I have no idea what I do... What is this job called? Please HELP!

What do you call someone that improves the percentages of multiple KPI's using various online and offline methods/tools? I ask because I have a decade of experience helping businesses online with everything (you name it I've done it from app development, websites, marketing, course creation, funnel conversions, copywriting, explainer videos... I've done it all) I want to specialize in something and even though I never thought this would be a problem, my skill set is to big/broad. What do I call myself if I want to simply help people improve their businesses where I see they are wasting/lacking? Common things I do is::​a. increase the amount of buying customers/clientsb. test and improve their conversion rates in their funnel and socials (subscribers or sign ups mostly)c. increase their purchase profits (upsells, cross-sells, downsells)d. get these people to return to buy more, or bring people to us (referrals and affiliates)​I've seen the term "growth hacker" but I don't think this fits me because it's usually focused on startups and not already proven sustainable businesses. Also seems to have a bit of a stigma attached and is often focused only on SaaS products. I do SaaS clients, but I also do physical products and digital memeberships/products/courses/info-products and also online and offline services. So once again, I do it all and nothing is clear to my prospects.​Over different times I thought I was a growth hacker, business development, product manager, project manager, marketing consultant, business consultant... These were all either to specific in one narrow area, or super broad. I hope I am just missing something i haven't heard before OR I am misunderstanding something (like perhaps growth hacker is suitable?)​Please help me find out who I am (lol seriously though). I grew up poor, taught myself all this from taking every job I could get and I've now been able to work with some amazing people I am very proud of but I need to be able to tell people what I do.​ via /r/business https://ift.tt/2QmrWR3