Lucas Moreira e Silva Alves

• Owns the sales domain of the backend, running the service and its dependencies on Docker.

TypeScript · Docker · PostgreSQL

• Built an embedded IDE with sandboxed execution through Judge0, plus LLM-driven validation that grades free-form answers instead of matching strings.

Next.js · Vite · FastAPI · Judge0 · AWS

• Replaced Create React App, Webpack and Babel with Vite and SWC, and dropped 80+ stale dependencies. Boot time −80%, production builds −60%.
• Untangled deeply coupled modules and upgraded React Redux, Apollo Client and Axios. 1,500+ circular dependencies removed.
• Migrated the front-end to TypeScript, deleting JavaScript as types landed. 5,700+ lines deleted, codebase −10%.
• Wrote RSpec coverage across features in a mature Rails codebase. 2,000+ tests, ~10% of all test additions.
• Diagnosed and shipped critical production hotfixes using Datadog, Airbrake and the Rails console. Under 1 hour to fix, lowering MTTR.
• Engineered subrental and missing-inventory tracking, server-side rendering for SEO, and accessible auto-contrast theming.
• Acted as the team's front-end reference: mentored engineers, reviewed PRs in depth and unblocked cross-functional work.

React · TypeScript · Ruby on Rails · Vite · redux-observable · RSpec · Datadog

• Built screens and features on the Mirae platform in Next.js, backed by Strapi as a headless CMS.
• Shipped features for the Livelo Marketplace mobile app, with Storybook and Atomic Design as the component system.
• Delivered a port and vessel management app with offline-persisted sessions via redux-persist, i18n, and Firebase dynamic links and cloud messaging.

Next.js · React Native · TypeScript · Redux · Strapi · Storybook · Jest

• Published the React Native app and built the Node.js API behind it, with TypeORM, tsyringe dependency injection and the repository pattern.
• Ran video concatenation on AWS Lambda so mobile clients never did the stitching.
• Built the Next.js business console for printing, batching and monitoring active QR codes.

React Native · Node.js · TypeScript · TypeORM · PostgreSQL · AWS Lambda · Next.js

• Built a ZeroMQ microservice backend with NLP.js for intent extraction and Danfo.js for structured data.
• Automated scheduled website tasks with Puppeteer.

Node.js · TypeScript · ZeroMQ · NLP.js · Puppeteer

• Cleaned and augmented large datasets in Python for deep-learning training on a Portuguese to Libras translator.
• Contributed to Vlibras-Console for model training and testing; results published in SBC Proceedings.

Python · Pandas · React

Elixir MCP server and LiveView dashboard that reads a real brokerage portfolio and answers questions about it. Elixir · Phoenix LiveView · MCP

Published Claude Code plugin that renders Mermaid checkpoints at agent pauses. TypeScript · Mermaid

Interval training builder from 2021, rebuilt on Vite and React 19 with an offline-installable PWA and a gym mode. React 19 · Vite · Zustand · Playwright

Climbing wall route setter with draggable 3D holds and undo/redo history. React · Three.js · TypeScript