George is an HPC Engineer in the User Assistance & Outreach group. His role is to support the users of the HPC systems. Moreover, he has experience on performance analysis and code optimization, as also he enjoys working with various programming models. He is experienced on benchmarking file systems, including Burst Buffer, tuning the parallel I/O to extract performance and he is one of the developers of the IO-500 benchmark. Prior joining ORNL, he was Computational Scientist at KAUST Supercomputing Laboratory and Senior Engineer at Barcelona Supercomputing Center.