# David Cruz Anaya (davthecoder) > Software Engineer and published author based in London, UK. Senior Android & Kotlin Multiplatform engineer, Udemy instructor (20k+ students), open-source contributor. Author of the book "You Are Not That Important". David Cruz Anaya builds modern web and mobile applications (Android/Kotlin, Jetpack Compose, Flutter, KMP, TypeScript/Astro) and writes about software engineering, app architecture, testing, and the realities of building products and writing books. ## Key pages - [About](https://www.davthecoder.com/about): Background, experience (10+ years), education, skills, and services. - [Blog](https://www.davthecoder.com/blog): Articles on software engineering, Android/KMP, web development, testing, and career mindset. - [Portfolio](https://www.davthecoder.com/portfolio): Selected projects and open-source work. - [Speaking](https://www.davthecoder.com/speaking): Talk topics and conference/event speaking enquiries. - [Book](https://www.davthecoder.com/book): "You Are Not That Important" — the book and its editions. - [Contact](https://www.davthecoder.com/contact): Get in touch for collaborations, talks, or consulting. ## Feeds & resources - [Blog RSS feed](https://www.davthecoder.com/blog/rss.xml): Latest blog posts. - [Sitemap](https://www.davthecoder.com/sitemap-index.xml): All indexable URLs. ## Contact - GitHub: https://github.com/davthecodercom - LinkedIn: https://www.linkedin.com/in/davthecoder/ - YouTube: https://www.youtube.com/@davthecoder - X/Twitter: https://x.com/davthecoder