.NET Developer with Security Clearance

Job Description NDi is seeking an experienced .NET Developer to support the development, sustainment, and modernization of enterprise web applications. This is a hands-on development position supporting both operations and maintenance (O&M) of existing applications and modernization initiatives involving .NET Core, .NET Framework, SQL, Angular, and API-based architectures. The .NET Developer will participate throughout the software development life cycle, including application design, development, testing, integration, deployment, troubleshooting, and ongoing support. The successful candidate will work closely with developers, technical leads, testers, Scrum team members, and end users to deliver secure, maintainable, and reliable software solutions.

Requirements: U.S. Citizenship is required
Must be able to obtain a Public Trust clearance
This position requires working onsite in Alexandria, VA, 5 days per week Qualifications and Experience: Bachelor of Science in Computer Science, Information Technology, Engineering, or a related technical field. An additional 4 years of relevant professional experience may be substituted for the bachelor's degree requirement, for a total of 12 years of relevant experience without a degree.
8 years of relevant professional experience.
Strong analytical, problem-solving, and troubleshooting skills.
Self-motivated with the ability to work effectively both independently and as part of a collaborative development team.
Excellent written and verbal communication skills.

Technical Qualifications: Strong experience with .NET software development, including both .NET Framework and .NET Core. Experience developing, enhancing, and supporting enterprise web applications. Experience with modern application architectures and software development practices. Experience designing, developing, integrating, and maintaining APIs. Experience with JavaScript-based user interface frameworks, including Angular. Experience writing and maintaining SQL queries and stored procedures. Experience developing and maintaining unit tests.

Experience creating and maintaining application and technical design documentation. Experience working with established DevSecOps processes and toolchains for software build, integration, deployment, and testing. Understanding of secure coding and software development best practices.

Key Responsibilities: Perform hands-on application development throughout the software development life cycle, including design, coding, unit testing, integration testing, deployment, maintenance, and troubleshooting. Develop, enhance, and maintain enterprise web applications using .NET, SQL, and Angular technologies. Develop and maintain SQL queries and stored procedures supporting large, shared databases. Design, develop, integrate, and maintain APIs in accordance with established architectural and security practices. Design, develop, and maintain web application components using Angular.

Use established DevSecOps toolchains to build, merge, deploy, and test software components. Develop and maintain unit tests to support application quality, reliability, and maintainability. Produce and maintain application design documentation and other required technical artifacts. Participate in design and code reviews and apply secure, maintainable, and testable software development practices. Collaborate with Scrum Masters, technical leads, developers, and other cross-functional team members to translate business requirements into features and user stories.

Work closely with testers and end users to investigate application issues, identify root causes, and implement effective resolutions. Support the sustainment and modernization of existing applications while helping transition systems toward modern application architectures and technologies.