Mikko Koppanen

London, England, United Kingdom

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Summary

🤩

Rockstar

Mikko Koppanen is a seasoned backend engineer based in London with 16 years of experience building infrastructure tools, platforms, and mobile/embedded systems. He enjoys mentoring and focuses on robust, cross-platform C/C++ and native extensions, demonstrated by substantial contributions to ZeroMQ core and high-level bindings that improved build systems, portability and zero-copy message handling. His open-source work spans widely used projects like ZeroMQ and Imagick, plus PHP extensions for barcodes and memcached, showing a knack for low-level debugging, build-tooling and memory-safety fixes. Colleagues know him for pragmatic refactors that reduce platform-specific breakage and for introducing non-blocking and formatted I/O features that make libraries easier to use. He combines deep systems expertise with a preference for developer-friendly APIs and maintainable build infrastructure.

16 years of coding experience

English, Finnish, Swedish, German

Stackoverflow

Stats

388reputation

15kreached

5answers

0questions

Github Skills (42)

socket-io10

debug10

c-language10

zeromq10

messaging10

multiplatform10

back-end-development10

autoconf10

build-system10

mq10

cross-platform10

c1110

networking10

message-system10

libmemcached10

Programming languages (17)

C#JavaC++CScalaGoHTMLReason

Github contributions (5)

zeromq/php-zmq

Jan 2012 - Apr 2019

ZeroMQ for PHP

Role in this project:

Back-end Developer

Contributions:186 commits, 6 PRs, 41 pushes in 7 years 3 months

Contributions summary:Mikko primarily focused on improving and fixing examples within the php-zmq repository. They addressed issues related to the behavior of the ZMQ sockets, providing fixes and improvements to ensure correct functionality. Furthermore, the user corrected code and updated examples, particularly concerning client and server non-blocking operations. The user also addressed a few bugs related to socket behavior and memory management with context and socket objects.

phpzeromqprooph

mkoppanen/php-zbarcode

Jan 2013 - Nov 2021

PHP extension for reading barcodes. Uses ImageMagick(http://www.imagemagick.org/) for image support and zbar(http://zbar.sourceforge.net/) for scanning the barcodes.

Role in this project:

Back-end Developer

Contributions:20 commits, 2 PRs, 9 pushes in 8 years 11 months

Contributions summary:Mikko primarily contributed to the PHP extension for reading barcodes. Their work involved fixing bugs, such as those related to build issues and image processing. They also implemented open basedir checks and improved error messages related to image failures. Furthermore, the user refactored and cleaned up the code, while also adding support for Travis CI.

barcodespdf417sourceforgezbarbarcode-scanner

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