Senior Full-Stack .NET Web Developer (Contract)

Hillsborough County•Tampa, FL

1d•Remote

About The Position

We are seeking a highly skilled Senior Full-Stack .NET Web Developer to design, build, maintain, and optimize mission-critical, public-facing web applications. The role spans server-side C#/.NET services and modern JavaScript front ends, combining technical expertise, UI/UX awareness, problem-solving, and leadership. The developer will support a strategic Azure-hosted messaging platform and public services through an independent contractor engagement with a local government entity.

Requirements

At least 10 years of professional software development experience, with a strong emphasis on web application development.
Expertise in C#/.NET Core or Framework, including ASP.NET Core MVC/Razor Pages and RESTful API development.
Strong proficiency in modern JavaScript/TypeScript and hands-on experience with at least one major framework: React, Angular, or Vue.
Solid command of HTML5, CSS3, and responsive, cross-browser design principles.
Experience with SQL Server or comparable relational databases, including strong SQL query and optimization skills.
Experience implementing accessibility standards, including WCAG 2.1 AA or Section 508.
Experience with Azure, including App Service, Azure DevOps or CI/CD pipelines, and cloud deployment for web applications.
Strong understanding of web application security practices, including authentication and authorization, OWASP Top 10, and data protection.
Excellent problem-solving, troubleshooting, debugging, communication, and leadership abilities across front-end, back-end, and database code.

Nice To Haves

Experience with public sector or government web applications.
Ability to use generative AI and AI-assisted development tools to improve code quality, code review, refactoring, unit-test creation, troubleshooting/debugging, and technical documentation while validating generated output for accuracy and security.
Experience with SharePoint, Power Automate, or other Microsoft 365 integration technologies.
Relevant technical certifications in web development, .NET, Azure, or JavaScript frameworks.
Prior experience leading small development teams or mentoring peers.

Responsibilities

Design, develop, and maintain responsive, accessible web applications using ASP.NET Core MVC/Razor Pages and modern JavaScript or TypeScript frameworks such as React, Angular, or Vue.
Build and maintain RESTful or GraphQL APIs and C#/.NET backend services that support front-end applications and integrate with SQL Server and other enterprise systems.
Translate UI/UX designs and wireframes into clean, semantic, cross-browser HTML5, CSS3, and JavaScript/TypeScript.
Architect scalable, secure, and performant front-end and back-end systems, including component libraries, state management, and reusable UI patterns.
Ensure applications meet WCAG 2.1 AA accessibility standards and web security best practices, and perform well across browsers and devices.
Collaborate with product, UX/design, QA, and business stakeholders to deliver end-to-end web solutions.
Support cloud hosting and deployment initiatives using Azure, including App Service, Azure DevOps, and CI/CD pipelines.
Mentor junior developers and contribute to technical best practices, code reviews, and architectural discussions across front-end and back-end development.
Build and optimize CI/CD pipelines for rapid, reliable, automated application deployments.
Monitor, troubleshoot, and optimize production application performance, scalability, and reliability.