I'm a systems administrator, I can develop and understand code in a number of languages, ranging from Shell scripting and other interpreted languages to Go and Clojure.
I have clear understanding of promise theory the basis of configuration management engines, CFEngine and Puppet, also understanding of other configuration frameworks like Chef or Ansible. I can create if required custom resource types on Puppet using Ruby as provider.
I have understanding of containers technology, from Solaris zones, to Linux OpenVZ, and more modern approaches like Docker, how to build and scale.
I can perform administration of databases like MySQL and in a lesser degree Postgres, Mongo, Redis.
I might be able to configure or create orchestration systems using load balancers and centralized metadata systems.
I have work with cloud providers and I know how to talk to them using API calls to create and manage resources.
I know how to talk to the Zabbix API to create dynamic/autodiscovered monitoring.