Rafael E. Santos is a Founder at Testaify, Inc.. They is proficient in Spanish. Colleagues describe them as "Rafael was my hiring manager when I joined Ultimate Software in 2008 and I have had the pleasure of working for him in two different roles at Ultimate over the past 5 years. He has been pivotal to the success of user experience at the company, an innovator willing to make the tough decisions necessary to move products forward. He is an empowering person to work for. I hope to have the opportunity to work with him again." and "I've known Rafael for 3+ years. I've always been impressed with his knowledge and expertise as a software development manager and leader of technology development teams. Rafael has been an active member and supporter of the Kanban since 2008. Recently, Rafael attended my Kanban Leadership & Coaching Workshop. This intensive 3-day workshop is designed to prepare managers, consultants and change agents to implement and lead a process improvement change initiative using the Kanban Method. Kanban is an evolutionary, incremental approach to process improvement and change that is designed to minimize resistance. During the workshop Rafael learned: the systems thinking approach to introducing Kanban; my psychological and sociological model for identifying, predicting and classifying resistance to change; advanced kanban system design techniques including advanced classes of service; metrics used with Kanban; management techniques and feedback mechanisms such as operations reviews and option theory. Having completed the workshop and having seen his work at Ultimate and his experienced gained with Kanban, I believe Rafael is a leading proponent of the method. I heartily recommend him."