My greatest joy and fulfillment comes from enabling software developers to deliver great quality products faster than they could before.
Developers are expected to be experts in a lot of things: languages, frameworks, libraries, architectures, design patterns, security, reliability, scalability, and all the other non-functional requirements. I can fill the gaps in developer's knowledge and experience, so they can focus on being experts in their domain, language, frameworks, and libraries.
I've almost exclusively worked in an environment where I am the most senior technologist. I'm comfortable having nobody to go to for help or answers, and I'm able to figure out problems through research or reading the code. This has given me a large breadth of experience as well as some unusual pockets of depth.