I’m Gabriel, also known at @gabrivoy in social media and online games.

I’m a Machine Learning Engineer with ~6 years building and operating production ML systems end-to-end: data pipelines, training workflows, real-time serving, monitoring, and evaluation. I enjoy working at the intersection of ML/LLMs, software engineering, and systems, partnering closely with product and domain experts to ship reliable solutions.

I'm also pursuing a master's in Computer Science at PUC-Rio (you'll see a lot of my master's work here)!

Professional experience working in agile teams using Scrum’s Agile Methodology, concerned with product beyond its technical part, and generating the highest possible value within each delivery.

• Languages: Python (primary), SQL, (some) Go.
• Backend & APIs: FastAPI, Flask, Django, streaming APIs (SSE), stateful services.
• ML & Data: NumPy, Pandas, SciPy, scikit-learn, PyTorch, TensorFlow, XGBoost, PySpark.
• LLMs & Retrieval: agent workflows (LangGraph), prompt engineering, hybrid retrieval (dense + sparse), reranking, vector databases (Qdrant, Milvus), offline evaluation (MAP@K, nDCG@K, MRR).
• MLOps & Infrastructure: Docker, MLflow, Airflow, DVC, Terraform, CI/CD, testing (pytest), typing (MyPy/Pyright), linting (Ruff).
• Cloud & Platforms: AWS and Azure ecosystems (containerized deployments, storage, managed databases, observability).
• Observability: logs/metrics/tracing, ELK stack, Grafana/Loki.

• Develop research, models and solutions that bring real value to the world.
• Turning ambiguous real-world problems into well-defined ML systems.
• Reproducibility, evaluation rigor, and deployment reliability.
• Clean interfaces, strong typing, and maintainable pipelines over "notebook-only ML".

• I have a beautiful wife. That's my biggest nerd flex.
• I’m a Christian ✝️ and enjoy learning more about philosophy and theology.
• I’m "rebuilding" my reading habits after years of mostly technical books. I'm currently reading a lot of C.S. Lewis.
• I’m big on video games: League of Legends (hard-stuck Emerald 😅) and Monster Hunter (sometimes online chess too).
• I used to be a Jiu-Jitsu blue belt, but took an arrow to the knee. You know the story...
• I love spending time with friends and family.

You can find me on my social media linked below, mail me or connect with me on LinkedIn: