Sytze Zeijlmaker
Senior Software Engineer at B4B Payments - A Banking Circle Group Company
Ross-on-Wye, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolSytze Zeijlmaker is a Senior Software Engineer with six years of experience building scalable, maintainable systems and leading engineering efforts across education and payments platforms. He has a track record of delivering high-impact product changes—most notably redesigning Sumdog’s Fluency Booster to personalise learning at scale, cutting average questions per skill from 132 to 53 while handling ~1.5M daily events and querying multi-billion-row datasets. Comfortable across backend, frontend and operational concerns, he has optimised slow endpoints, reduced app CPU usage through batching and caching, and simplified front-end complexity by unifying navigation between Vue and AngularJS. As Head of Digital Development at the University of Bath he improved publishing performance and automated redirects to protect SEO, and he’s now bringing that blend of hands-on engineering and delivery leadership to B4B Payments. Trained in classical composition, he brings a creative, systems-oriented mindset to complex technical problems and product design.
6 years of coding experience
5 years of employment as a software developer
Bachelor's degree Klassieke compositie, Bachelor's degree Klassieke compositie at Codarts Rotterdam | University of the ArtsN&T/N&G, N&T/N&G at Stedelijk Gymnasium Haarlem
English, Dutch
Github Skills (43)
photo-library7
cordova-plugin6
php6
laravel6
stripe6
stripe-api5
sfc5
api5
plugin5
cordova-android5
javascript4
parallax4
async4
lighthouse4
blocking4
Programming languages (7)
Github contributions (5)
sytzez/muvis
Sep 2019 - Dec 2021
Contributions:81 commits, 47 pushes, 1 branch in 2 years 3 months
sytzez/deeplomacy
Sep 2021 - Nov 2021
Contributions:1 release, 68 pushes, 1 branch in 2 months
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