Calvin Walzel
Senior Software Engineer at beehiiv
Damwâld, Frisia, Netherlands
Summary
👤
Senior🎓
Top SchoolCalvin Walzel is a Senior Software Engineer with 11 years of hands-on experience building full-stack products across Ruby on Rails, ASP.NET, React, Kotlin and React Native. Currently at beehiiv after helping Shopify’s Point of Sale team ship cross-platform features around authentication, staff management and tax reporting, he blends backend reliability with polished client-side work on mobile and proprietary hardware. He’s experienced in migrating language stacks (C# to Ruby), owning integrations such as Zapier for production customers, and improving observability for complex retail systems. Based in Damwâld, Frisia, he pairs pragmatic engineering with close collaboration — often acting as the support team’s technical contact and a bridge between product and engineering. Notably, his background spans both embedded .NET microcontroller projects and large-scale SaaS feature delivery, reflecting a comfort with systems from low-level devices to cloud services.
11 years of coding experience
11 years of employment as a software developer
IT assistant for system integration, Network and System Administration/Administrator, IT assistant for system integration, Network and System Administration/Administrator at Berufskolleg Rheine des Kreises Steinfurt
German, English, Dutch
Github Skills (122)
python10
webapp10
kubernetes10
react-hooks10
formik10
forms10
higher-order-component10
presenter9
compiler9
v-model9
react-native9
react9
movie8
artisan8
plex8
Programming languages (10)
Github contributions (5)
CalvinWalzel/awesome-svelte
Apr 2019 - Apr 2020
🎉 A curated list of awesome things related to Svelte
Contributions:29 commits, 15 PRs, 28 pushes in 1 year
sveltesveltejssveltekit
CalvinWalzel/ruby-companies
Mar 2023 - Sep 2024
A list of companies that develop software with Ruby
Contributions:48 reviews, 31 PRs, 101 pushes in 1 year 6 months
companies-listrailsruby
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