I currently have some availability for an additional freelance client.
I've been doing #ruby since 2004 or so, and #rails since v1.
I'm also reasonably competent in #JS/#TS (more BE than FE), #python, and #go. If FP is your thing, I can do #elixir, #gleam, or #ocaml, though of the three, I only used Elixir (Phoenix) in production.
All that said, almost all of my recent contracts were for Fractional CTO/Engineering Lead roles.
If any of that sounds interesting, HMU.