Trying to think from systems perspective. Reading The C Programming Language, and learning the kernel one syscall at a time.
doing some cool stuff on the infrastructure layer.
the go pipeline that turns a repository into a code graph, and the postgres job queue underneath it.
ran a linux backend service pushing high-throughput event streams through a filter and a classifier.
automated a crm's end-to-end suite in cypress; manual regression went from two days to two hours.
read live traffic in tcpdump and wireshark against system logs, and sat in on owasp top ten reviews.