; 5 U.S.C. app.) governing appointments, and any provision of title 5, United States Code, governing appointments and General Schedule classification and pay rates, the Chairman may appoint persons to the positions described in paragraph (2), subject to the limitation described in paragraph (3), without regard to the civil service laws. (2) Positions described The positions referred to in paragraph (1) are— (A) positions with highly specialized scientific, engineering, and technical competencies to address a critical need for the Commission, including— (i) health physicist; (ii) reactor operations engineer; (iii) human factors analyst or engineer; (iv) risk and reliability analyst or engineer; (v) licensing project manager; (vi) reactor engineer for severe accidents; (vii) geotechnical engineer; (viii) structural engineer; (ix) reactor systems engineer; (x) reactor engineer; (xi) radiation scientist; and (xii) electronics engineer; or (B) positions to be filled by exceptionally well-qualified individuals that the Commission determines are necessary to fulfill the mission of the Commission. (3) Limitation The Chairman may appoint persons to not more than— (A) 90 positions described in paragraph (2)(A); and (B) 90 positions described in paragraph (2)(B). (4) Hiring bonus The Commission may pay any employee appointed under paragraph (1) a 1-time hiring bonus in an amount not to exceed the least of— (A) $25,000; (B) the amount equal to 15 percent of the annual rate of basic pay of the employee