Chengchang Yu

AI/ML Solutions

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Production-ready AI/ML implementations, system designs, and cloud infrastructure solutions

Dropbox Architecture Deep Dive

# System Architect

Dropbox Architecture Deep Dive

Engineering a high-frequency file storage system for 600 million users and 500+ petabytes of data

AWSPostgreSQLCassandraRedisKafkaS3
AWS E-Commerce Platform Architecture for Million-Scale Users

# Cloud Architect

AWS E-Commerce Platform Architecture for Million-Scale Users

Design a resilient, low-latency, and cost-optimized AWS e-commerce platform capable of handling millions of users with high availability and disaster recovery

AWSECS FargateAuroraDynamoDBCloudFront
AWS Serverless Image Processing Architecture

# Cloud Architect

AWS Serverless Image Processing Architecture

Design a serverless image processing service that automatically compresses and generates thumbnails after users upload to S3, while scaling to handle 1M+ images per day at minimal cost per image

AWSServerlessPython
AI-Driven Document Processing Platform

# AI Engineer

AI-Driven Document Processing Platform

Build intelligent web applications with AI integration, from personal chatbots to production-ready platforms that transform user input into professional outputs.

Next.jsTypeScriptOpenAIClaudePostgreSQL