So thinking of starting a custom campaign along with being a new DM; does anybody have idea's for varying occupation's that player's could choose to take along with requirements for said jobs i.e a minimum of 10 STR and proficient in Smith Tools to gain employment as a blacksmith? also in regards to economy varying job's having different pay albeit all in GP. Maybe have some occupation's exclusive to certain classes even? Could really appreciate what kind of occupation an artificer might like to take part in as its literally escaping my mind what occupation they could take.

I typically use a character's background to speak to their occupation (outside of adventuring). Xanathar's Guide to Everything has expanded Downtime rules that help characters earn an income as well. If you can find a used copy, it's worth a peek.

It seems like you are describing backgrounds. They already give tool proficiencies appropriate to the background and money. Although I think the money amount is changing in the ‘24 update.

I’m not clear on what you want that the backgrounds don’t already have.

When a PC stops being whatever their background indicated they did and starts their career as an adventurer, their occupation changes to “adventurer.”