Data Analytics Platform Builder

I've previously built APIs for IoT device management/update, and currently fairly 'full-stack' (necessarily, having joined as engineer #3, though leaning increasingly toward backend/db/infrastructure) building a data analytics platform for farming. I enjoy the challenge of more complex work that perhaps require some research, a calculator, even a textbook; from which I learn something new or refresh some theoretical knowledge. I studied EE/CS, but all of my professional experience is in software; mostly for the web. I've enjoyed hobby electronics from childhood though, so think I'd enjoy working in and have something to offer a hardware startup too. I'd be keen to develop leadership skills and experience beyond mentoring junior colleagues, technical as well as personal. -- Sorry, I'm not interested in: on-site (including 'hybrid') roles; crypto/blockchain (except perhaps a compelling use of 'smart contracts', but honestly, I gather people keen to work on such things are two-a-penny, and I've no experience in the area).