You must also meet the following requirement(s): TIME AFTER COMPETITIVE APPOINTMENT (TACA): By the closing date (or if this is an open continuous announcement, by the cut-off date) specified in this job announcement, current civilian employees must have completed at least 90 days of federal civilian service since their latest non-temporary appointment from a competitive referral certificate, known as time after competitive appointment. Specialized experience must include: Utilizing IRS functions, programs, policies, regulations, procedures, and operations to evaluate programs plans and determine impact of changes on program goals and cross-functional programs, their interrelationship with assigned program to conduct reviews, studies/projects, and coordinate systems and resource utilization of program operations.