Location: Fully remote (Canada) Duration: Milestone-based freelance contract

Overview A large organization working with extensive volumes of imagery, video, and audio is building a next-generation multimodal AI platform to help experts analyze and manage content at scale. The platform performs first-pass analysis using computer vision, speech-to-text, and language models, then presents findings to human experts for review, correction, and approval. This is a software architecture, integration, and application development effort that assembles best-in-class existing AI services into a robust production platform.

The developer will build the two core applications: a review-and-validation workspace for expert operators and a powerful search experience across the archive.

Key Responsibilities

- Build an operator workspace for reviewing imagery and video, AI-generated metadata/transcripts/summaries, and approving, rejecting, or editing AI recommendations with workflow status and confidence indicators
- Develop role-based admin views for configuration, users/permissions, and workflow/system-health monitoring
- Create a search interface across imagery, video, metadata, transcripts, and contextual information with retrieval of archived content
- Integrate cleanly with REST APIs and ensure the UI is fully accessible (WCAG 2.1 AA)
- Deliver data-dense,



high-trust interfaces where operators can see AI suggestions, confidence levels, and source media to make quick decisions

Required Qualifications

- 6+ years full-stack development with production ownership of complex, data-heavy web applications
- Demonstrated delivery of review/annotation/validation or other human-in-the-loop UIs with ability to name the product and role in it
- Strong modern JavaScript framework experience (React, Angular, or Vue) plus solid API/back-end integration
- Proven accessibility work meeting WCAG 2.1 AA standards
- Portfolio of comparable shipped applications
- Must be based in Canada and able to contract as an independent professional

Preferred Qualifications

- Experience with in-browser media/video players and large-media rendering
- Search and faceted-filtering UI development
- Design-system experience
- Role-based access control implementation in the UI layer
- Experience delivering complex software systems for government or regulated industries

Work Location & Requirements

- Fully remote position
- Must be based in Canada
- Independent contractor engagement (not employment)
- Selection process includes review of background and past work, followed by a short technical assessment/coding exercise

📌 Full-Stack Application Developer — Multimodal AI Platform - Freelance (Canada)
🏢 CrowdPlat
📍 Canada