Your resume must also demonstrate at least one year of specialized experience at or equivalent to the GS-13 grade level or pay band DP-03 in the Federal service or equivalent experience in the private or public sector. Specialized experience must demonstrate the following: Applying modern Systems Engineering and Systems-of-Systems Engineering principles, processes and methodologies for an Assured Positioning, Navigating, and Timing (PNT) capability; Developing and implementing effective engineering-driven mitigation strategies. Additional qualification information can be found from the following Office of Personnel Management website: https://www.opm.gov/policy-data-oversight/classification-qualifications/general-schedule-qualification-standards/0800/files/all-professional-engineering-positions-0800.pdf or https://www.opm.gov/policy-data-oversight/classification-qualifications/general-schedule-qualification-standards/1500/computer-science-series-1550/ 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.