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Billy BautistaSoftware Engineer

Crafting elegant digital experiences through clean code and thoughtful design. Full Stack Engineer with the ability to work across both frontend and backend, specializing in building fast, scalable web applications.

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Years Experience

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Projects

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Clients

I am a Full Stack Engineer with 4 years of experience, specializing in the JavaScript ecosystem. I build scalable backends with Nest.js and TypeScript, modern frontends with React and Next.js, and mobile applications using React Native.
BUILDINNOVATEDESIGNCREATEOPTIMIZESCALEDELIVERITERATE
BUILDINNOVATEDESIGNCREATEOPTIMIZESCALEDELIVERITERATE
BUILDINNOVATEDESIGNCREATEOPTIMIZESCALEDELIVERITERATE

Tools I use to build

React
React
Next.js
Next.js
TypeScript
TypeScript
JavaScript
JavaScript
Node.js
Node.js
Tailwind CSS
Tailwind CSS
Prisma
Prisma
PostgreSQL
PostgreSQL
MongoDB
MongoDB
GraphQL
GraphQL
Express
Express
Nest.js
Nest.js
React Query
React Query
Supabase
Supabase
Python
Python
Django
Django
Plasmo
Plasmo
Sanity
Sanity
From crafting fluid animations to architecting scalable databases, I build end-to-end solutions designed to make an impact. Every line of code, every interaction, every decision engineered to deliver results that matter.

Drag & Explore

Full-Stack Engineering
End-to-End Development
API Design
Data Modeling
Performance Optimization
User Experience
Backend Architecture
Frontend Architecture
Code Maintainability
Product Thinking

Selected Projects

2026In Progress
Odin

Full-stack job search management platform with Chrome extension. Built with NestJS backend API, Supabase for database and authentication, and Plasmo-based extension. Includes automated application tracking, analytics, and job matching algorithms.

Odin
2025Completed
Arbitrage Card

ArbitrageCard is the only discount gift card platform designed for arbitrage sellers. The Chrome extension streamlines management by generating multiple cards for exact amounts, facilitating detail copying and order number assignment.

Arbitrage Card
2025Completed
Portero

Portero protects every interaction with language models, securing data and controlling outputs in real time. It works silently in the background so teams can build with confidence, making security a natural part of the process rather than a blocker.

Portero
2024Maintenance
Maui App

Full-stack business management platform built with React Native and Node.js. Features RESTful API architecture, PostgreSQL database with Prisma ORM, and real-time data synchronization. Comprehensive dashboard for managing all business operations.

Maui App