Senior Systems Administrator

Senior Systems Administrator

• Linthicum, MD
• Reflexive Concepts is seeking a skilled Senior Systems Administrator to join our team!

In this role, you will be a collaborative member of a small and mostly autonomous team directly supporting secure enclave development networks.

In this role you will:

• Conduct functional and connectivity testing to ensure continuing operability.
• Develop and document systems administration standard operating procedures.
• Maintain baseline system security according to organizational policies.
• Manage accounts, network rights, and access to systems and equipment.
• Plan, execute, and verify data redundancy and system recovery procedures.
• Install, update, and troubleshoot systems and servers.
• Comply with organization systems administration standard operating procedures.
• Implement and enforce local network usage policies and procedures.
• Manage system and server resources including performance, capacity, availability, serviceability, and recoverability.
• Monitor and maintain system and server configurations.
• Perform repairs on faulty system and server hardware.
• Troubleshoot hardware/software interface and interoperability problems.

Required Qualifications:

• Education and experience (one of the following):
• Bachelor's degree in a technical discipline + 15 years' experience as a System Administrator
• High school diploma + 20 years' experience as a System Administrator
• Experience with Windows Server Administration, Active Directory, and Group Policy
• Familiarity with Linux Server Administration
• VMware/ESXi
• VMware vCenter
• Networking Switching and Router Management
• VMware Virtual Networking
• Storage Management (NetApp)
• Hardware and Operating System troubleshooting
• System hardening
• Security Compliance Scanning (Nessus, ACAS)
• Understanding of project design within the scope of security (RMF) requirements
• Active TS/SCI security clearance with current Full-Scope Polygraph
• Active DoD IAT Level II certification (e.g., CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP)
• Ability to demonstrate cyber/IT related experience with attention to detail, customer service, oral and written communication, and problem solving