A GWT db4o user and a Java coder. I also manage infrastructure coded on Chef cookbook which installs and configures Haproxy 1.5, Varnish 4, PHP-FPM, Apache 2.4, NFS, memcached, Percona Xtradb cluster. Testing cookbook with testkitchen, serverspec, chefspec, on Vagrant. Implementing cookbook CI with jenkins which runs same tests with kitchen-openstack triggered by gitlab webhook.