BASIC REQUIREMENTS: Degree: physics; or related degree that included at least 24 semester hours in physics; OR Combination of education and experience -- courses equivalent to a major in physics totaling at least 24 semester hours, plus appropriate experience or additional education. In either 1 or 2 above, the courses must have included a fundamental course in general physics and, in addition, courses in any two of the following: electricity and magnetism, heat, light, mechanics, modern physics, and sound. IN ADDITION TO THE BASIC REQUIREMENTS, you must also meet one of the following requirements: 1. One year of specialized experience equivalent to at least GS-9 (ZP-II at NIST). Specialized experience is defined as: Experience designing advanced wafer-scale silicon architectures for custom quantum probes. Experience creating mesoscale sensors within a multiprobe architecture, for example scanning single-electron transistor sensors, scanning superconducting quantum interference devices, high-kinetic-inductance superconducting resonators, or custom quartz piezoelectric tuning forks for atomic force microscopy. Experience working with dilution refrigerators, including designing wiring for low-noise and RF measurement applications. OR 2. Master's or equivalent graduate degree OR 3. A combination of graduate education and specialized experience. 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. The qualification requirements in this vacancy announcement are based on the U.S. Office of Personnel Management (OPM) Qualification Standards Handbook. If requesting reconsideration of your qualification determination, please refer to the following site: Applicant Reconsideration