Also these!

Speeding Up Our Build Pipelines - https://news.ycombinator.com/item?id=20775297 - Aug 2019 (24 comments)

The infrastructure behind one of the most popular sites in Greece - https://news.ycombinator.com/item?id=9982361 - July 2015 (5 comments)

Working with the ELK stack - https://news.ycombinator.com/item?id=9008119 - Feb 2015 (35 comments)

They're one of the largest employers of web programmers in Greece, though, right?

Yeap, it's a bit strange, but the post was very well written, with a nice breakdown and easily understandable steps that can be followed by most software engineers.

There have been some sporadic posts from Skroutz in the past, but nothing that gained so much attention.

For those that don't know it, Skroutz is the biggest Greek online price aggregator/e-commerce market/price comparison site.