Jonathan Ljungek
Chief Technology Officer at Chapter Two
Stockholm, Stockholm County, Sweden
Summary
👤
Senior🎓
Top SchoolJonathan Ljungek is a hands-on technology leader and CTO with 11 years of experience specializing exclusively in JavaScript: React for UIs, Node for backends and React Native for native apps. He thrives on building products from the ground up—choosing tech stacks, shaping architecture, and designing developer and user experiences across startups, telecom, and web3. His background spans launching e-commerce platforms, migrating large sites (Next.js to Gatsby), real-time data-driven dashboards, and DeFi frontends, showing both product intuition and deep implementation skills. As a founder and frequent freelancer based in Stockholm, he bridges strategic leadership with day-to-day coding, often shipping features himself rather than only managing teams. An understated strength is his consistent focus on developer experience and production reliability, evident in migrations, cloud deployments, and cross-platform native-to-web efforts.
11 years of coding experience
9 years of employment as a software developer
Datorprogrammering, Datorprogrammering at NTI
Github Skills (36)
crypto10
discord10
agentic10
telegram10
abi10
agent10
ai10
slack10
blockchain10
swarm10
chatbot10
operating-system10
javascript9
wagmi9
typescript9
Programming languages (4)
Github contributions (5)
jonathangus/gates
Oct 2022 - Nov 2022
Contributions:117 commits, 18 PRs, 35 pushes in 1 month
Jimjardland/opensweden
Apr 2018 - Apr 2018
Contributions:50 commits, 23 pushes in 3 days
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