.NET Application Developer

Request ID: 110065-1
Title: .NET Application Developer
Location: North Quincy, MA
Duration: 6 Months
Pay Range: $43 - $45/Hour on W2/C2C (All inclusive)

We are seeking an experienced .NET Application Developer to support the development, maintenance, and enhancement of a critical Currency Management application built on.NET Framework 4.8, .NET 8, React.js, and Oracle 19c. The ideal candidate will have strong expertise in C#, .NET technologies, React.js, Oracle, SQL Server, REST APIs, and enterprise application development.

This role involves developing scalable business solutions across UI, service, business, and data layers while ensuring high-quality code, production stability, and successful release delivery. The candidate will work closely with cross-functional teams, participate in code reviews, troubleshoot complex issues, and contribute to modernization initiatives.

Key Responsibilities

• Design, develop, enhance, and maintain enterprise applications using C#, .NET Framework 4.8, and .NET 8.
• Implement features across business logic, service, integration, and data access layers.
• Develop and consume RESTful APIs and backend services.
• Build and support user interface components using React.js, JavaScript, HTML, and CSS.
• Troubleshoot and resolve complex application defects and production issues.
• Refactor legacy code while maintaining system functionality and stability.
• Debug and optimize database interactions involving Oracle 19c and SQL Server.
• Develop and execute unit and integration tests to ensure application quality.
• Participate in code reviews, enforce coding standards, and follow best practices.
• Support production releases and coordinate deployment activities with QA and support teams.
• Investigate incidents, perform root cause analysis, and deliver production patches.
• Collaborate with business analysts, architects, developers, and QA teams throughout the SDLC.
• Maintain technical documentation and contribute to continuous improvement initiatives.

Required Skills & Qualifications

Technical Skills

• 4+ years of experience in C# and .NET development.
• Strong hands-on experience with .NET Framework 4.x and .NET 8.
• Experience developing and consuming REST APIs.
• Strong understanding of Object-Oriented Programming (OOP) concepts.
• Knowledge of Design Patterns, SOLID principles, and Clean Architecture.
• Hands-on experience with React.js, JavaScript, HTML5, and CSS3.
• Strong database experience with Oracle and SQL Server.
• Ability to debug and troubleshoot complex data-layer and application-layer issues.
• Experience using Visual Studio for development and debugging.
• Proficiency in Git, including branching strategies, pull requests, code merges, and conflict resolution.
• Experience in unit testing frameworks and test-driven development practices.