Tony Keller is a professional in their field. He is proficient in English. Colleagues describe him as "I worked with Tony Keller on various HR projects. He is very competent, well versed and always delivers high quality. I appreciate that he faces the most difficult challenges and always acts in a friendly, team and solution-oriented manner even in complicated situations. Tony is also innovative and always focuses on the customer. It is always a pleasure to work with Tony."