Senior Front End Development Specialist (10+ years) required to design, develop, test, and implement customer-facing applications using HTML5, React, Stencil.Js, and REST APIs. ) Our public sector client is seeking a Senior Front End Development Specialist (10+ years) to design, develop, test, and implement customer-facing applications using HTML5, React, Stencil.Js, and REST APIs. This role supports the development of an online self-service solution that integrates with existing digital services. The successful candidate will contribute to front-end development, application integration, accessibility compliance, and secure customer-facing functionality supporting large-scale public sector operations. Contract, Toronto, Hybrid, Working Hours: EST Must Haves Extensive integration of REST APIs using JSON and XML for enterprise web applications Extensive work on application architecture , technical documentation, risk assessments, accessibility compliance, and QA/UAT feedback management Experience developing accessible digital products compliant with WCAG 2.1 AA , AODA , and WAI-ARIA across web, iOS, and Android platforms Post-secondary education in computer science or a related discipline, or equivalent combination of education and experience Nice to Have Experience developing secure customer-facing applications in a public-sector or highly regulated workplace Experience maintaining large-scale information technology applications Experience conducting root cause analysis, troubleshooting, and debugging during application outages Responsibilities Design, develop, upgrade, test,



and implement software components Document technical specifications, system designs, interface specifications, and integration details Troubleshoot and resolve issues related to system functionality, data integrity, integrations, and user access Collaborate with project team members and integration partners to support solution implementation Develop responsive, accessible, and secure front-end application components Implement integrations with City systems and REST-based APIs Ensure developed interfaces comply with WCAG 2.1 AA, AODA Our public sector client is seeking a Senior Front End Development Specialist (10+ years) to design, develop, test, and implement customer-facing applications using HTML5, React, Stencil.Js, and REST APIs. This role supports the development of an online self-service solution that integrates with existing digital services. The successful candidate will contribute to front-end development, application integration, accessibility compliance, and secure customer-facing functionality supporting large-scale public sector operations. Contract, Toronto, Hybrid, Working Hours: EST Must Haves 10+ years developing Single Page Applications using HTML5, CSS3, JavaScript, JQuery, Bootstrap, React, Backbone,



and Stencil.Js Extensive integration of REST APIs using JSON and XML for enterprise web applications Extensive work on application architecture , technical documentation, risk assessments, accessibility compliance, and QA/UAT feedback management Experience developing accessible digital products compliant with WCAG 2.1 AA , AODA , and WAI-ARIA across web, iOS, and Android platforms Post-secondary education in computer science or a related discipline, or equivalent combination of education and experience Nice to Have Experience developing secure customer-facing applications in a public-sector or highly regulated environment Experience maintaining large-scale information technology applications Experience conducting root cause analysis, troubleshooting, and debugging during application outages Responsibilities Design, develop, upgrade, test, and implement software components Document technical specifications, system designs, interface specifications, and integration details Troubleshoot and resolve issues related to system functionality, data integrity, integrations, and user access Collaborate with project team members and integration partners to support solution implementation Develop responsive, accessible, and secure front-end application components Implement integrations with City systems and REST-based APIs Ensure developed interfaces comply with WCAG 2.1 AA, AODA Disclaimer: AI may be used in evaluating candidates. This posting is for an existing vacancy. #J-18808-Ljbffr

📌 Senior Front End Development Specialist (Toronto)
🏢 S.I. Systems
📍 Toronto