Senior ASP.NET / C# Developer - Sparks, MD

Senior ASP.NET / C# Developer

Location: Sparks, MD / Annapolis Junction, MD
Employment Type: Full-time
Work Arrangement: Hybrid

Hillis-Carnes Engineering Associates is seeking an experienced Senior ASP.NET / C# Developer to develop, enhance, and support business applications using Microsoft technologies.

Responsibilities

- Develop and maintain web applications using ASP.NET, C#, and SQL Server.

- Support and modernize existing ASP.NET Web Forms and MVC applications.

- Develop application features, APIs, integrations, reports, and internal tools.

- Write and optimize SQL queries, stored procedures, and data-access code.

- Troubleshoot application, database, and production issues.

- Collaborate with business users and technical teams to define and implement solutions.

- Participate in code reviews, testing, deployment, and technical documentation.

- Follow secure coding and software-development best practices.

Required Qualifications

- Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent professional experience.

- Seven or more years of professional experience developing applications with C#, ASP.NET, and SQL Server.

- Experience with ASP.NET Web Forms, MVC, NET Core, and Core API.

- Experience with RESTful APIs.

- Experience with WPF is a plus.

- Strong SQL Server and database-development skills.

- Proficiency with HTML, CSS, JavaScript, and jQuery.

- Experience with Git or another source-control system.

- Experience using AI-assisted development tools, such as GitHub Copilot, Claude Code, ChatGPT for coding, debugging, testing, and documentation, with the ability to review AI-generated output for accuracy, security, and maintainability.

- Strong troubleshooting, communication, and problem-solving skills.

- Ability to work independently and as part of a team.

Preferred Qualifications

- Experience with DevOps, including IIS, SSL, Windows Server, and application deployment.

- Experience with Telerik, Syncfusion, Microsoft Graph, or third-party system integrations.

- Experience modernizing legacy business applications.

Hillis-Carnes offers a comprehensive benefits package including Employee Stock Ownership Plan (ESOP), medical (with Health Savings Account Options), Dental, Vision, company-paid life and long-term disability, wellness incentives, generous PTO and paid holidays, 401k with company match, and much more!

HCEA is an Equal Opportunity/Affirmative Action employer. Minorities and Women are encouraged to apply.