Kalle Nielsen
Senior Software Engineer at Tuxxedo Software Development
Helsinki, Mainland Finland
Summary
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RockstarKalle Nielsen is a Senior Software Engineer with 18 years of experience specializing in PHP development, Windows portability, and release management for the PHP language. As a long-time PHP Core Developer and Release Manager for PHP 7, he combines deep language-level expertise with practical experience maintaining php.net back-end infrastructure and security-related site files. He has founded and led engineering teams through startups and scale-ups, holding technical lead and staff engineer roles across Nordic companies while currently working at EWQ. An active open-source contributor, Kalle's work spans core extensions (like APC), documentation translation, and improvements to widely used PHP ecosystem projects. Based in Helsinki, he brings a rare blend of low-level systems knowledge, Windows-focused PHP build expertise, and hands-on product engineering.
18 years of coding experience
15 years of employment as a software developer
English, Danish, Norwegian, Swedish
Stackoverflow
383reputation
14kreached
12answers
0questions
Github Skills (11)
php10
website-development10
security9
git7
gps6
constants6
metadata6
php-internals6
exif6
apache6
python6
Programming languages (11)
Github contributions (5)
php/web-php
Feb 2013 - Sep 2019
The www.php.net site
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 commits, 3 comments in 6 years 7 months
Contributions summary:Kalle primarily contributed to the back-end functionality and content management of the PHP.net website. They made changes to the `languages.inc` and `gpg-keys.inc` files, indicating involvement with language support and security configurations. Additionally, the user updated the website's code and fixed bugs, as well as adding features and making improvements to the website.
phpphp7
KalleZ/pecl-exifkit
Jul 2017 - Nov 2018
Contributions:11 commits, 10 pushes, 1 branch in 1 year 4 months
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