Sr Dotnet Developer

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