João G.

Professional Summary

Versatile Software Developer with strong experience in Go and high proficiency in Unix-like systems (Linux, BSDs). Skilled in Microservices, API integrations, OCR/NLP systems, deployment pipelines, and automation tooling. Experienced in C and shell scripting for system utilities, server management, and desktop automation. Practical knowledge in Data Science & AI with applied projects in Computer Vision and prediction. Passionate about privacy and open-source.

Technical Skills

• Languages: Go, Python, Shell, Clojure, Haskell, C, Node.js
• Web & APIs: REST, Microservices, API integration, scraping
• Databases: PostgreSQL, MySQL, MongoDB
• DevOps: Linux/BSDs, Docker, CI/CD
• AI/DS: NLP, OCR (Mistral-OCR, pyzbar), OpenCV, Pandas, statistics
• Other: KISS philosophy, Functional Programming, Privacy Tech

Professional Experience

Backend Developer & Computer Vision | Axxis, Brazil | Jan 2025 – Present

• Developed production-grade Go backend modules and automation tooling.
• Built Python microservices:
  • Restricted product recognition microservice (99.6% accuracy, 5,646 real cases).
  • Invoice reader (NFC-e, NF-e, CF-e-SAT) using QR/barcode + OCR (Mistral + OpenCV).
• Implemented Go scraper for Brazilian NFC-e directly from Fazenda.
• Developed flexible search routes with dynamic SQL query building.
• Integrated external APIs (Ingresso.com, WPS Parking).
• Maintained Node.js frontends.
• Dockerized and deployed services (Railway), optimized DB schemas.

System & Automation Projects | Personal / Open Source | 2021 – Present

• Developed Go library for executing python sentences.
• C utilities for OpenBSD system info (status bars).
• Shell scripts for automation (GIF wallpapers, system monitors).
• Developed a Haskell program to manage and regenerate my static article website.
• Started developing takifugu-db, experimental DB in C using OpenBSD utils and library.

Data Science & AI Projects | University / Personal | 2024 – Present

• Applied AI & DS in academic and personal projects.
• Coursework: NoSQL chatbot (Flask + Pymongo) + UI in ClojureScript.

Education

Bachelor of Data Science & AI | PUC-Campinas | 2024 – Present

Additional Interests

• UNIX systems, privacy & open-source (since 15 y/o).
• Aspiring contributor to BSDs projects.
• Experimenting Functional programming.
• Maintains blog at fugu.cafe.