John is a highly experienced LC-MS/MS, LC_ QTOF_MS GC-MS and ICP-MS/OES Chemist/Scientist with more than 20 years in high throughput bioanalytical analysis. Highly motivated, passionate, result-oriented senior mass spectrometry analytical Chemist with extensive demonstrable hardware troubleshooting skills coupled with a proven history of successfully developing and validating many analytical methods according to FDA, EMA and EPA guidelines. Works both independently and collaboratively to meet aggressive timelines in an interdisciplinary environment.