Roger has been the lead for many analysis, design and architecture phases on a number of successful SOA projects, primarily in the telecommunication sector. His achievements are: SOA implementation from the ground up in a domain, conceptual and physical design of the SOA, as well as definition of the high-level (vendor-neutral) and technical (vendor-specific) reference architectures. These reference architectures are used by design and implementation teams to standardize delivery for a reliable work-product.