# Neciu Dan > Personal site of Neciu Dan — Staff Engineer, host of the Señors @ Scale podcast, ReactJS Barcelona organizer, and international speaker. Covers frontend engineering, testing, security, performance, and engineering career topics. ## About - [About Neciu Dan](https://neciudan.dev/about): Background, talks, and what he works on - [Newsletter](https://neciudan.dev/#subscribe): Subscribe for new posts and podcast episodes ## Blog - [Blog index](https://neciudan.dev/blog): JavaScript, React, testing, security, and engineering career articles - [RSS feed](https://neciudan.dev/rss.xml): Full-content RSS ## Podcast — Señors @ Scale - [Podcast hub](https://neciudan.dev/senors-at-scale): Conversations with senior engineers about scale, performance, and the realities of large frontend systems - [Episode takeaways](https://neciudan.dev/takeaways): Per-episode key takeaways in markdown - Listen on [Spotify](https://open.spotify.com/show/7FVT93UTOhafvQeZGKmV60), [Apple Podcasts](https://podcasts.apple.com/us/podcast/se%C3%B1ors-at-scale/id1827500070), and [YouTube](https://www.youtube.com/@NeciuDan/) ## Course - [Master Security](https://neciudan.dev/master-security): Free email course on frontend security (XSS, CSRF, exploits) ## Workshops - [From Lizard to Wizard](https://neciudan.dev/lizard-to-wizard): 4-hour remote frontend system design intensive — chat app architecture, microfrontends, BFF/SDUI, event-driven architecture, observability. Next session: Thursday May 28, 2026. - [Sign up — From Lizard to Wizard](https://neciudan.dev/lizard-to-wizard/signup): Direct signup link with seat reservation ## Optional - [llms-full.txt](https://neciudan.dev/llms-full.txt): Concatenated full content of blog posts and podcast takeaways for retrieval - [Sitemap](https://neciudan.dev/sitemap-index.xml): Full site URL index