At my current company (Aha!). Fully remote which is great for me because I'm a night owl. Interesting and technically challenging work in my favorite stack (Rails/React). We use our own product so I get to see my new code/features in front of me the next day. Great environment to learn about running a seriously profitable and successful startup from the inside. And the engineering culture is right in the sweet spot -- independent and self-directed but with brilliant colleagues available to bounce ideas when I get stuck; committed to quality but pragmatic about reality for a large codebase; forward-thinking and open to new technologies but cautious about balancing value and benefit vs. the inherent risks introduced by change.