Tesco’s Sumit Mitra, who was earlier working at the British retailer’s Bengaluru GCC, has moved to the UK and is leading coaching responsibilities for five countries for the group. Walmart’s chief technology officer for the US, Hari Vasudev, previously held tech roles in India. Tathagat Varma from Walmart India is now a global TechOps leader based in the US for the retailing giant.