# David Cruz Anaya (davthecoder)

> Senior Mobile & Applied AI Engineer and published author based in London, UK. Freelances on Android, Kotlin Multiplatform, and production AI product features. Udemy instructor (20k+ students), open-source contributor. Author of "You Are Not That Important".

David Cruz Anaya ships senior mobile product engineering (Android modernisation, KMP, embedded delivery, native Rust where it earns its place) and contained applied AI features (tool calling, grounding, guardrails, cost control, evaluation). Applied AI proof includes independent products: Paglipat production concierge, the live site assistant on davthecoder.com, and a contained ElTarot reading feature. Not model training or MLOps as a service.

## Key pages
- [About](https://www.davthecoder.com/about): Background, dual mobile and AI positioning, and how to hire.
- [Services](https://www.davthecoder.com/services): Android, KMP, embedded delivery, Rust, and applied AI product features.
- [Portfolio](https://www.davthecoder.com/portfolio): Case studies across mobile platforms and applied AI.
- [Paglipat case study](https://www.davthecoder.com/portfolio/paglipat): Production tool-calling AI concierge (paglipat.com). Android: https://play.google.com/store/apps/details?id=com.paglipat.paglipat_flutter · iOS: https://apps.apple.com/us/app/paglipat-move-to-se-asia/id6804210426.
- [Tarot Marsella case study](https://www.davthecoder.com/portfolio/tarot-marsella): Flutter tarot app. Android: https://play.google.com/store/apps/details?id=com.davthecoder.tarot_gratuito · iOS: https://apps.apple.com/us/app/tarot-marsella/id6447571823. Web sibling: https://eltarot.es.
- [Site AI assistant case study](https://www.davthecoder.com/portfolio/site-ai-chatbot): Live chat demo architecture and limits.
- [Blog](https://www.davthecoder.com/blog): Articles on Android, KMP, Rust, architecture, career, and AI learning.
- [CV](https://www.davthecoder.com/cv): Full career history and commercial skills.
- [Mentoring](https://www.davthecoder.com/mentoring): One-to-one Android and Kotlin mentoring.
- [Speaking](https://www.davthecoder.com/speaking): Talk topics and event enquiries.
- [Book](https://www.davthecoder.com/book): "You Are Not That Important".
- [Contact](https://www.davthecoder.com/contact): Company hire (including service=ai-features), mentoring, and talks.

## 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
- Email: info@davthecoder.com
- GitHub: https://github.com/davthecodercom
- LinkedIn: https://www.linkedin.com/in/davthecoder/
- YouTube: https://www.youtube.com/@davthecoder
- X/Twitter: https://x.com/davthecoder