I am an advocate of writing maintainable, extensible, readable and simple code. It's a challenge. I am passionate about open source having led 3 open source projects with more than 2500 github stars. Angularspree, Aviacommerce, Gringotts
I recently did a course on smart contracts by Patrick collins. Learned a lot from him and WhiteBoard Crypto. Security is a major concern in this rather new space.
Chainlink is super cool. Stablecoins aren't that stable. Defi is groundbreaking but will take more time and mistakes before going mainstream.