Senior Single Page Application Developer with HTML, CSS3, JavaScript experience required to upgrade, test, implement software components of Client applicat
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on November 5th, 2025
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Starting date : 1 position to fill as soon as possible
Description
Our GTA based, Municipal Government client requires the services of a Senior Single Page Application Developer with HTML, CSS3, JavaScript experience to upgrade, test, implement software components of Client application portal.
ROLE:
The resource will be expected to develop, upgrade, test, implement, and document software components of client's application portal. Document technical specifications and designs and troubleshoot and resolve application issues as needed. Available to work independently and as a team with the stakeholders to document the business processes and requirements for the contract lifecycle framework in a hybrid mode, coming into the work location 2-3 days a week.
Duties
- Designing, developing, upgrading, testing, and implementing software components for the secure portal.
- Documenting technical specifications, system designs, and implementation details related to the portal.
- Supporting the secure submission and handling of sensitive medical documentation and special collection forms.
- Troubleshooting and resolving application issues related to portal functionality, data integrity, and user access.
- Participating in the planning and estimation of development tasks and enhancements to support evolving program needs.
- Collaborating with internal stakeholders to ensure the portal meets accessibility, privacy, and security requirements for handling confidential medical information.
MUST HAVE:
Extensive experience in developing Single Page Application development using HTML5, CSS3, JavaScript, JQuery, Bootstrap, and frameworks such as Backbone, React as well as API integration with REST (JSON, XML) APIs.
Extensive experience working independently with minimal supervision on application architecture and integration as well as managing architecture diagrams, technical documents, risk assessment, digital accessibility compliance, and QA/UAT feedback.
Extensive experience in root cause analysis during unanticipated outages by providing troubleshooting and debugging recommendations and support.
Experience developing digital products that comply with accessibility standards and/or best practices (WCAG 2.x AA, AODA, WAI-ARIA) while optimizing accessibility features of the platform (Web, iOS, Android).
Requirements
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