Senior .NET Technical Lead

We are seeking a Senior .NET Technical Lead for a contract position based in Tempe, Arizona. In this role, you will lead a small development team while designing, building, and maintaining software applications that support business operations and customer-facing products. You will translate functional and technical requirements into reliable, scalable, and secure solutions, working collaboratively across technical design, development, testing, and deployment.

Responsibilities

• Oversee one development team (2-4 developers) under the guidance of an Architect
• Design, develop, and maintain software applications, services, and APIs
• Write clean, maintainable, and well-tested code in accordance with coding standards
• Implement new features and enhance existing functionality
• Participate in technical design and architecture discussions
• Ensure solutions are scalable, performant, and maintainable
• Follow established design patterns and development best practices
• Create unit, integration, and automated tests
• Debug and resolve defects found across environments
• Support CI/CD pipelines and deployment activities
• Monitor application performance and resolve production issues
• Document technical solutions and operational procedures
• Contribute to technical specifications and technical design documentation for the software development team
• Analyze software source code to validate applications against business and technical requirements

Qualifications

• Required

• Minimum 8+ years of professional experience working with C#, .NET Core, and Angular (latest versions)

• Experience deploying software solutions using the Microsoft .NET framework

• Backend expertise: .NET, C#, ASP.NET Web API, SQL Server

• Frontend expertise: Angular, TypeScript/JavaScript, HTML, CSS

• Solid understanding of RESTful API design and integration

• Experience with SQL Server or other relational databases

• Familiarity with Entity Framework, LINQ, and dependency injection

• Knowledge of HTML5, CSS3, TypeScript, and responsive design principles

• Proven experience with Microsoft Azure DevOps or Atlassian Jira

• Good understanding of Agile methodology, including Scrum methods and processes

• Ability to work collaboratively with a team addressing technical issues and problems

• Ability to work independently and apply critical thinking skills as required

• Daily hands-on use of AI coding assistants (GitHub Copilot, Claude Code, Cursor, or equivalent) on production code-not pilots or side projects

• Demonstrated judgment on where AI-assisted development works and where it does not, particularly with large legacy .NET codebases

• Experience defining or enforcing team standards for reviewing and merging AI-generated code

• Preferred

• Measurably improved team throughput or quality using AI tooling, with tracked metrics to demonstrate impact

• Experience coaching 2-4 developers on AI-assisted workflows and presenting results to peer leads