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Yijun Chen
Senior Full-Stack Software Developer specializing in IoT and cloud systems
Toronto, ONSenior Full-Stack Software Developer4 years experienceSeniorTechnologyIoTCloud Computing
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About
Frontend-focused engineer who built a full movie recommendation system from concept to production, comparing classic collaborative filtering with LLM-based recommendation approaches on AWS. Emphasizes scalable architecture, strict TypeScript data contracts, and high-quality Next.js/React UI patterns (defensive states, scoped state management, performance optimization) with disciplined QA and feature-flagged rollouts.
Experience
Senior Full-Stack Software DeveloperPulsenics Inc
Full-Stack Software DeveloperPulsenics Inc
Education
University of Torontomaster, Electrical and Computer Engineering (2026)
McMaster Universitybachelor, Software Engineering (2021)
Key Strengths
- Led an end-to-end production project with modular, scalable architecture (ingestion, model execution, evaluation layers)
- Strong frontend architecture discipline: reusable components, separation of presentation vs data-fetching, defensive UI states
- TypeScript-driven data modeling and stable API contracts to reduce runtime bugs
- Pragmatic state management for multi-step workflows (local-first, lift when shared, Context to avoid prop drilling)
- Frontend performance tuning via reduced re-renders and memoization
- Structured delivery in fast-paced environments: incremental scope, staging QA with production-like data, feature-flagged rollouts, post-launch monitoring and iteration
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