Fangrui Dong

Software Engineer Intern @Chah Technology

Toronto, ON, CA

Built a containerized IoT messaging system (TypeScript, Node.js, Docker, Mosquitto) with edge-based filtering, reducing cloud traffic by 80%.• Engineered a video processing pipeline (FFmpeg, AWS S3, SQS) to manage 48h local footage; uploaded compressed highlights only during critical events.• Optimized FFmpeg Docker image size by 90% via Alpine multi-stage builds, improving deployability on edge devices.• Developed secure AWS-based workflows (Lambda, EventBridge, SES, S3) with TLS and pre-signed URL delivery for controlled access.• Designed Python pipelines for multimodal sensor fusion, transforming 1M+ logs into time-aligned series for real-time analytics and predictive modeling.• Collaborated cross-functionally with product managers, designers, and researchers to align IoT and ML systems with real-world deployment needs.

University of Toronto

Master of Science in Applied Computing - MScAC

University of Toronto

Bachelor of Applied Science - BASc