beautiful-dynamo-viewer: an explorer for single-table design in dynamodb
Why I built a desktop app to model and query DynamoDB tables with single-table design, without writing key conditions by hand.
Eduar Castaño
full stack engineer · aws · serverless
some guides & technical notes
serverless image pipeline with aws lambda+node+wasm: from 11.5mb to 91.2kb
How to build a 100% serverless image optimization pipeline on AWS with beautiful-image and zero native dependencies
[guide] deploy lambda with typescript and sam
Practical AWS SAM guide to deploy Lambda functions with TypeScript using CloudFormation templates and TOML configuration
[guide] aws authentication: iam identity center (sso) - the right way in 2026
Complete guide to authenticating in AWS using IAM Identity Center (SSO) and why you should stop using access keys
[guide] generate and manage ssh keys
Generate SSH keys, GitHub setup
some projects
open source [↗] [↗]
beautiful-image
Resize, compress, and apply filters to images directly in the browser, no servers, no file uploads. Built with Rust compiled to WebAssembly.
rustwasmtypescript
beautiful-stt
Transcribe audio and interact with LLMs locally on your machine, Whisper for STT, llama.cpp for inference. Your data never leaves the device. Available for macOS and Windows.
rusttypescriptwhisperllama.cpptauri