About

Hi, I’m Florents! Friends call me Flo. I was born 34 years ago. After living the first five years of my life in Visokë, Albania, my family moved to Salamina, Greece, where I grew up. I now split my time between Athens and Salamina.

I self-identify as a data generalist. My work sits at the intersection of database engineering, AI, web crawling, and data journalism - blending research, engineering, and leadership along the way.

Open Source

I’m an active open-source developer and core engine contributor to PostgreSQL: “The World’s Most Advanced Open Source Relational Database”.

My core work dives deep into database internals, with a special focus on advancing SQL/JSON capabilities, expanding JSONPath to support richer text processing and more advanced features like native full-text search,

Beyond the core engine, I design and maintain a rich ecosystem of open-source C/SQL extensions. This includes embedding a Redis-like in-memory database natively inside Postgres (spat), querying PDFs directly from the database (pgPDF), integrating jq syntax into SQL (pgJQ), and building advanced tools for statistical correlation discovery (pgxicor, vasco). Ultimately, I love pushing the boundaries of what modern relational databases can do.

My open-source software projects are available on github.com/Florents-Tselai. My professional profile is on LinkedIn

I also do pro-bono work for non-profits.

If you think we could work together or would just like to talk, let’s talk!

diofanti.org

If you’re a Greek journalist, politician, or concerned citizen, you may have come across diofanti.org, a civic-tech platform I’ve built that promotes government transparency and citizen empowerment, enabling people to track public spending and decisions in Greece. government spending in Greece. Here’s a demo video showcasing it.

I try to read as many books as possible. I’m generally interested in the evolution of military strategy and the history of war, as well as the evolution of trade throughout human history.