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

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

#M1

#LI-VH1

Ref: #851-Rockville-S1

System One, and its subsidiaries including Joulé, ALTA IT Services, TeamPeople, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.