Who, by running challenger tech brand OnePlus, knows exactly what it's like to have to constantly iterate, innovate and make every marketing penny work hard in an ultra-competitive market. So we asked Celina, whose career has taken her to Motorola, Nokia, Huawei and Asos before joining OnePlus in 2019, about the real challenges marketers face in such a fast-paced environment. She also shared shrewd advice on working for challenger brands, on the complexities of bringing work to life and creating award-winning campaigns on a budget.