Jarosław Ratajski

I’m a passionate software engineer living in the JVM land – mainly, but not limited to. I also tend to play with electronics and hardware.…

Yifan is a student at Northeastern University. She built a back-end message queue system for the open source project Shared Health Research Information Network (SHRINE)…

Steffen codes at EMnify, a mobile virtual network operator (MVNO) running a custom-built mobile core network for the Internet of Things. He is eager about…

For the last couple of years, I’ve been working on a real-time bidding platform which introduces many architectural, scale and performance-related problems. Even though I…