🌴 JobsLeisure.com

Where Work Meets Adventure

← Back to Leisure Jobs

Senior Front-End Developer to work on a legacy ASP.NET MVC Modernization & UI Performance Enhancement.

Hospitality Full Benefits Career Growth
Company

S.i. Systems

Location

Calgary, Canada

Posted

March 19, 2026

Start Your Adventure

Join our team and work where others vacation

Apply Now

About This Opportunity

Our client is looking for a Senior Front-End Developer to work on a legacy ASP.NET MVC Modernization & UI Performance Enhancement .

Must‑Haves

  • 5+ years of front-end development experience building enterprise-grade web applications
  • Strong expertise with JavaScript, jQuery, Bootstrap, HTML5/CSS3, and responsive UI frameworks
  • Proven success modernizing legacy ASP.NET MVC (Razor) front-ends and improving server-side rendering performance
  • Hands-on experience integrating and consuming REST APIs, including authentication handling and error states
  • Deep experience optimizing large data grids/tables (e.g., DataTables) including server-side pagination, filtering, and search for datasets in the hundreds of thousands to millions
  • Strong understanding of cross-browser compatibility, WCAG accessibility standards, and UI/UX best practices
  • Ability to analyze, refac...