This is an interdisciplinary position and may be filled by a Mechanical Engineer (0830-series), an Electrical Engineer (0850-series), or an Electronics Engineer (0855-series), depending upon the qualifications of the candidate. Applicants in positions with occupational series other than those listed (0830, 0850 and 0855) may apply; however, you must apply directly to the series listed in this vacancy that is most applicable to your qualifications. TO QUALIFY FOR ND-5: Your resume must demonstrate at least one year of specialized experience at or equivalent to the ND-4 pay band (GS-12 and GS-13 equivalency) in the Federal service or equivalent experience in the private or public sector. Specialized experience must demonstrate the following: As a professional engineer leading the execution or direction of projects, systems development efforts, research or technology for submarine and surface ship tactical sensor development having system engineering requirements. TO QUALIFY FOR ND-4: Your resume must demonstrate at least one year of specialized experience at or equivalent to the ND-3 pay band (GS-9 through GS-11 equivalency) in the Federal service or equivalent experience in the private or public sector. Specialized experience must demonstrate the following: As a professional engineer leading projects and teams for submarine and surface ship tactical sensor development having system engineering requirements. Additional qualification information can be found from the following Office of Personnel Management websites: https://www.opm.gov/policy-data-oversight/classification-qualifications/general-schedule-qualification-standards/#url=List-by-Occupational-Series AND https://www.opm.gov/policy-data-oversight/classification-qualifications/general-schedule-qualification-standards/0800/files/all-professional-engineering-positions-0800.pdf Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., professional, philanthropic, religious, spiritual, community, student, social). Volunteer work helps build critical competencies, knowledge, and skills and can provide valuable training and experience that translates directly to paid employment.