I've been doing work (non-aviation related) for Brunei Shell Petroleum for a decade and visit Brunei every second year.
If you are a bit more mature, and possibly have a family, Brunei is a great place. Very comfortable, quiet and safe. Probably a bit too quiet for a young single guy.
BSP are avery professional and decent outfit, run by locals, but heavily influenced by the poms (ala BP).