Marco Antonio Gonzalez Junior

Software Engineer, Solutions Architect, AI Specialist

25+
Years building software systems
10+
Years in AI & ML
60+
Pro Certifications
Brazil
São Paulo

I love writing code, I am writing code on a daily basis, and I believe I will be still writing code ten years from now. I build things that scale. Over 25 years I've shipped enterprise platforms, ML-powered products, and — more recently — production generative AI systems: RAG pipelines, fine-tuned LLMs, multi-agent orchestration, and the infrastructure to run all of it reliably.

This blog covers what I find worth sharing — software engineering, architecture infrastructure, and Artificial Intelligence. Occasionally, endurance sports. I write everything myself. I use AI not to generate content for me, rather than guide my thinking in directions where you are mostly like to discover new ideas.

See my AI policy and the tech stack powering this site.

Sabesp Sep 2025 — Present

Lead AI Specialist

  • Leading AI teams on generative AI enablement across water & sanitation infrastructure — one of Brazil's largest utilities.
  • Implementing MLOps/LLMOps CI/CD pipelines on Databricks and Azure, serving foundation and fine-tuned models for customer support and code review agents.
  • Architecting a centralized AI Gateway: model access with fallbacks, spend tracking, rate limiting, security, and prompt caching.
  1. 2024 – 2025 Wipro
    Senior Solutions Architect — AI Legacy modernization using Neo4j knowledge graphs, LangGraph, and AWS Bedrock — 85%+ reduction in migration timelines for COBOL and legacy systems.
  2. 2022 – 2024 IBM
    Senior Solutions Architect — AI Fine-tuned LLMs for financial services. 75% automated resolution rate. Multi-cloud MLOps serving 10M+ monthly interactions.
  3. 2019 – 2022 banQi
    Senior Solutions Architect Microservices platform supporting 10x traffic growth. ML fraud detection cutting fraudulent transactions by 40%.
  4. 2015 – 2019 Petlove
    Tech Lead Brazil's largest pet e-commerce. Membership platform at $2M+/mo. Grew team and data infrastructure through 1500% business expansion.
  5. 2012 – 2015 Jüssi
    Solutions Architect Facebook and Google Marketing Partners. Automated Ads campaigns for the biggest Brazilian brands, managing $500M+/mo in spend.
  6. 2008 – 2012 Editora Abril
    Senior Software Engineer Biggest media group in Latin America. Digital transformation of the content management system for the biggest media publisher in Brazil — 500K+ monthly users.

Architecture

Domain-Driven Design, Clean Architecture, Event-Driven, Microservices, Enterprise Integration Patterns

Cloud & DevOps

AWS | Azure | GCP Solutions Architect, DevOps Engineer, and Artificial Intelligence systems.

Kubernetes, Containerization, Terraform, CI/CD, Infrastructure as Code, Serverless

AI & Machine Learning

Generative AI, LLMs, Fine-tuning, RAG Systems, Knowledge Graphs, Multi-Agent Systems, MLOps, LLMOps

Technical Leadership

Hands-on. 37+ years programming.
Passionate about open source software, technology strategy, innovation, digital transformation and team building.

AWS

  • Solutions Architect Professional
  • Data Engineer Associate
  • ML Engineer
  • ML Specialty
  • AI Practitioner
  • Solutions Architect Associate
  • Developer

Other

  • Stanford ML & Deep Learning
  • IBM AI Engineering Professional
  • Data Science