Fastmail

Fastmail is a values-driven alternative to Gmail that puts people first. We have great benefits and a great team. On the backend, we use Debian, Bash, Perl, Apache, Consul, Cyrus, MySQL, Nginx, Postfix, Prometheus, and of course many other things. We host everything ourselves in physical datacenters. Much of our software is open source, including our Javascript framework. We're heavily involved in the construction and maintenance of open standards, and of course you'll be working a lot with the JMAP protocol in most of these roles!