There are broadly two aspects to my last couple of roles: infrastructure development and operational support. My infra development isn't speed-limited, but operational support involves a lot of quick back-of-the-envelope estimates of large datasets and/or one-off automation many invocations of commandline tools.

My infrastructure work is in C++ and Python, whereas I most often reach for jq, awk, tr, sort, uniq, comm, etc. for operational support tasks.