Backend-Leaning Software Engineer

I'm a generalist software engineer with 10 YOE working on many things: android, operating systems, internal tools, microservices, distributed systems, frontend/backend web dev, high scale storage and search. As you can see by my experience, I love learning. I'm looking for a product role that is backend-leaning in the SF area. I have experience at 20 person startups (Procore/Airtable) up to 15k+ engineers at Apple. I prefer a smaller company where I can wear more hats and have a larger impact on the product.