Senior .NET Developer

Raas Infotek; California City (CA); On-site; USD 120,000 - 170,000; Full time

Job summary

Raas Infotek is seeking a Senior .NET Developer with 12+ years of experience to design, develop, and maintain enterprise-grade applications using Microsoft .NET technologies. The role emphasizes strong C#, ASP.NET Core, Web API, SQL Server, and cloud platforms, with a focus on scalable, secure software architecture.

The candidate will lead technical initiatives, collaborate across teams, and drive best practices in coding, testing, and deployment.

Qualifications

• 12+ years of experience in .NET application development.
• Strong understanding of OOP, SOLID principles and design patterns.
• Experience with Azure or AWS cloud services.
• Proficiency in JavaScript/HTML/CSS/Bootstrap; frontend with Angular or React.

Responsibilities

• Provide technical leadership and mentor junior developers.
• Collaborate with architects, analysts, QA, and other developers.
• Ensure security, scalability, reliability, and maintainability of applications.
• Perform code reviews, debugging, and performance tuning.
• Implement CI/CD pipelines using Azure DevOps, Jenkins, or GitHub Actions.
• Develop RESTful APIs and microservices using ASP.NET Core and Web API.

Job description

Job Summary

We are looking for an experienced Senior .NET Developer with 12+ years of expertise in designing, developing, and maintaining enterprise-level applications using Microsoft .NET technologies. The ideal candidate should have strong hands-on experience in C#, ASP.NET Core, .NET Core, Web API, SQL Server, cloud technologies, and modern application architecture.

Job Description

Senior .NET Developer

Experience: 12+ Years

Job Type: W2 Contract only

Role: Senior .NET Developer

Key Responsibilities

• Provide technical leadership, mentor junior developers, and participate in architectural decisions.
• Collaborate with architects, business analysts, QA teams, and other developers.
• Ensure application security, scalability, reliability, and maintainability.
• Perform code reviews, debugging, performance tuning, and application troubleshooting.
• Implement CI/CD pipelines using Azure DevOps, Jenkins, or GitHub Actions.
• Work with cloud platforms such as Microsoft Azure or AWS.
• Implement authentication and authorization using OAuth 2.0, JWT, and Azure AD.
• Develop and integrate applications with third-party APIs and external systems.
• Implement object-oriented programming (OOP), SOLID principles, and design patterns.
• Design and optimize SQL Server databases, stored procedures, triggers, and queries.
• Build responsive web applications using Angular, React.js, JavaScript, HTML5, CSS3, and Bootstrap.
• Develop RESTful APIs and microservices using ASP.NET Core and Web API.
• Design, develop, test, and maintain scalable enterprise-level applications using C# and .NET Core.

Required Technical Skills

• Strong understanding of OOP, SOLID principles, and design patterns.
• Knowledge of Git, Azure DevOps, CI/CD, and Agile methodologies.
• Experience with Azure or AWS cloud services.
• Strong knowledge of JavaScript, HTML5, CSS3, and Bootstrap.
• Frontend experience with Angular or React.js.
• Experience with Entity Framework / Entity Framework Core and LINQ.
• Proficiency in SQL Server, T-SQL, stored procedures, and database optimization.
• Strong experience with RESTful APIs and Microservices architecture.
• Hands-on experience with ASP.NET MVC and Web API.
• Strong expertise in C#, .NET Framework, .NET Core, and ASP.NET Core.
• 12+ years of experience in .NET application development.

Preferred Skills

• Familiarity with distributed systems and event-driven architecture.
• Experience with automated testing frameworks such as NUnit, xUnit, or MSTest.
• Knowledge of PowerShell or Python scripting.