Re: Never trust a CV
Not even just technical roles, I know at least six people whose LinkedIn profile (and probably their CV although I've not seen all of them) states that they were the Programme Manager for a large scale multi-company implementation and transformation programme. In reality, every one of them was a project manager looking after the business acceptance side of one or more workstreams in a single company in the group. Not an ounce of actual technical delivery amongst them.
I automatically downgrade "lead for" on a CV to "worked in a project/team that had people working on" unless I know otherwise but it's really not easy unless you're familiar with the specific technology that's being claimed. I know a little about a lot of things but most importantly, I know my limits!