Jarkko Hietaniemi
Software Engineer at Bittialasin Oy
Helsinki Metropolitan Area Finland
Summary
👤
Senior🎓
Top SchoolJarkko Hietaniemi is a senior software engineer and architect with 30 years of experience building system-level software, language tools, and portable cross-platform solutions. He is the creator of CPAN and a long-time Perl5 contributor who led the Perl 5.8 release, combining deep open-source stewardship with commercial engineering at companies including Google, Fastly, and currently Apple. His expertise spans system programming, OS internals, internationalization, and source-code tooling, with a track record of shipping embedded and infrastructure software used by millions (notably software running on the London Central Line). Jarkko blends research-era rigor from Nokia Research and Helsinki University of Technology with entrepreneurial practice as founder of Bittialasin Oy. He is particularly skilled at getting complex code to run on non-mainstream platforms, a discipline that improves robustness across ecosystems. Based in Helsinki, he continues to influence both proprietary and open-source stacks through architecture and hands-on implementation.
31 years of coding experience
30 years of employment as a software developer
MSc, Computer Science, MSc, Computer Science at Teknillinen korkeakoulu-Tekniska högskolan
Github Skills (73)
programming-language10
perl10
cpan10
scalar9
dynamic-languages9
hashtable9
perl-module9
binary-serialization9
user-input8
deserialization8
tcp8
virtual-machine8
schemaless8
webserver7
udp7
Programming languages (8)
Github contributions (5)
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.