Dotnet Developers - Frontend & UI/UX

W2 Contract : Senior .NET Developer – Front-End / UI/UX Focus

Location: Remote (Iowa-based candidates preferred)

Work Arrangement: Fully Remote

Engagement Type: Contract

Job Overview

We are looking for experienced Senior .NET Developers with strong front-end development, UI/UX, and accessibility expertise to develop, enhance, and support enterprise applications. The ideal candidates will have hands-on experience with .NET, C#, modern front-end technologies, enterprise design systems, and WCAG 2.1 AA accessibility standards.

This role requires a balanced combination of backend development and front-end implementation, with a strong emphasis on accessible, responsive, user-friendly interfaces. Candidates must be comfortable working independently, supporting existing enterprise applications, and following modern development best practices.

Important: Candidates must provide code samples or a portfolio demonstrating front-end development and UI work along with their resume.

Key Responsibilities

• Develop, enhance, and maintain enterprise applications using .NET and C#, including MVC and Web Forms.
• Build responsive front-end interfaces using HTML5, CSS, Sass, and JavaScript.
• Apply UI/UX principles, design thinking, usability standards, and responsive design practices.
• Implement and extend components using Bootstrap, Material, and enterprise design systems.
• Develop accessible applications that comply with WCAG 2.1 AA and Section 508 standards.
• Perform accessibility testing and remediation using tools such as JAWS and axe.
• Develop and maintain backend services, REST APIs, middleware integrations, and SQL Server components.
• Follow secure coding practices, including appropriate encryption techniques and sensitive data handling.
• Manage source control, deployments, and CI/CD pipelines using Azure DevOps.
• Troubleshoot and resolve application defects and production issues.
• Support modernization and enhancement of existing enterprise applications.
• Collaborate with designers, developers, and other stakeholders to deliver reliable and accessible solutions.

Required Qualifications

• Bachelor’s degree in Human-Computer Interaction (HCI), Design, Computer Science, or a related field, or equivalent professional experience.
• Strong hands-on experience with .NET and C# development.
• Strong front-end development experience using HTML5, CSS, Sass, and JavaScript.
• Demonstrated knowledge of UI/UX principles, usability, responsive design, and design implementation.
• Experience working with enterprise design systems, beyond familiarity with individual UI frameworks or component libraries.
• Formal WCAG accessibility training and hands-on experience implementing and testing WCAG 2.1 AA standards.
• Experience using accessibility testing tools, including assistive technologies such as JAWS and automated tools such as axe.
• Recent experience with modern development frameworks and practices within the last three years.
• Experience with Azure DevOps and CI/CD pipelines.
• Working knowledge of SQL Server, APIs, and middleware integrations.
• Experience supporting enterprise production applications and handling sensitive or classified data.
• Ability to provide code samples or a portfolio demonstrating front-end and UI development work.

Preferred Qualifications

• Accessibility certifications such as DHS Trusted Tester, IAAP WAS, or CPACC, or equivalent formal training.
• Graduate degree in HCI or a related discipline.
• Experience supporting government or healthcare applications.
• Experience with Angular, GitHub, and AWS services.
• Experience modernizing existing applications and working with legacy systems.
• Experience with secure enterprise application development and deployment.

Interview Requirements

Candidates should be prepared to demonstrate hands-on technical knowledge and discuss practical examples involving .NET, C#, Web Forms, HTML5, Sass, enterprise design systems, and accessibility implementation.