Scaler, a leading ed-tech start-up for upskilling students and working professionals, announced five key leadership appointments towards further strengthening its Strategic, Marketing and Creative business units to accelerate business growth. Rahul Karthikeyan joins as the Chief Marketing Officer, Arnav Gupta as Product and Strategy Lead, Anu Nair as Creative Head, Ranjeet Kumar, and Manmeet Singh Akali as…