> Markdown version of [/@alexander-opalic](https://www.wearedevelopers.com/@alexander-opalic). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Alexander Opalic Full-stack developer at Otto Payments focused on local-first web apps. ## About Alexander Opalic builds full-stack software at Otto Payments. Based in Germany, he focuses on creating applications that work offline by default, putting users back in control of their data. He writes regularly about Vue, TypeScript, and AI engineering. In his talks, he breaks down the architecture behind local-first web development, showing teams how to handle conflict resolution and drop loading spinners entirely using tools like Dexie.js and IndexedDB. ## Past Sessions ### World Congress 2026 Europe · July 8, 2026 Berlin, Germany - [What is Local-first Web Development?](https://www.wearedevelopers.com/videos/100187-what-is-local-first-web-development) · 30 min · 🎥 Watch recording ## Videos - [What is Local-first Web Development?](https://www.wearedevelopers.com/videos/100187-what-is-local-first-web-development) · Alexander Opalic ## Links - [X](https://x.com/alexanderopalic) - [LinkedIn](https://www.linkedin.com/in/alexander-opalic-55464a169)