Bob Callahan possesses expertise in program management, vendor management, strategy, management, telecommunications and 27 more skills. Colleagues describe him as "Bob, Working for you is an honor. Ever since I have started to work under your leadership; I have learned a lot from you. Thank you! It is one thing to be a boss, another thing to be a mentor but a completely different thing to be a leader. We are proud to be led by a boss, mentor and manager like you. Thank you." and "Details of the Recommendation: "Right - how do you describe a guy who has his whole life in Virginia and ends up dedicating himself to running a high tech start up in England - sacrificing his entire life for the sake of 100 employees who hang on his20every word. Bob is in short an outstanding COO-extraordinaire - covering everything from marketing, customer care, development, call centre, IT, and a 24/7 focus that says, "nothing ever drops on my watch," in a start-up… Show more"