Sebastian Seggewiß is a Lead Developer with eight years of professional software experience, currently leading ECP development at Cornelsen Verlag after senior engineering and leadership roles at Shopware. He combines deep backend expertise—contributing to the flagship Shopware 6 open commerce platform—with practical ownership of rule systems, shipping/payment management, bulk edits, media handling and accessibility improvements. Known for translating product needs into robust core features, he pairs hands-on coding with team leadership and quality-driven testing. Based in Vreden, Germany, he brings a pragmatic, maker mindset—once working as a CNC cutter—that informs his systematic approach to building reliable systems.
Shopware 6 is an open commerce platform based on Symfony Framework and Vue and supported by a worldwide community and more than 1.500 community extensions
Role in this project:
Back-end Developer
Contributions:130 reviews, 400 commits, 85 PRs in 4 years 2 months
Contributions summary:Sebastian contributed to the Shopware 6 open commerce platform. They worked on enhancements in the rule system, shipping and payment method management, and bulk edit functionalities. Their contributions included testing backend functionalities, fixing issues, and improving core features related to product exporting, media handling, and custom field settings. They also addressed several a11y and general quality issues.
An icon library and toolkit that follows a minimal, yet highly expressive style perfectly aligned with Shopware's product language.
Contributions:2 reviews, 33 commits, 26 PRs in 3 months
shopwareexpressiveiconicon-libraryicons
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Sebastian Seggewiß - Lead Developer ECP at Cornelsen Verlag GmbH