I'm Sebastian — Full-Stack Engineer, SysAdmin, DevOps, Product Owner and Designer — a Jack-of-All-Trades from Poland.
In IT since 2013, programming since 2015, with Node.js since 2019. Head of Product Engineering at Top Online / YOSA since 2025.
- Developed and launched EmbedBase - a data-vectorization platform with semantic search and chat funcionality
- Developed and launched Agent Monitor - bot-centric traffic and referal analysis platform
- Took over, overhauled and launched YOSA - autonomus SEO and content generation agent
Bootstrap GraphQL Sass Apache2 mongoose npm Lynx HTML Apollo GraphQL Rust CloudFlare Typo3 JavaScript Vitest Node.js Nginx Jest MongoDB React TailwindCSS Docker Express.js MaterialUI Webpack CSS TypeScript PHP Python PostgreSQL MySQL/MariaDB Less Next.js Supabase Axiom Kotlin WordPress Svelte Fastify Vue Ubuntu Redis Stack Sentry Payload Figma