Most of my work at Obsidian Systems is operations related. Nix, Kubernetes, CI/CD, Prometheus, Grafana, etc. to run the Canton Network. It's written in Scala, which I usually don't have to deal with, but yesterday we had an incident from stack overflows and the stack trace exactly fit my area of expertise of 11 years ago: stack safe monadic interpreters in Scala. Easy fix: https://github.com/digital-asset/canton/pull/668