Selective Placement Factor: In addition to the minimum qualifications described above, you must meet the following requirement(s) to be considered qualified for the position: Direct, hands-on experience performing production-level Linux administration and engineering duties (not including application support, oversight-only, training, or certifications alone), where you independently managed, troubleshot, and maintained complex Linux environments in a business or operational setting and executed independent judgment, immediate operational contribution, and direct coordination with assigned customers and technical stakeholders. Customer Service - Works with clients and customers (that is, any individuals who use or receive the services or products that your work unit produces, including the general public, individuals who work in the agency, other agencies, or organizations outside the Government) to assess their needs, provide information or assistance, resolve their problems, or satisfy their expectations; knows about available products and services; is committed to providing quality products and services.