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Derwin Tromp

Full-Stack Engineer

// oranjestad, aw · UTC-4

Building in the open from Aruba. Full-Stack Engineer.

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profile sourced from GitHub

Scouting report

Go concurrency author — shipped gatekeeper locking library

assessed from open-source footprint

Staff
58signal

Derwin's standout is gatekeeper (16★, his top repo), a Go package for advanced concurrency control with selective unlocking, priority waiting, and timeouts — a non-trivial systems problem he wrote solo. An 11-year account with a real backend/Go lean, though recent output is light (19 commits last year) and nearly half his repos are abandoned. Best fit for a Go backend team that values low-level concurrency thinking over a flashy portfolio.

Authorship & open source

Solo authorwrote 100% of commits on gatekeeper
4 merged PRs19 commits / yr

What they build

Backend53%
Frontend21%
Data / ML13%
DevOps10%

Industry experience

  • Developer Tools
  • Education & EdTech

Signal breakdown

Originality69
Impact61
Consistency77
Polish13
Stars

16

top repo 16

Original repos

9

23% forks

Followers

3

On GitHub

11.4 yr

Live demos

0

Activity

Active

44% stale

Strengths

  • Verified author — wrote 100% of commits on gatekeeper
  • Original builder — 9 of their own repositories
  • Backend focus with Frontend
  • Domain experience in Developer Tools & Education & EdTech
  • Core stack: Go, TypeScript, Jupyter, Java