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Senior Software Engineer - .Net Full Stack Developer

MphasisNew York, NYL6 LeadOctober 28th, 2026
Job Description: .NET Full Stack Developer
Location: Wilmington, DE (Onsite 5 days/week)
Position TitleNET Full Stack Developer
Job Summary: We are seeking a highly skilled .NET Full Stack Developer with hands-on experience in designing, developing, and maintaining scalable enterprise applications. The ideal candidate should possess strong expertise in .NET technologies, ASP.NET Core, C#, Web APIs, SQL Server, and modern front-end frameworks such as Angular, React, or Vue.js. The candidate will collaborate with cross-functional teams to deliver high-quality software solutions aligned with business objectives.
Key Responsibilities: Design, develop, test, and deploy web-based applications using .NET Core/.NET 8, C#, ASP.NET Core, and Web APIs. Develop responsive and user-friendly front-end applications using Angular, React, JavaScript, TypeScript, HTML5, and CSS3.Build and consume RESTful APIs and integrate third-party services. Write clean, scalable, secure, and maintainable code following coding standards and best practices. Develop database objects, optimize SQL queries, and maintain database performance. Collaborate with Business Analysts, Architects, Product Owners, and QA teams throughout the SDLC.Perform code reviews, troubleshoot production issues, and implement fixes. Participate in Agile ceremonies including sprint planning, daily stand-ups, retrospectives, and demos. Implement CI/CD pipelines and support DevOps initiatives. Ensure application security, performance, scalability, and reliability.
Required Skills:
  • BackendC#, .NET Framework, .NET Core/.NET 6/7/8ASP.NET MVC, ASP.NET CoreREST API Development
  • Entity Framework Core
  • Dependency InjectionLINQ and ORM concepts
  • FrontendAngular (preferred) or ReactJavaScript, TypeScriptHTML5, CSS3, Bootstrap
  • Responsive Web Design
  • DatabaseSQL ServerStored Procedures, Functions, ViewsQuery Optimization and Performance TuningDevOps & ToolsAzure DevOps / GitHubGit Version ControlCI/CD Pipelines
  • Docker (preferred)
  • SonarQube and Code Quality ToolsCloud (Preferred)
  • Microsoft AzureAzure App Services
  • Azure Functions
  • Azure Storage
Azure Service BusQualificationsBachelor's degree in Computer Science, Information Technology, or related field.8-10 years of experience in full-stack application development. Strong understanding of Object-Oriented Programming (OOP), Design Patterns, and SOLID principles. Experience working in Agile/Scrum environments. Excellent problem-solving and communication skills.
Preferred Skills:
  • Microservices Architecture
  • KubernetesMessaging systems (Kafka, RabbitMQ, Azure Service Bus)
  • Authentication and Authorization (OAuth 2.0, JWT, OpenID Connect)
  • Experience in BFSI, FinTech, or Enterprise Digital Transformation projects
Key Competencies:
  • Ownership and accountability
  • Team collaboration
  • Client-focused mindset
  • Analytical and troubleshooting skills
  • Continuous learning and innovation