Title: Senior Dotnet Developer

Location: Hamilton Township, New Jersey, United States

Type: W2 Only

Position Summary:

We are seeking an experienced Senior Full Stack .NET Developer to join a large-scale modernization project. The role involves refactoring legacy COBOL applications into modern .NET architecture, building responsive web interfaces, implementing critical integrations, and supporting mission-critical systems. This is an onsite, full-time role requiring a local candidate in the Hamilton, NJ area.

Required Technical Skills:

Backend (.NET Stack):

• 7+ years of C# programming experience
• 5+ years of .NET Core / .NET 6/7/8 development
• 5+ years of ASP.NET Core Web API
• 5+ years Entity Framework Core
• Strong LINQ and async/await proficiency
• Experience with Dependency Injection and IoC containers
• Knowledge of design patterns (Repository, Factory, Strategy, SOLID principles)

Frontend Development:

• 3+ years Angular 14+ OR React 18+ experience
• 3+ years TypeScript experience
• Proficient in HTML5, CSS3, SASS/LESS
• Responsive design and mobile-first approach
• State management (NgRx, Redux, or similar)
• RESTful API integration
• Understanding of WCAG 2.1 accessibility standards

Database:

• 5+ years of SQL Server 2019+ experience
• Strong T-SQL/PL-SQL skills (stored procedures, triggers, functions)
• Database design, normalization, query optimization, and performance tuning
• Entity Framework Core migrations
• Experience with database versioning and deployment

Cloud Platform:

• 2+ years AWS experience (EC2, Lambda, RDS, SQS, S3)
• Cloud-native application design, serverless architecture patterns
• Knowledge of cloud security best practices

DevOps & Testing:

• Git version control (branching, merging, pull requests)
• CI/CD pipeline experience (AWS CodePipeline or GitHub Actions)
• Docker containerization
• Unit testing frameworks (xUnit, NUnit, MSTest)
• Automated testing strategies

Professional Experience (Must Have):

• 10+ years professional software development experience
• 7+ years .NET/C# development
• 3+ years full stack development (frontend + backend)
• 2+ years cloud platform experience (AWS or Azure)
• Experience with large-scale enterprise applications (1M+ LOC)
• Experience with mission-critical systems (99.9%+ uptime)
• Participated or led application modernization projects
• Familiarity with Agile/Scrum methodologies
• Exposure to full SDLC (Requirements → Production)

Education:

• Bachelor’s degree in Computer Science, Software Engineering, or related field
• OR equivalent work experience (10+ years professional development)

Highly Desired Qualifications:

• Legacy System Experience: COBOL, Mainframe (IBM, Bull, Unisys), EASYTRIEVE
• Legacy system modernization project experience
• JCL or job scheduling systems knowledge
• IDS-II, IDMS, or network database experience