Jonathan Ljungek
Chief Technology Officer at Git & Tonic
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
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (41)
crypto10
discord10
agentic10
wagmi10
telegram10
agent10
slack10
ai10
ethereum10
blockchain10
swarm10
chatbot10
javascript9
typescript9
abi9
Programming languages (4)
Github contributions (5)
daniel-trevino/matos
Feb 2022 - Aug 2022
Matos landing page and ERC1155
Contributions:12 commits, 1 PR, 17 pushes in 6 months
ethereumerc1155matos
Jimjardland/opensweden
Apr 2018 - Apr 2018
Contributions:50 commits, 23 pushes in 3 days
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