Professionally...
I mainly work as a full-stack web developer by definition. Am most comfortable working with Python (Flask), Typescript, built on top of PostgreSQL. In that regard, my experience is varied as I've worked with a variety of systems: from institutional systems with thousands of users, to logistics systems with hundreds of billions of entries.
Currently, I work at Apkudo, where we work on applications to support the circular device economy.
Academically, I worked with networks and distributed systems, and continue to professionally do so. I'm also fond of maintaining / reviving needed legacy systems for clients.