John Vergis is a Manager - Payment Solutions at Effision Australia. He possess expertise in software development, emv, software project management, project management, testing and 19 more skills. He is proficient in Greek. Colleagues describe him as "John has worked for me maintaining the system firmware and managing thier releases. He's a very fast learner and showed in depth understanding of the system by then managing the whole system himself. I highly recommend John anytime."