Shawn Klein

This site, fully defined as code. A private S3 bucket serves content exclusively through a CloudFront distribution with Origin Access Control. Route53 alias records, an ACM TLS certificate, and a GitHub OIDC trust are all managed in a single CDK TypeScript stack. Pushes to main trigger GitHub Actions: CDK deploy, S3 sync, and a CloudFront cache invalidation — zero manual steps.

Stock portfolio analysis app for novice to intermediate investors. A FastAPI backend aggregates quotes, fundamentals, analyst ratings, earnings surprises, technical indicators (SMA, RSI, golden cross), and macro data across up to 10 tickers simultaneously using asyncio.gather — roughly 75 parallel HTTP calls per request. Claude AI generates streaming SSE analysis and plain-language explanations. Containerized with Docker + docker-compose; deployment to AWS ECS Fargate via CDK in progress.

Password-protected photo and video gallery serving 5,000+ media files across five family members. A Lambda@Edge viewer-request function validates a cookie on every CloudFront request — unauthorized users see a login gate, nothing else reaches S3. A separate S3-triggered Lambda extracts EXIF year data from newly uploaded images and updates the gallery's JS data files automatically. Custom vanilla JS gallery with decade filtering, lightbox, and video playback.

Full-stack ERP built on the MERN stack. Features interactive Gantt charts for project scheduling, estimate management, and employee assignment workflows. REST API backend with JWT authentication; React SPA frontend with real-time schedule visualization.

Serverless function that performs gRPC health checks against internal services via AWS API Gateway. Routes HTTP requests through a Lambda function that speaks gRPC upstream — demonstrating protocol bridging and Lambda integration patterns within a VPC.

Scala MapReduce job deployed on AWS EMR to aggregate and count log events across large distributed datasets. Demonstrates distributed computation patterns, HDFS I/O, and Hadoop ecosystem tooling in a cloud-native environment.