Your resume must also demonstrate at least one year of specialized experience at or equivalent to the GS 9-11 grade level or (DP-03) pay band in the Federal service or equivalent experience in the private or public sector. Specialized experience must demonstrate the following: 1) Showing Experience with Microsoft Foundation Class (MFC) and Windows Presentation Foundation (WPF); 2) Showing experience with C++, C# and/or Java development; and 3) Utilizing experience with Agile Software Development. Additional qualification information can be found from the following Office of Personnel Management website: 08XX Series: Electrical Engineering Series 0850 (opm.gov) 1550 Series: Computer Science Series 1550 (opm.gov) 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.