Constantin Graf
Freelance Software Developer at European Alternatives
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolConstantin Graf is a Vienna-based freelance software developer with nine years of experience building products for startups and NGOs. Since 2017 he has run his own freelance practice while founding European Alternatives, blending hands-on engineering with organizational and founder responsibilities. His background includes co-founding a proptech startup (ownless) and developing healthcare software at 4myHealth, giving him practical experience across consumer, enterprise and regulated domains. Educated in computer science and economics at TU Wien and Vienna University of Economics, he pairs technical depth with business sensibility. Comfortable moving between full-stack delivery and product-level decisions, he brings an entrepreneurial mindset to every engagement. He often combines technical work with civic-minded projects, reflecting a preference for impact-driven software.
9 years of coding experience
3 years of employment as a software developer
Economics, Economics at Vienna University of Economics and BusinessInformation Technology, Information Technology at HTL RennwegComputer Science, Computer Science at TU Wienaws First, aws First at austria wirtschaftsservice
German, English
Stackoverflow
173reputation
34kreached
2answers
2questions
Github Skills (200)
keycloak-rest-api10
time-tracking10
phpdoc10
openid-connect10
querying10
keycloak10
laravel-package10
php10
oauth10
code-analysis10
docker-compose10
authorization10
phpstan10
horizon10
identity-management10
Programming languages (13)
Github contributions (5)
solidtime-io/solidtime
Apr 2024 - Apr 2025
Modern open-source time-tracking app
Contributions:8 releases, 6 reviews, 145 PRs in 11 months
laraveltime-trackingtimetrackertimetrackingtimetrackingapp
korridor/cakephp-2-ide-helper
Oct 2018 - Feb 2022
Contributions:1 release, 2 pushes, 3 branches in 3 years 3 months
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