Our system is big part custom OCaml code and also employs third-party technologies - Debian, ELK, Puppet, and anything else that will solve the task at hand. In this role, be prepared to deal with 25 petabytes storage cluster, 2,000 bare-metal servers, experimental large-scale deployments and all kinds of software bugs and hardware deviations on a daily basis.

Company is based in Singapore, but where are the servers? No way you're hosting 2k servers there, the costs are just too high.