E-mail them directly? Check if they have a twitter feed (and one that actually interacts with ppl, not a PR firehose) and send them a DM? Alternatively, look u

E-mail them directly? Check if they have a twitter feed (and one that actually interacts with ppl, not a PR firehose) and send them a DM? Alternatively, look up folks on Linkedin working at that company, preferably sysadmins/devops/whatever-its-called-this week, and e-mail them?