Tianyi He

Led end-to-end development of real-time AI-powered content moderation for chat and voice, improving moderation accuracy by 25% and reducing human review dependency. Architected Kubernetes-based, GPU-accelerated inference services to achieve sub-100ms latency and 99.99% uptime during global traffic spikes, and integrated the Roblox Assistant LLM coding workflow in Roblox Studio.

Developed backend services for TikTok’s real-time content recommendation at global scale and improved the “For You” engine by integrating GNNs, increasing watch time and engagement by 15%. Built multimodal AI search with RAG over ASR-transcribed video content, raising search usage by 20%, and delivered multilingual auto-captioning across 6+ languages.

Contributed to Tesla Autopilot AI data infrastructure, processing up to 400,000 video clips/sec for neural network training and scaling distributed video ingestion and labeling workflows. Built predictive maintenance time-series anomaly detection to reduce repair costs by ~15%, optimized C++/CUDA inference to cut model latency by 20%, and improved backend microservice performance with Redis cachin

Built a real-time analytics dashboard for the Design-to-Source Intelligence platform using Vue.js and D3.js, enabling interactive visualization that reduced procurement decision-making time by 30%. Developed serverless AWS data processing with Lambda, DynamoDB, and API Gateway, cutting data processing latency by 40% and delivering secure, versioned REST APIs for near real-time insights.

Supported modernization of investment analysis tools by assisting in refactoring monoliths into RESTful microservices and building financial data APIs for portfolio analytics and reporting. Contributed to Morningstar Office Cloud features with responsive UI components and interactive dashboards using JavaScript, TypeScript, HTML5, and CSS3, improving usability and reliability with testing and docu

Completed a Master’s degree in Computer Science at the University of Southern California from 2019 to 2021.

Completed a Bachelor’s degree in Electrical Engineering and Statistics at the University of Illinois Urbana-Champaign from 2012 to 2016.