Senior NET Developer

JCD Staffing; Alexandria (VA); On-site; USD 100,000 - 130,000; Full time

Job summary

JCD Staffing is seeking a Senior .NET Developer for a contract-to-hire opportunity in Alexandria, VA. The role involves hands-on development and modernization of enterprise web applications using .NET technologies, Angular, and SQL Server.

The ideal candidate will have over 10 years of development experience, strong communication skills, and the ability to support both legacy and modern application environments while developing secure applications.

Qualifications

• 10+ years of related software development experience.
• Advanced hands-on experience with .NET Framework and .NET Core.
• Strong experience with Angular and JavaScript UI frameworks.

Responsibilities

• Develop, maintain, and modernize web applications using .NET technologies.
• Support legacy systems while contributing to infrastructure modernization.
• Design, build, and maintain APIs according to best practices.

Skills

Full-stack development

Secure coding practices

API development

SQL Server

Angular

JavaScript

Education

Bachelor’s degree in Computer Science or related field

Job description

Senior .NET Developer

Location: Alexandria, VA. Work Schedule: Onsite 5 days per week. Employment Type: Contract-to-Hire. Clearance: Must be able to obtain a Public Trust. Citizenship: U.S. Citizenship required.

We are seeking a Senior .NET Developer for a contract-to-hire opportunity supporting legacy application sustainment and modernization efforts in Alexandria, VA. This is a hands‑on development role focused on building and maintaining enterprise web applications using .NET Framework, .NET Core, Angular, SQL Server, and API development.

The ideal candidate will have strong full‑stack development experience, the ability to support both legacy and modern application environments, and the communication skills needed to work closely with technical leads, developers, testers, and end users.

Key Responsibilities

• Develop, maintain, and modernize web applications using .NET Framework, .NET Core, Angular, JavaScript, and SQL Server
• Support legacy systems while contributing to infrastructure and application modernization efforts
• Design, build, and maintain APIs following secure coding and architecture best practices
• Write and maintain SQL queries, stored procedures, and backend database components
• Participate in the full software development life cycle, including design, coding, unit testing, integration testing, and troubleshooting
• Use DevSecOps toolchains for code builds, merges, deployments, and testing
• Maintain design documentation and contribute to design and test artifact reviews
• Collaborate with Scrum Masters, Technical Leads, developers, testers, and business users to translate requirements into Features and User Stories
• Identify root causes of application issues and work with testers and end users to resolve defects
• Lead by example in writing secure, maintainable, and testable code

Required Qualifications

• U.S. Citizen
• Able to obtain a Public Trust clearance
• Able to work onsite in Alexandria, VA, 5 days per week
• Bachelor’s degree in Computer Science or a related technical field
• 10+ years of related software development experience
• Advanced hands‑on experience with .NET development, including both .NET Framework and .NET Core
• Strong experience with Angular and JavaScript UI frameworks
• Experience developing and managing APIs
• Strong SQL experience, including queries and stored procedures
• Experience supporting enterprise applications and modern application architecture
• Experience writing and maintaining unit tests
• Experience maintaining design documentation
• Strong communication skills and ability to work well in a team environment