Qualification requirements in the vacancy announcements are based on the U.S. Office of Personnel Management (OPM) Qualification Standards Handbook, which contains federal qualification standards. This handbook is available on the Office of Personnel Management’s website located at: https://www.opm.gov/policy. SPECIALIZED EXPERIENCE: Applicants must possess one year of specialized experience equivalent in difficulty and responsibility to the next lower grade level in the Federal Service. Specialized experience is experience that has equipped the applicant with the particular competencies/knowledge, skills and abilities to successfully perform the duties of the position. This experience need not have been in the federal government. To qualify for the 1550 series: Basic Requirements: This position requires applicants to meet a Basic Education Requirement in addition to at least one year of specialized experience in order to be found minimally qualified. You MUST meet one of the following basic education requirements: Degree: Bachelor’s degree in computer science or bachelor’s degree with 30 semester hours in a combination of mathematics, statistics, and computer science. At least 15 of the 30 semester hours must have included any combination of statistics and mathematics that included differential and integral calculus. AND To qualify at the GS-12: In addition to meeting the Basic Requirements above, applicant must also possess one full year (52 weeks) of specialized experience equivalent to the GS-11 in the Federal service. Specialized experience MUST include all of the following: Performing software maintenance and development; and Assisting in software design and architecture. To qualify at the GS-13: In addition to meeting the Basic Requirements above, applicant must also possess one full year (52 weeks) of specialized experience equivalent to the GS-12 in the Federal service. Specialized experience MUST include all of the following: Refining software products for high performance computing systems; Coordinating software design and architecture modifications; and Assisting in software development projects. Experience refers to paid and unpaid experience, including volunteer work done through National Service programs (e.g., Peace Corps, AmeriCorps) and other organizations 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. You will receive credit for all qualifying experience, including volunteer experience.