Senior Full Stack Developer Remote

The Senior Full Stack Developer will take ownership of a complex, proprietary web application built using ASP.NET MVC, ASP.NET Classic, C#, SQL Server, jQuery, Bootstrap, and React.

This role requires the ability to work independently within an unfamiliar codebase, analyzing and tracing existing code to understand system behavior and data flow. A strong foundation in first principles of server-rendered web architecture is essential, along with the ability to operate effectively with minimal documentation.

Essential Duties And Responsibilities

Include, but are not limited to:

• Own and maintain the existing legacy web platform
• Read, analyze, and modify proprietary C# and ASP.NET code
• Maintain and extend server-rendered MVC and Classic ASP.NET pages
• Build and embed React components within existing MVC views
• Maintain and debug legacy jQuery- and Bootstrap-based client-side code
• Write and maintain SQL queries and stored procedures in SQL Server
• Implement pragmatic modernization improvements without full rewrites
• Ensure the stability and performance of the legacy platform
• Collaborate with teams building next-generation systems to ensure alignment
• Participate in Git-based version control and code review processes
• Communicate status, blockers, and risks clearly with US-based team members
  
  

• Bachelors degree in Computer Science, Software Engineering, or a related field
• Self-directed, with the ability to navigate unfamiliar codebases independently
• Experience with ASP.NET MVC, ASP.NET Classic, or similar frameworks such as Laravel, Django, or Rails
• Experience embedding React components into server-rendered applications
• Understanding of data flow from server-rendered markup into component props
• Experience working directly with stored procedures containing business logic
  
  

• Minimum of 5 years of experience as a Senior Full Stack Developer, Full Stack Developer, or in a similar role
  
  

• Deep understanding of server-side rendering, routing, page lifecycle, and request handling
• Strong proficiency in reading, modifying, and extending C# code
• Experience working within the .NET Framework environment
• Ability to manage front-end build pipelines alongside legacy assets
• Ability to maintain and extend legacy client-side code
• Experience working on pages that combine jQuery and React
• Strong proficiency in JavaScript, HTML, and CSS
• Experience with Webpack, npm, or similar build tools in legacy environments
• Experience using Git within structured workflows
• Participation in peer code reviews
  
  

• Strong verbal and written communication skills, with the ability to clearly explain technical concepts and provide status updates in a remote environment
• Strong analytical and troubleshooting abilities to independently diagnose and resolve complex technical issues
• Self-starter mindset, with the ability to identify issues, propose improvements, and drive tasks forward with minimal supervision
  
  

• Knowledge of web security practices, including XSS, CSRF, and SQL injection prevention
• Experience modernizing legacy systems through incremental improvements
• Understanding of page load optimization and browser rendering performance
• Familiarity with UI, UX, accessibility, and usability principles