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PkLavc/README.md

Hi, I'm Patrick Araujo

Typing SVG

Backend Software Engineer focused on AI systems, automation, API integrations, data pipelines, and internal platforms.

I build backend services, operational tools, AI/RAG assistants, ETL workflows, and API integrations that reduce manual work, improve data reliability, and make business processes easier to monitor, audit, and scale.

Links

Portfolio Resume Projects Certifications Email

Current Focus

  • Backend systems, APIs, workers, queues, and internal platforms
  • AI/RAG assistants with controlled context, provider fallback, and execution boundaries
  • API integrations across business systems, CRMs, ERPs, dashboards, and reporting flows
  • Automation pipelines using Python, GitHub Actions, Cloudflare Workers, SQL, and third-party APIs
  • Data reliability, traceability, logs, reprocessing flows, and operational observability
  • Developer-facing documentation, architecture notes, and project write-ups

Engineering Outcomes

My work focuses on building systems that make business operations more reliable, automated, traceable, and easier to scale.

  • Turning manual workflows into backend services, automations, and data pipelines
  • Connecting business systems through APIs, workers, scheduled jobs, and reporting flows
  • Building internal platforms for operations, support, data visibility, and decision support
  • Designing AI/RAG assistants with controlled context, clear boundaries, and backend-driven execution
  • Improving reliability through logs, validation, reprocessing flows, and operational traceability
  • Creating documentation and technical references that make systems easier to maintain and evolve

Engineering Work

I maintain a portfolio of backend, AI, automation, API integration, cloud, security, and systems projects.

Instead of listing every repository here, I keep the full project map on my website with context, technical focus, implementation notes, and links to the relevant GitHub repositories.

Explore Projects

What you will find there

  • Backend systems and API integration projects
  • AI assistants, RAG workflows, and internal platform experiments
  • Automation pipelines, workers, ETL routines, and reporting flows
  • Cloudflare Workers, Python, FastAPI, TypeScript, PostgreSQL, and cloud deployment examples
  • Implementation context, technical decisions, project documentation, and public repository links

Stack

Backend & APIs Python · FastAPI · Node.js · TypeScript · JavaScript · REST APIs · Webhooks · API integrations · OAuth · JWT · backend validation · service boundaries

Data & Automation PostgreSQL · Supabase · SQL · ETL · GitHub Actions · Python automation · Deluge · Zoho Creator · Google Sheets · Looker Studio · Power BI

AI Systems RAG · LLM APIs · AI assistants · prompt boundaries · context loading · provider fallback · vector memory · local LLM experiments · ChromaDB · Ollama

Cloud & DevOps Cloudflare Workers · D1 · KV · AWS EC2 · S3 · Lambda · RDS · Docker · CI/CD · observability · logs · scheduled jobs

Engineering Practices System design · API-first architecture · traceability · reprocessing flows · audit-friendly data models · documentation · operational tooling

Professional Background

I work across backend engineering, systems integration, automation, data workflows, cloud infrastructure, and applied AI.

My experience is centered on building software for real operational environments: internal platforms, API integrations, reporting pipelines, automation routines, technical dashboards, AI-assisted workflows, and business process tooling.

For the full career profile, experience, education, certifications, and languages, see:

Full Resume Certifications

GitHub Activity


pacman contribution graph

GitHub Sponsors

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  1. codepulse-monorepo codepulse-monorepo Public

    High-Reliability Code Execution Engine - Monorepo with Standalone HTML IDE, Node.js/Fastify Backend on Render, E2E Tests & CI/CD.

    JavaScript 11

  2. API-Hub API-Hub Public

    A unified API Registry designed to centralize and manage service endpoints across multiple organizations. This repository serves as a single source of truth for cross-account API discovery and inte…

    9

  3. aegis-sentinel aegis-sentinel Public

    Autonomous infrastructure recovery engine featuring predictive anomaly detection and self-healing capabilities for critical backend systems.

    Python 13 1

  4. cipher-gate cipher-gate Public

    A high-performance Zero-Trust security proxy designed for data privacy and compliance. Implements dynamic data masking (DDM), AES-256 encryption, and automated PII detection to secure sensitive dat…

    Python 11

  5. cloud-deployment-showcase cloud-deployment-showcase Public

    Enterprise-grade Cloud Deployment Showcase featuring production-ready patterns. Demonstrates container orchestration with Docker & Nginx, Infrastructure as Code (IaC), multi-cloud strategies, and a…

    TypeScript 11

  6. event-driven-integration-service event-driven-integration-service Public

    Enterprise-grade Event-Driven Webhook Service built with NestJS. Architected for high-reliability processing of mission-critical data from Stripe, PayPal, and GitHub. Features include HMAC security…

    TypeScript 12