Roger has 14 years experience in IT and the telecommunications industry. Having spent 8 years working for a LogicaCMG and 2 years working for a UK mobile operator, Roger joined Cartesian in 2004. His experience of implementing and supporting billing and provisioning systems for mobile, fixed line and satellite operators' in European, North and South American and Pacific Rim markets has provided a strong understanding of operators needs and challenges globally.

On joining Cartesian, as Head of Product Delivery, Roger used his experience to develop Cartesian's system integration processes and procedures to ensure that delivery of the Ascertain product suite to new customers was executed efficiently and high standards of quality and customer satisfaction were maintained. He was instrumental in defining and building Cartesian's Customer Technical Services group, which combines Ascertain support, development and delivery functions to ensure that Ascertain customers receive the highest standard of post-implementation support possible.

As Director of Consultancy, Roger is well placed to capitalise on his depth of experience to take responsibility for the ongoing development and support of the ever-increasing Ascertain customer base, not only managing support activities but steering and leading enhancement and development projects for these customers.