LLM Prompt Purify
Client-side sanitization to reduce leakage of sensitive data to third-party LLM APIs. Informed by hands-on LLM Agent orchestration at Prestech.
AngularTypeScriptC#
Aron Barbosa de Oliveira
Full-Stack Software Developer — TypeScript, Python, Shell Automation
I build internal tools and web applications with a focus on maintainability, automation, and practical AI integration. Experienced with TypeScript (Angular/React/Vue.js), Python APIs, and Bash scripting for developer productivity.
Skills
- Languages
- TypeScript, Python, Bash, PHP, Java, C#
- Frontend
- Angular, React (Vite, Next.js), Vue.js (Vite, Nuxt)
- Backend
- Nest.js, Express.js, Python (Quart/Django), PHP (Laravel/Wordpress)
- Testing
- Jest, Vitest, Cypress, Playwright, Pytest, PHPUnit
- Tooling
- Git, Linux (Debian-based), LLM Agents, Docker, CI/CD (GitHub Actions)
Featured Projects
PROSSaúde Client App
Client-side application supporting a real university extension project with complex forms, RESTful data flow, and automated index calculations.
ReactTypeScript
CRM Test
Full-stack CRM with Nest.js backend demonstrating auth, CRUD, API integration, tests, and deployment-ready architecture.
Nest.jsTypeScriptRESTAuthTesting
Prompt Shape Creator
Image-generation prompt briefing form with SMTP email delivery, clipboard fallback, autosave, and bilingual auto-detection. Built with modern React patterns (useActionState, useTransition).
Next.jsTypeScriptReactTailwind CSS
Automation & Productivity
Shell scripts, JavaScript/TypeScript utilities, and Python tools for operating system administration, spreadsheet automation, and developer productivity.
Experience
Nova Prestech
Internal tooling: orchestration of LLM Agents within IDEs and TUIs; Event-driven Architecture for WhatsApp Chatbots (MVC); Virtualization monitoring (Hexagonal Architecture); ERP forks (FOSS-based) tuned with Domain-Driven Development and MVC; Prompt engineering for LLM agent pipelines (web scraping for tech news/marketing, social media writing with B2B language and style directives); SEO optimization for portfolio websites. Fullstack development with Laravel, Django, and React.js. Minor experience with WhatsApp Business and Meta Business Suite automations.
University Extension Program PROSSaúde — UFRJ
Fullstack development and maintenance of CRUDs based on RESTful architecture for complex forms, including interactive schedules, login subsystems, and tabulation with automated index calculation.
Tia da Praia da Bica — Digital Menu
Frontend Development with Next.js and maintenance of the Digital Menu for a small local business in Rio de Janeiro.
Ana Doces — Creative Confectionery
Frontend Development with Create React App and maintenance of the Digital Menu.
Organo Lab — Soil Calculator
Development of a Soil Calculator using WordPress and React for Organo Labs E-commerce.