> Markdown version of [/jobs/ext/3661280-senior-it-system-admin-certified-professional-multiple](https://www.wearedevelopers.com/jobs/ext/3661280-senior-it-system-admin-certified-professional-multiple). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior IT System Admin Certified Professional (Multiple) - **Company:** Bravura Information Technology Systems, Inc. - **Location:** Aberdeen Proving Ground, MD, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, CompTIA Security+, Cyber Security, Linux Servers, Network Architecture, Network Administration, Network Routers, Firewalls (Computer Science), Information Technology, User Administration - **Published:** October 9, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=0a0ece58561af83e ## About the Role Education/Certifications: Current IAT Level II industry certification (e.g., Security+, CCNA, RHCSA, MCSA, etc.) Years of Experience: 5+ years IT support Clearance Level & Investigation: TS/SCI IA Cert Level (DoD 8570.01): IAT Level II, The Senior IT System Admin Certified Professionals require the following minimum qualifications for eligibility: * Experience: + Minimum 5+ years of relevant IT experience in an enterprise environment. * Certifications: + Possess at a minimum current IAT level II, industry-standard certifications relevant to specific duties (e.g., CompTIA Security+, CCNA, RHCSA, MCSA). + Must meet DoD 8570/8140 requirements for assigned role. * Technical Skills: + Proven hands-on skills in network and system administration, troubleshooting, COMSEC, and customer support within a secure environment. * Clearance: + Must possess and maintain a Top Secret/SCI security clearance. + Must be U.S. citizen. ## Description The Senior IT System Admin Certified Professionals are core technical support, responsible for day-today administration, maintenance, and security of JWICS environment. Responsibilities: * System & Network Administration: + Perform daily system administration tasks on Windows and/or Linux servers, including user account management, patching, and applying Security Technical Implementation Guides (STIGs). + Manage and troubleshoot network infrastructure devices (switches, routers, firewalls). * Tier 1/2 User Support: + Provide direct support to end-users for technical issues, including VTC setup and troubleshooting, account resets, and software support. + Escalate complex issues to senior specialists or external vendors as needed. * Security Operations: + Monitor security logs, respond to alerts, and assist with incident response and remediation activities. + Ensure systems are backed up and disaster recovery plans are tested. * Technical Support: + Provide skilled technical support across all performance areas as assigned by Team Lead, adapting to emerging technologies and requirements.