Johan Vromans
Owner at Squirrel Consultancy
Groningen, Groningen, Netherlands
Summary
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SeniorJohan Vromans is a seasoned software engineer and founder with over 30 years of experience researching software engineering techniques and building practical developer tools. As owner of Squirrel Consultancy since 1995 and an ongoing author for O'Reilly, he specializes in Open Source and Open Standards advocacy, with deep expertise in Perl where he is internationally recognized. He helps organizations adopt strategic innovations by combining hands-on tool development with tailored training so teams can actually use new practices. Johan’s work blends research-led methodology with pragmatic consultancy, often translating language and tooling evolution into operational improvements. Based in Groningen, Netherlands, he brings a rare combination of academic curiosity and decades-long, real-world delivery across diverse clients and projects.
31 years of coding experience
Github Skills (200)
perl10
home-automation10
evernote10
fonts10
synchronization10
gui-builder10
nodejs10
filesystem10
reference-implementation10
thermostat10
squeezebox10
unicode10
command-line10
perl-module10
typography10
Programming languages (20)
Github contributions (5)
sciurius/perl-HarfBuzz-Shaper
Jan 2020 - Jan 2026
Perl extension to use HarfBuzz for text shaping
Contributions:11 releases, 1 PR, 67 pushes in 6 years 1 month
harfbuzzperl-extensionhyphenationphoneticstext-shaping
sciurius/perl-Getopt-Long
Dec 1995 - Nov 2022
Module Getopt::Long - extended processing of command line options
Contributions:2 releases, 1 review, 346 commits in 27 years 3 months
command-line
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