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

Achievements

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

Organizations

@IFRS-CampusFarroupilha

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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 CPaaS 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 operate with a strong builder mindset, focusing on turning ideas into usable products quickly and iterating based on real feedback.

What I care about:

  • Building SaaS products end-to-end (idea → MVP → distribution → monetization → iteration)
  • Optimizing for speed of validation over overengineering
  • Strong bias toward product thinking: usability, retention, and real user problems over technical purity
  • AI-native products and workflows
  • Growth loops and product distribution

Projects

Adpad – Create winners ads with AI

SaaS AI platform for generating high-converting ad creatives (UGC-style videos, banners, hooks) at scale with AI.

Key aspects:

  • Focus on creative velocity: generate and test multiple variations quickly without relying on designers or editors
  • Designed for affiliates, TikTok Shop sellers, and performance marketers
  • AI pipelines for generating different creative formats aligned with platform dynamics

Tech stack: Confidential
Website: https://adpad.com.br

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

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

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  1. willian-gois willian-gois Public

    My personal readme