Gleam is a newer functional language on Erlang's BEAM VM, combining type safety with Erlang's legendary uptime (nine 9's). Compiles to Erlang, leverages OTP supervision trees for fault tolerance. Web framework: Lustre (frontend) + custom backends. Niche but growing. Senior Gleam engineers earn $130-190k because the skill is rare and systems are incredibly stable. Mastery: 8-12 weeks.
Gleam is a statically-typed functional language that compiles to Erlang and runs on the BEAM VM. It combines type safety (catch bugs at compile time) with Erlang's legendary concurrency and fault tolerance. Gleam code reads like functional Python but runs with Erlang's robustness (99.9999999% uptime claims). For web backends, Gleam leverages BEAM's lightweight processes and supervisor trees for handling thousands of concurrent connections with graceful error recovery. Web frameworks (Mist, others) provide HTTP handling and routing. Message passing and process supervision replace traditional error handling.
| Region | Junior | Mid | Senior |
|---|---|---|---|
| USA | $90k | $150k | $230k |
| UK | $55k | $92k | $145k |
| EU | $62k | $102k | $160k |
| CANADA | $95k | $155k | $240k |
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