"I have worked with Rolf on a number of projects, for various customers of oeworks. Rolf wrote code for data aggregation, post-processing, and tabulation. He used .NET, combined with Excel, to summarize data and extracted parameters in Excel workbooks.
In addition to producing code in-spec and on-time, Rolf has always been very proactive in identifying bottlenecks, and setting customers' expectations about performance and execution time.
Finally, I have found Rolf to be very personable, attentive to customers' requirements, and willing to go above and beyond to ensure customers are satisfied with the professional interaction, as well as the end product."