This requisition may be filled at a higher grade based on qualifications listed below: Basic Qualifications Principal Reliability Safety Systems Engineer Level 3: Bachelor's Degree in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 5 years relevant experience; or Master's Degree in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 3 years of relevant work experience or a PhD in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 0 years relevant experience. Principal Reliability Systems Safety Engineer Level 4: Bachelor's Degree in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 9 years relevant experience; or Master's Degree in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 7 years of relevant work experience; or a PhD in a STEM (Science, Technology, Engineering, Math or Physics) discipline with 4 years relevant experience.