Perry Ismangil
Co-Founder Director at Teluu
Sheffield, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolPerry Ismangil is a hands-on software architect and toolsmith with over 17 years of experience and a two-decade passion for free and open source software, currently co-founding and directing Teluu to steward the widely used PJSIP open-source SIP library. He combines deep low-level systems and tooling expertise—evidenced by build and compatibility work on the pjsip/pjproject repository—with product-minded leadership that balances developer ergonomics and business needs. Perry has a track record of launching infrastructure and development frameworks across startups, academia, and enterprise, including one of Indonesia’s first open source companies and a European-funded digital TV project. Based in Sheffield, he brings uncommon comfort bridging technical detail and commercial strategy while nurturing environments that both engineers and managers enjoy working in.
17 years of coding experience
13 years of employment as a software developer
ST Informatics, ST Informatics at Institut Teknologi BandungMSc Telematics, MSc Telematics at The University of Sheffield
English, Indonesian
Stackoverflow
422reputation
12kreached
4answers
4questions
Github Skills (21)
build-system10
c1110
makefile10
c1710
build-tools10
sip9
voip9
sips9
rtp8
ffmpeg8
debugging7
debug7
android-ndk6
backgrounds6
google-cloud-build6
Programming languages (10)
Github contributions (5)
pjsip/pjproject
Jan 2010 - Feb 2020
PJSIP project
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 releases, 5 reviews, 10 commits in 10 years 3 months
Contributions summary:Perry's commits primarily involve modifying and updating the PJSIP project's source code. They focused on build configuration adjustments for Visual Studio, including adding debug and release build modes for both static and dynamic linking. Furthermore, the user made changes related to version updates and documentation, and addressed issues related to FFmpeg compatibility and test suite configuration.
rtpandroidsipvoipios
ismangil/LinkFormatter
Nov 2015 - Feb 2020
Link Formatter is an Android app to pre-format links before sharing.
Contributions:2 releases, 5 PRs, 10 pushes in 4 years 4 months
format-linkssharingandroidandroid-appkotlin
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