About
Hey there! I’m Leandro Fernandes, and I absolutely love solving tough data problems. I’ve spent years building systems that process millions of records daily, designing NLP data pipelines that understand what people are saying, and figuring out how to make those pipelines faster and smarter. Whether it’s optimizing PySpark jobs or deploying ML models that work in real-time, I get excited about turning raw data into something useful.
In 2022, I made the big leap from Portugal to the USA to take on a Senior Data Engineer role at Mobileum in Dallas, Texas. It’s been quite a journey - from working as an Application Data Engineer in Braga to working in NLP analytics projects and big data systems.
This page is where I share what I’ve learned along the way - scripts that save hours of time and insights I’ve picked up from building production systems at scale, both in Europe and the States.
What You’ll Find Here
- Practical scripts and automation tools I use daily
- SQL optimization tricks and database design tips
- Real-world data engineering challenges and solutions
- Lessons learned from building NLP and distributed systems
- Stories from my work at Mobileum and open source contributions
Get In Touch
Feel free to reach out! I’m always happy to connect with other data engineers, swap stories about tough pipeline problems, or just chat about the latest in data engineering.
Thanks for stopping by!