All of the essential knowledge to succeed in the job is niche and proprietary. Most of the skills are not transferrable or worthy enough to put on resume, other than basic Linux skills.
Individual projects are not encouraged by mgmt. - instead they require employee to go above and beyond job requirements- on actual transferrable skills like python coding, tableau views, GCP bigquery, cybersecurity etc. Most workers are on pager duty / on-call which drains personal time outside 9-5 - even with offshore teams present- getting calls at 3am - disturb sleep.