Systems Engineer Level 3: Bachelor's degree in STEM (engineering, computer science, physics, math, or related field) with 5+ years of relevant experience in systems engineering for aerospace, defense, or space programs, or Master's degree in STEM with 3+ years of relevant experience, or PhD with 1 year of relevant experience. Basic Qualifications for Systems Engineer - Level 2 / Level 3: Systems Engineer Level 2: Bachelor's degree in STEM (engineering, computer science, physics, math, or related field) with 2+ years of relevant experience in systems engineering for aerospace, defense, or space programs, or Master's degree in STEM.