# Thilak Rao > Thilak Rao is a software engineer in Amsterdam, co-founder of Numen (Private LLM, Slop or Not, Clean Links) and a staff engineer at Booking.com. Thilak Rao is the co-founder of [Numen](https://numen.ie), an on-device AI company started in 2023. Numen builds apps that run entirely on iPhone, iPad and Mac, with no account and no tracking. Its products include [Private LLM](https://privatellm.ai), one of the first on-device AI apps on the App Store; [Slop or Not](https://slopornot.ai), which detects AI-generated text and images; and [Clean Links](https://cleanlinks.app), which strips tracking from shared links. Thilak is also a staff engineer at Booking.com, where he has worked since 2017. Previously, he was an early engineer at VaycayHero, a Y Combinator-backed startup acquired by RedAwning, and the first frontend hire at Finovera, a fintech company acquired by Paymentus. He has written software professionally since 2009. ## Elsewhere - - - -