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LucasSantana-Dev/README.md

Hi, I'm Lucas (Luk)

Senior Software Engineer · Backend-focused Full-Stack · Node.js · TypeScript · AWS · Cloudflare · AI Tooling

Currently at Thoughtworks (Chicago, remote from GMT-3) · 5+ years shipping cloud-native systems for platforms serving 100k+ monthly users.

Portfolio LinkedIn Email hitgate on PyPI English C2

What I do

I build secure, scalable cloud-native backends and the full-stack interfaces on top of them. Day job is senior consulting at Thoughtworks — previously at CI&T — so I'm comfortable in international cross-functional teams with tight review cultures. Off-hours I run a homelab, ship Discord bots with real users, publish AI-developer tooling on npm and PyPI (RAG evaluation engines, coding-agent skill kits, Cloudflare-deployed apps), and maintain an open-source community platform for Brazilian developers.

Impact highlights:

  • 100k+ monthly users supported on backend infra I built/maintained (Node.js + AWS Lambda)
  • Deployment time 6h → 2h (−30%) by moving to serverless + tuning CI/CD
  • Incident response +40% faster via Splunk/CloudWatch observability
  • Production errors −25% through Mocha/Jest unit + integration coverage
  • Internal workflow efficiency +40% via automations and tool-building

Featured Projects

Project What it does Stack
sharekit Share your AI coding setup — CLAUDE.md, skills, cursorrules — with one command. npx @lucassantana/sharekit install lucassantana Node.js · CLI npm
repaint Claude Code skill for frontend UI that doesn't look AI-made — design tokens, reference library, live browser slop-audit loop Bash · Node.js Stars
Lucky Self-hosted Discord music bot — Spotify stats, autoplay recommendations, React dashboard, moderation suite TypeScript · Prisma · Discord.js CI
hitgate Portable hybrid RAG evaluation harness — BM25 + dense + RRF retrieval, label-free eval, CI-ready. Available on PyPI. Python · Sentence Transformers · BM25 PyPI
ForgeKit AI dev toolkit — rules, skills, and setup for Claude Code, Codex, Cursor, Windsurf, and Copilot TypeScript · Node.js Stars
LinkedIn Engage Chrome extension — AI-powered LinkedIn comments (Groq), connection automation, job pre-fill. 423 tests TypeScript · Chrome MV3 Stars
homelab Self-hosted infra — Docker Compose, Caddy, Tailscale, Prometheus/Grafana, SOPS Python · Bash · Docker CI

Additional private repos (finance tools, infra dashboards, etc.) — available on request.

Tech Stack

Backend & Cloud

Frontend

DevOps, Testing & Observability

Also: Serverless Framework · Splunk · Kubernetes (k3s) · SOPS/age · Tailscale · Caddy · SOLID · Clean Architecture

Certifications & Education

  • AWS Certified Cloud Practitioner
  • Bachelor's in Computer Systems — FIAP (2025)

Open To

  • Senior / Staff full-stack or backend contract opportunities (US · EU · Canada)
  • Open-source collaboration on developer tooling, observability, or AI workflows
  • Architecture + system-design discussions — happy to review or pair

📫 Get in touch: lucas.diassantana@gmail.com · LinkedIn

GitHub Stats

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  1. Lucky Lucky Public

    Self-hosted Discord music bot — Spotify + YouTube + SoundCloud, autoplay recommendations, React dashboard, moderation suite. TypeScript monorepo.

    TypeScript 15 7

  2. linkedin-engage linkedin-engage Public

    Chrome extension for LinkedIn — AI-powered comments (Groq), connection automation, job pre-fill. No tracking, open-source.

    JavaScript 4 1

  3. forgekit forgekit Public

    AI dev toolkit for coding agents — rules, skills, and setup for Claude Code, Codex, Cursor, Windsurf, and GitHub Copilot. One command to start.

    Shell 2 1

  4. homelab homelab Public

    Secure homelab infrastructure with monitoring, container management, and Discord notifications

    Shell 1

  5. hitgate hitgate Public

    Portable hybrid (BM25 + dense + RRF) retrieval engine and a label-free evaluation harness — extracted from a personal AI-assistant memory index and decoupled to run on any source tree.

    Python 2

  6. sharekit sharekit Public

    Share your AI coding setup — CLAUDE.md, skills, cursorrules — with one command. install / preview / rollback.

    Python 1