# Devashish Yadav — Portfolio > SDE-3 at Leena AI & DTU alumnus. Architecting scalable full-stack & agentic AI systems for 120K+ daily users — Next.js, React Native, SwiftUI, event-driven architecture. Devashish Yadav builds fault-tolerant systems for real-world impact. This site showcases experience, projects, writing, photography, and contact. Prefer the relevant section link; each page offers a markdown version via `.md` (e.g., `/about.md`) where available. ## About - [About](https://www.devashish.cc/about): Experience at Leena AI (SDE-3) & Pocketpills (SDE-2), DTU B.Tech, skills and education ## Work - [Work](https://www.devashish.cc/work): Portfolio — Air Control, Nuvelle & full-stack projects - [Air Control](https://www.devashish.cc/air-control): iPhone/iPad trackpad & air pointer for Mac (SwiftUI, local Wi-Fi, mutual-TLS) ## Writing - [Blog](https://www.devashish.cc/blog): Technical articles — fault-tolerant SSR/CSR, NGINX, performance - [Building Fault-Tolerant Web Applications](https://medium.com/@devashishyadav2531/building-fault-tolerant-web-applications-a-hybrid-ssr-csr-architecture-02b682f493f8): Hybrid SSR/CSR architecture — eliminating single points of failure ## Gallery - [Gallery](https://www.devashish.cc/gallery): Travel & landscape photography — Himalayas, Andaman ## Contact - [Contact](https://www.devashish.cc/contact): mail@devashish.cc — Gurugram, collaboration & engineering discussions ## Sitemap - [Sitemap](https://www.devashish.cc/sitemap.xml): Complete URL list for crawling - [Robots](https://www.devashish.cc/robots.txt): Crawl rules ## Optional - [GitHub](https://github.com/devashish2531): Code, open-source projects - [LinkedIn](https://www.linkedin.com/in/devashish2531/): Professional profile - [X / Twitter](https://x.com/devashish2531): Thoughts & updates - [Medium](https://medium.com/@devashishyadav2531): Technical writing - [Leena AI](https://www.leena.ai): Current employer — AI Colleagues platform