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Achievements

Achievement: Pair ExtraordinaireAchievement: StarstruckAchievement: YOLOAchievement: Pull Sharkx2Achievement: QuickdrawAchievement: Arctic Code Vault Contributor

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@engide @Kalify-Inc

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yagasaki7k/README.md

Fullstack Software Engineer (JavaScript/TypeScript)

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About Me

I am Anderson Marlon (also known as Yagasaki), a fullstack software engineer and Brazilian indie hacker.
I specialize in building scalable SaaS platforms, intelligent integrations, and automation systems using JavaScript/TypeScript.

My first contact with programming was in 2014. Since then, I have developed expertise in designing and implementing solutions that combine robust backend architectures with modern, responsive frontends. I have a strong background in API development, AI integration, and high-impact product delivery.

Core Skills

Frontend: React, Next.js, TypeScript, Sass, Redux, HTML5, CSS3, UI/UX
Backend: Node.js, NestJS, Express, Fastify, Bun.js, GraphQL
Databases: PostgreSQL, MySQL, SQLite, MongoDB
Cloud & DevOps: AWS, Google Cloud, Firebase, Supabase, Hasura, Vercel
Integrations: OpenAI, WhatsApp Business API, Stripe, Rocket.Chat, DialogFlow

Selected Projects

  • AI-Powered Astrology System – OpenAI + WhatsApp integration delivering over 95% validated accuracy and handling 50,000+ interactions per month, increasing user engagement by 38%.
  • Stripe Subscription Platform – Automated monthly and yearly billing with advanced churn and LTV metrics, reducing cancellation rates by 18% and increasing annual recurring revenue by 25%.
  • Multi-Channel Chatbot – Architecture integrating Rocket.Chat, DialogFlow, and WhatsApp to process over 1.2 million messages per quarter while reducing average response time by 40%.
  • UI/UX Redesign with Stripe Integration for SaaS – Optimized payment flow, increasing conversion rates by 32% and reducing cart abandonment by 21%.
  • Open Source Contribution – AbacatePay Payment Gateway – Implemented AI enhancements for technical support chatbot, reducing manual ticket volume by 35% and improving resolution speed by 50%.

For more details, visit my portfolio: yagasaki.vercel.app

Contact

Email: yagasakiwanderlust@proton.me
WhatsApp: Message me

"Code is a tool. Impact is the goal."

Pinned Loading

  1. Visual Studio Code Config Visual Studio Code Config
    1 
    {
    2 
        // Initial Settings - Yagasaki
    3 
        "workbench.colorTheme": "Activate UMBRA protocol", // Theme
    4 
        "material-icon-theme.activeIconPack": "nest", // Icons
    5 
        "editor.fontFamily": "JetBrains Mono", // Font
  2. website-steamfolio website-steamfolio Public

    Building a customizable portfolio interface in the style of Steam. Using Bun, React and Vite.

    TypeScript 34 9

  3. Terminal Windows Terminal Windows
    1 
    {
    2 
        "$help": "https://aka.ms/terminal-documentation",
    3 
        "$schema": "https://aka.ms/terminal-profiles-schema",
    4 
        "actions":
    5 
        [
  4. website-essentials website-essentials Public

    Utilities, extensions, and app tools for your computer

    JavaScript 6 7

  5. Oh-my-zsh config Oh-my-zsh config
    1 
    # If you come from bash you might have to change your $PATH.
    2 
    export PATH=$HOME/bin:/usr/local/bin:$PATH
    3 
    
              
    
              
    
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    # Path to your oh-my-zsh installation.
    
              
    
              
    
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    export ZSH="$HOME/.oh-my-zsh"
    
              
    
          
    
    
    
  
    

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          website-onigirihardcore  website-onigirihardcore          Public
        
    
      
    


      
    
        Onigiri Hardcore is a website about news, games, animes and entertainment
      
    

      
    
          
  
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