HayaDev

São Paulo, Brasil

Henrique Augusto Yuji de Andrade

Backend / Full Stack Developer

I develop REST APIs and multi-tenant SaaS platforms with Python, Django, Django REST Framework, Node.js, NestJS, TypeScript, PostgreSQL and AWS, including Stripe payment integrations and web and mobile applications with React and React Native.

  • Python
  • Django
  • Node.js
  • NestJS
  • TypeScript
  • PostgreSQL
  • React
  • AWS

I also build 2D games and interactive experiences with biofeedback, using Bluetooth sensors.

View projectsRead articlesAbout me
Projects

Selected projects

Systems, APIs and interactive experiences — with the technical decisions behind each one.

All projects
SaaSIn development2026

Skinner

Multi-tenant SaaS for ABA clinics, with an API, a web panel and a session app.

  • TypeScript
  • NestJS
  • PostgreSQL
  • TypeORM
  • +7
GameIn development2026

Onde estou?

A therapeutic visual-search game with breathing biofeedback, in React and Canvas.

  • TypeScript
  • React
  • Canvas
  • Vite
  • +2
GameCompleted2026

Zendino

A breathing biofeedback game for children, with a heart-rate sensor.

  • TypeScript
  • React
  • Canvas
  • Vite
  • +2
About

Experience

Where I have worked and what I have built.

About me

  1. April 2023 — present

    Remote

    Backend Developer

    Self Intelligence for Life

    Building and maintaining APIs and web applications at a technology startup, working mainly on the backend and contributing to the frontend.

  2. February 2022 — August 2022

    Remote

    Teaching Assistant

    Kenzie Academy Brasil

    Technical support for students training in web development, helping them work through coding problems and reviewing exercises.

Stack

Technical stack

The technologies I work with day to day, grouped by layer.

Backend

  • Python
  • Django
  • Django REST Framework
  • Node.js
  • NestJS
  • TypeScript
  • REST APIs
  • OpenAPI
  • JWT

Frontend and mobile

  • React
  • React Native
  • Expo
  • TypeScript
  • JavaScript
  • TanStack Query
  • Tailwind CSS
  • Vite
  • Astro
  • HTML
  • CSS

Databases

  • PostgreSQL
  • DynamoDB
  • TypeORM

Cloud

  • AWS
  • Lambda
  • API Gateway
  • S3
  • SES
  • RDS
  • EC2
  • Serverless Framework
  • Zappa

Tooling

  • Git
  • GitHub
  • Docker
  • Stripe
  • n8n
  • Azure DevOps
  • Jest
  • Playwright

Games

  • TypeScript
  • React
  • Canvas
  • Web Bluetooth
  • Styled Components
Lab

Lab

Prototypes, games and technical experiments.

Visit the Lab
GameIn development2026

Onde estou?

A therapeutic visual-search game with breathing biofeedback, in React and Canvas.

  • TypeScript
  • React
  • Canvas
  • Vite
  • +2
GameCompleted2026

Zendino

A breathing biofeedback game for children, with a heart-rate sensor.

  • TypeScript
  • React
  • Canvas
  • Vite
  • +2

Get in touch

Open to conversations about backend work, system architecture and full stack development.

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