Klarna is heavily into Erlang, btw: https://klarna.com/jobs/engineering-product https://klarna.com/jobs/engineering-product Every day, thousands of merchants

Klarna is heavily into Erlang, btw: https://klarna.com/jobs/engineering-product https://klarna.com/jobs/engineering-product Every day, thousands of merchants and customers use Klarna’s services. The task of making it all work is far from easy. Our system is built in Erlang and handles real-time transactions 24/7, with no downtime for upgrades.