Senior .NET Developer needed to maintain existing applications, enhance web and Windows systems, and develop new application modules using Microsoft technologies. Job Requirements Bachelor's degree in Computer Science, Information Systems, or related field
8+ years of experience developing web applications using .NET, C#, and Microsoft SQL Server
EPC industry experience
Strong experience with ASP.NET, .NET Core, and MVC frameworks
Experience building and supporting Windows applications
Experience building and supporting web applications using Microsoft technologies
Proficiency with SQL, T-SQL, stored procedures, and database development
Experience with Entity Framework
Experience with web services
Front-end development experience with HTML, CSS, JavaScript, jQuery, Bootstrap, and Ajax
Strong understanding of object-oriented programming principles
Experience with Azure DevOps
Preferred Skills Experience maintaining and enhancing existing enterprise applications
Experience developing new modules for existing applications
Experience supporting full-time software development projects
Experience with Microsoft-based application architecture
Experience troubleshooting application and database issues
Job Responsibilities Maintain and enhance existing .NET applications
Develop new modules for existing applications
Build and support web applications using .NET, C#, ASP.NET, .NET Core, and MVC frameworks
Build and support Windows applications using Microsoft technologies
Develop and maintain SQL Server databases, stored procedures, and T-SQL scripts
Use Entity Framework for application data access and database integration
Develop and support web services
Build and maintain front-end application features using HTML, CSS, JavaScript, jQuery, Bootstrap, and Ajax
Apply object-oriented programming principles to application development
Use Azure DevOps for source control, work tracking, and development workflows
Pay Details: The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable: The California Fair Chance Act Los Angeles City Fair Chance Ordinance Los Angeles County Fair Chance Ordinance for Employers San Francisco Fair Chance Ordinance Massachusetts Candidates Only: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
8+ years of experience developing web applications using .NET, C#, and Microsoft SQL Server
EPC industry experience
Strong experience with ASP.NET, .NET Core, and MVC frameworks
Experience building and supporting Windows applications
Experience building and supporting web applications using Microsoft technologies
Proficiency with SQL, T-SQL, stored procedures, and database development
Experience with Entity Framework
Experience with web services
Front-end development experience with HTML, CSS, JavaScript, jQuery, Bootstrap, and Ajax
Strong understanding of object-oriented programming principles
Experience with Azure DevOps
Preferred Skills Experience maintaining and enhancing existing enterprise applications
Experience developing new modules for existing applications
Experience supporting full-time software development projects
Experience with Microsoft-based application architecture
Experience troubleshooting application and database issues
Job Responsibilities Maintain and enhance existing .NET applications
Develop new modules for existing applications
Build and support web applications using .NET, C#, ASP.NET, .NET Core, and MVC frameworks
Build and support Windows applications using Microsoft technologies
Develop and maintain SQL Server databases, stored procedures, and T-SQL scripts
Use Entity Framework for application data access and database integration
Develop and support web services
Build and maintain front-end application features using HTML, CSS, JavaScript, jQuery, Bootstrap, and Ajax
Apply object-oriented programming principles to application development
Use Azure DevOps for source control, work tracking, and development workflows
Pay Details: The Company will consider qualified applicants with arrest and conviction records in accordance with federal, state, and local laws and/or security clearance requirements, including, as applicable: The California Fair Chance Act Los Angeles City Fair Chance Ordinance Los Angeles County Fair Chance Ordinance for Employers San Francisco Fair Chance Ordinance Massachusetts Candidates Only: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Job ID: 522140535
Originally Posted on: 5/22/2026
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