Eduar Castaño

full stack engineer · aws · serverless

some guides & technical notes

[guide] deploy lambda with typescript and sam

November 18, 2025

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

October 13, 2025

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

April 13, 2023

Generate SSH keys, GitHub setup

---view all notes →

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