Skip to content
View willian-gois's full-sized avatar
23 followers · 25 following

Achievements

Achievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pull Sharkx2Achievement: Pair ExtraordinaireAchievement: Arctic Code Vault Contributor

Organizations

@IFRS-CampusFarroupilha

Block or report willian-gois

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don't include any personal information such as legal names or email addresses. Markdown supported. This note will be visible to only you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
willian-gois/README.md

Hi, I'm Willian 👋

Email LinkedIn

Senior-minded Full-Stack Software Engineer

Full-stack developer with strong backend focus, currently working at Zenvia on large-scale systems.

I work daily with:

  • Backend: Node.js (TypeScript), Java (Spring Boot)
  • Cloud & Infra: AWS, Docker, Kubernetes, Redis, Kafka
  • Frontend: React, Next.js, Tailwind

Beyond my day job, I build and experiment with SaaS products, automation platforms, and AI-driven systems, with special interest in:

  • Scalable architectures
  • Event-driven systems
  • Developer tooling
  • AI-powered workflows

Projects

Clara – AI-Powered Personal Finance Assistant on WhatsApp

Personal finance assistant built as my undergraduate thesis, focused on managing expenses through natural conversation on WhatsApp.
I designed and implemented the system end-to-end, from architecture to cloud deployment, and validated it with real users.

Key aspects:

  • Asynchronous, event-driven backend using a Node.js/TypeScript monorepo with Redis and BullMQ for high responsiveness
  • Deep integration with OpenAI for natural language understanding, enabling expense tracking, balance queries, and reminders via chat
  • Fully containerized with Docker and deployed to production on Oracle Cloud
  • Usability tested with 20 real users over 45 days, iterating based on real feedback

Tech stack: Node.js, TypeScript, OpenAI, MySQL, Prisma, Redis, BullMQ, Docker, Oracle Cloud, Sentry
Thesis: https://dspace.ifrs.edu.br/xmlui/handle/123456789/2403

ChatMocks – Realistic Chat Mockups for Content & Marketing

A commercially active micro SaaS for creating highly realistic chat conversation mockups across WhatsApp, iMessage, Instagram, and 15+ other messaging platforms.

Built end-to-end as a solo project, from product design to monetization and analytics.

Key aspects:

  • Subscription-based product with weekly plans and lifetime licenses, fully integrated with Stripe
  • Strong focus on data-driven decisions, with full analytics instrumentation including user behavior, critical events, session replays, surveys, and error monitoring
  • Optimized for speed, simplicity, and creator workflows

Tech stack: Next.js, React, TypeScript, Vercel, Drizzle, Turso (SQLite), Stripe, PostHog, Google Analytics
Website: https://chatmocks.com

Pinned Loading

  1. willian-gois willian-gois Public

    My personal readme