Vallo Interim management, personal coaching & consultancy Hank van Dijk has founded Vallo. Hank is a seasoned professional who for the past 25 years has had a career as entrepreneur, executive and consultant. Vallo is the result of those 25 years of experience. Vallo is Hank van Dijk and a solid network of experienced marketing, retail and business consultants and executives. Vallo works for advertising and design agencies and also for mid sized companies who are planning their next step.