Research scientist; C/C++ programmer for 35+ years.

Worked at HP Labs for 20 years on topics such as high performance storage systems (e.g. HP AutoRAID, porting the Log-Structure File System to 4.4BSD, tertiary storage management), imaging and printing (e.g. automatic image enhancement, halftoning, JPEG artifact reduction), and internet systems.

Working at Google on large scale systems and batch processing on those large databases (e.g. Gmail backend, Drive backend).