Kacper Geisheimer
Founder, Full-stack Web Developer, Business Analyst at Karer Media
Lower Silesian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolKacper Geisheimer is a founder and full‑stack web developer with nine years of experience building high‑traffic platforms and leading multidisciplinary remote teams from his base in Lower Silesia, Poland. He combines hands‑on Node.js and React development with product and business analysis, personally owning the most demanding projects at Karer Media that he started at 17 and grew into a 10+ person agency. His background spans backend systems, mobile apps and game-related platforms—projects that scaled to tens of thousands of users and handled spikes of thousands of concurrent connections. He has a proven track record of rapid delivery (a four‑week app launch with 15k first‑month downloads) and deep systems work dating back to low‑level C++/ASM reverse engineering and optimized game scripting. With engineering studies and a branding/PR licentiate, he blends technical depth, product instinct and communications acumen to ship reliable, user‑facing systems.
9 years of coding experience
8 years of employment as a software developer
Licentiate degree Branding marketing PR, Licentiate degree Branding marketing PR at Uniwersytet SWPSEngineer's degree Inżynieria zarządzania / IT Management, Engineer's degree Inżynieria zarządzania / IT Management at Wrocław University of Science and Technology
Polish, English, German, Spanish
Stackoverflow
61reputation
5kreached
0answers
1question
Github Skills (116)
cart10
streaming10
checkout10
obs10
audio10
visibility10
ffmpeg10
lazy-loading10
intersection-observer10
oms10
viewport10
obs-studio10
commerce10
broadcast10
broadcasting9
Programming languages (7)
Github contributions (5)
karer/node-wax-expresstrade
Jul 2018 - Aug 2019
Powerful async/await based Node API for WAX Expresstrade.
Contributions:1 release, 40 commits, 3 PRs in 1 year 1 month
apiasync-awaitwaxnode-jsjavascript
karer/node-wirecard-payment-page
Jun 2019 - Aug 2019
A TS library for making payments through the Wirecard Payment Page gateway.
Contributions:11 PRs, 21 pushes, 10 branches in 1 month
paymentspayment-pagewirecardgatewaypaypal
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