 100% employer match on Day 1

Want to learn more about the County's Qualifying and Compensation Philosophy?

We Require

• Five (5) 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 leading or supporting Agile transformations, including adoption of Scrum, Kanban, or o