What are the responsibilities and job description for the Senior Full Stack .Net Developer (US Citizenship, ONSITE) position at System One?
Senior Full Stack .Net Applications Developer
Washington, DC – 100% Onsite
Per Federal contract U.S. citizenship is required
Must be able to obtain Public Trust clearance
W2 or C2C
Application Deadline: 9/14
Seeking an experienced Full Stack Sr Application Developer to join our development team. They will build and maintain powerful web applications using our modern tech stack: .NET Core C#, Web API, Angular 16 , Entity Framework, and SQL Server. In this role, they will contribute across the entire application lifecycle - from database design to front-end implementation. They will work collaboratively with other developers, QA engineers, and business analysts in our fast-paced Agile environment to deliver software solutions.
Technical Skills:
- Design and develop components across the full technology stack
- Create and maintain database schemas, stored procedures, and efficient SQL queries
- Implement secure, scalable RESTful APIs and service integrations
- Build responsive, intuitive user interfaces using Angular
- Write clean, well-tested, maintainable code
- Troubleshoot complex technical issues across the stack
- Participate in code reviews, testing, and deployment activities
- Collaborate with cross-functional teams to meet project requirements
- Follow CI/CD processes using Git, GitLab and related tools
Required Skills & Experience:
- 7 years of experience with .NET C# development, including web applications
- Strong proficiency with our core stack:
- .NET 8 framework and ASP.NET Core Web API
- Entity Framework Core
- SQL Server
- Angular 16 and later
- Experience with Git-based version control systems
- Strong problem-solving and analytical skills
- Self-motivated with ability to manage multiple projects
- Quick learner adaptable to new technologies
- Experience working in Agile development teams
Preferred Qualifications:
- Microservices architecture experience
- Containerization knowledge (Docker, Kubernetes)
- Cloud platform implementation experience
- Unit testing frameworks expertise
System One is a leading provider of specialized, highly technical services and solutions to critical infrastructure, technology, life sciences, and government sectors. We partner with large private and public organizations who trust us to execute their complex, mission-critical initiatives through our outsourced services and workforce solutions.