As a Senior Systems Administrator for Linux, you will be part of a team that is tasked with providing IT operations services to our client for a large-scale IT system including: * Knowledge of tracking and analyzing performance and resource utilization of the assigned systems, and shall have experience in recommending changes, upgrades, and enhancements based on the technical analysis * Providing necessary instruction and documentation for change requests, installing operating systems, loading (installing) COTS products, and configuring operating systems and COTS products * Daily duties of backups, maintenance on applications and OS, patching, tuning and troubleshooting * System configuration changes based on requests * Following CM process to effectively manage environment changes * Will be on-call, as required during the year, supporting mission critical supporting systems. (on call rotation) Desired Experience includes: * Redhat Linux 5/6 OS Management and Administration * Satellite Server Management * VMWare and/or virtual server environment administration * LDAP administration * Active Directory Management * Understanding of PKI certification and applying to webservers * Perl and other scripting languages * Virtualization of IT applications * Oracle database familiarity * Certifications in operating systems and other COTS products are desired * Customer oriented TMC Technologies is an equal opportunity employer. All qualified applicants will receive full consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, disability, military and veteran status, marital status, pregnancy, sexual orientation, gender, gender identity, or any other legally protected status. Job Requirements * 7+ years of directly related work experience required * BS in Computer Science, Information Security, or related field; or equivalent preferred * Security Requirements: U.S. Citizenship and an active Top Secret clearance required We are equal opportunity/affirmative action employers, committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity, sexual orientation, national origin, disability, or protected veteran status, or any other protected characteristic under state or local law.