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johanguse/README.md

Hello!

Highly skilled and dedicated full-stack developer with over ten years of industry experience, specializing in AI-powered applications, real-time systems, and modern cloud-native architectures. Currently pursuing Applied Artificial Intelligence studies while building production SaaS platforms that leverage cutting-edge technologies, including LLMs, real-time WebSocket systems, and advanced data processing—committed to promoting accessibility and ensuring equal opportunities for all individuals to navigate the web. I firmly believe in the inclusive nature of the Internet and continuously seek ways to enhance both the accessibility and intelligence of my applications. Passionate about combining traditional web development expertise with emerging AI technologies to create innovative, user-friendly experiences that solve real-world problems.


🚀 Featured Projects

AI-powered SaaS platform for converting bank statement PDFs to structured Excel/CSV data

  • Tech Stack: Next.js 15.3, FastAPI, PostgreSQL, Prisma, NextAuth v5, Mistral OCR, Cloudflare R2, Stripe
  • Features: Microservices architecture, AI-powered OCR, subscription management, 95%+ accuracy
  • Impact: Reduces manual data entry from hours to minutes

🔗 LLM Generator (work in progress)

SaaS platform that generates llms.txt files for websites to improve visibility to Large Language Models

  • Tech Stack: React 19, TanStack Router, Hono, Cloudflare Workers, Trigger.dev v3, Firecrawl API, OpenAI API
  • Features: Real-time WebSocket updates, monorepo architecture, intelligent rate limiting, comprehensive OpenAPI docs
  • Highlights: Edge deployment, long-running background jobs with instant feedback

📊 DataTalked (work in progress)

An interactive data visualization platform that transforms datasets into AI-powered narratives and dashboards

  • Tech Stack: React 19, TanStack Router/Table, Convex, AI SDK (Anthropic/OpenAI), Recharts, Clerk Auth, Stripe
  • Features: Real-time database, AI-driven insights, large dataset optimization, role-based access control
  • Focus: Business intelligence through compelling data storytelling

💻 Tech Stack Highlights

Frontend: React, Next.js, TanStack Router/Query/Table, TypeScript, Tailwind CSS, Radix UI, Shadcn/ui
Backend: Node.js, Python, FastAPI, Hono, C# (.NET), Cloudflare Workers, Convex
Databases: PostgreSQL, MongoDB, Cloudflare D1, Prisma, Drizzle ORM
AI/ML: OpenAI API, Anthropic, Mistral OCR, AI SDK, RAG, LLMs
Real-time: WebSocket, Trigger.dev, Convex Real-time DB
Auth: NextAuth, Better Auth, Clerk, OAuth
Cloud: Cloudflare Workers/R2, Edge Computing, Serverless
Payment: Stripe (Subscriptions, Webhooks, Billing)
Data Viz: Recharts, D3.js, Three.js, TanStack Table


Contact me

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johanguse.dev

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  1. hanko_hackathon hanko_hackathon Public

    AI generator crafted for the Hanko Hackathon 2023, harnessing the capabilities of NextJS to create a seamless authentication experience.

    TypeScript 2

  2. afya-pebmed-challenge afya-pebmed-challenge Public

    NextJS app frontend of a checkout system for the Afya PEBMED Challenge

    TypeScript 1

  3. api-go-lang-transations api-go-lang-transations Public

    Golang API w/ Fiber. Used in the test of Warren Brasil front-end challenge

    Go 1

  4. api-cars-auctions api-cars-auctions Public

    AdonisJS API. Designed for the front-end test at InstaCarro.

    TypeScript 1

  5. food-menu-frontend-challenge food-menu-frontend-challenge Public

    A digital menu for a renowned food delivery company in Brazil

    TypeScript

  6. next-saas-template next-saas-template Public template

    Powerful boilerplate with Next.js 14, Prisma, PostgreSQL, Auth.js v5, Resend, React Email, Shadcn/ui, and Stripe.

    TypeScript 23 3