LLM Prompt Purify
Client-side sanitization used in company workflows to secure interactions with LLM agents and web-based LLM tools by reducing sensitive-data leakage to third-party APIs.
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 frontends (Angular/React/Vue.js), TypeScript, Python and Java APIs, and Bash scripting for developer productivity.
Skills
- Languages
- TypeScript, Python, Bash, PHP, Java, C#
- Frontend
- React (Vite, Next.js), Angular, Vue.js (Vite, Nuxt)
- Backend
- TypeScript (Nest.js/Express.js), Python (Quart/Django/FastAPI), PHP (Laravel/WordPress), Java (Spring)
- Testing
- Unit and Features (Jest, Vitest, Pytest, PHPUnit, JUnit), UI (Cypress, Playwright), Behavior (Cucumber, Pytest-BDD)
- Tooling
- Git, Unix-based Shell, LLM Agents, Docker, Container Orchestration (Docker Compose, Kubernetes), Cloud Deployments (Netlify, AWS EKS, Azure Virtual Machines), 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 used in company workflows to structure creative requests, improve visual output quality, and produce usable image drafts roughly 200% faster.
Next.jsTypeScriptReactTailwind CSS
Automation & Productivity
JavaScript/TypeScript utilities, Python scripts, and shell tooling for repeatable reporting, spreadsheet workflows, operating-system tasks, and developer productivity.
At Prestech, this included LLM-agent workflows for news discovery, visual-brief suggestions, and B2B/newsletter drafting; LLM Prompt Purify for safer company interactions with LLM agents and web-based LLM tools; Prompt Shape Creator for faster image-generation briefs; browser scripts for repetitive changes in web-based design tools; approved browser workflow QA and reporting support; and statistical analysis to correlate reporting datasets.
Company-page impressions increased after specialized LLM agents and niche scripts curated, optimized, and generated content workflows.
Tools/languages: trained LLM agents, JavaScript, Python, platform analytics aggregation (LinkedIn).
Company-page reactions increased after LLM-assisted content workflows and browser workflow support were adopted.
Tools/languages: trained LLM agents, JavaScript, Python, browser workflow scripts, platform analytics aggregation (LinkedIn).
Profile follower growth increased after automation-supported content planning and publishing routines.
Tools/languages: trained LLM agents, JavaScript, Python, platform analytics aggregation (Instagram).
Image-generation brief turnaround improved with structured prompt workflows for company creative requests.
Tools/languages: Prompt Shape Creator, Next.js, TypeScript, React, image-generation LLMs.
Search-engine visibility reached first-to-second-place positions in several microregions for strategic targeted keywords, with Lighthouse SEO scores reaching 90-100.
Tools/languages: WordPress/PHP, JavaScript, Lighthouse, SEO QA, Gemini assessment using Google Search, 1,422 keyword-region rows.
Improvement of speed for input on workflow tools, including PROSSaúde
Tools/languages: React, TypeScript, PROSSaúde forms, WhatsApp/ticket-intake automation, queryable digital records.
Experience
Main responsible for maintaining and developing the Nova Prestech website as a whole, alongside internal IT-service tooling, WordPress/PHP site work, ERP/CSM support, virtualization monitoring, and event-driven WhatsApp chatbot flows.
Built JavaScript/Python automation and LLM-agent workflows for content operations, SEO QA, safer LLM usage, image-generation briefs, and support processes. Detailed metrics are summarized in Automation & Productivity.
Open SiteFullstack development and maintenance of CRUDs based on RESTful architecture for complex forms, including interactive schedules, login subsystems, and tabulation with automated index calculation.
Open projectFrontend Development with Next.js and maintenance of the Digital Menu for a small local business in Rio de Janeiro.
Open projectFrontend Development with Create React App and maintenance of the Digital Menu.
Open projectDevelopment of a Soil Calculator using WordPress and React for Organo Labs E-commerce.
Open Site