Generate Many of custom vector / SVGs in Sketch with lower number of vertexes

Over the next 3-4 weeks, I need someone to collaborate with me on creating clean vector art / SVGs in the programme Sketch. I have character PSD files that I need to convert to svgs. As a result, the body, shirt, spectacles, hair, and so on will all be separate SVGs with their own layers. Because I'll be keeping all of these assets in code, I'll require clean lines with no unnecessary vertexes. I can show you an example of one of the SVGs I made from a picture that is exactly what I require. I'd like to work with someone that works quickly but also performs a good job so that I don't have to manually check hundreds of items. You'll have to use your best judgement when deciding where to put different layers. This is impossible to achieve using a tracing tool and merging forms. This completely obliterates the method I need to store the assets. Each shape must be handcrafted.