Senior Systems Administrator

MANTECH seeks a motivated, career and customer-oriented Sr. Systems Administrator to join our team in Key West, FL.

Responsibilities include but are not limited to:

• The Senior Systems Administrator leads the maintenance, configuration, and reliable operation of complex computer systems, network servers, and virtualization technologies, including those in critical or high-security environments
• They possess advanced knowledge of operating systems, server hardware, virtualization platforms, network infrastructure, and security best practices
• They install, configure, and upgrade complex systems and software, ensuring optimal performance, security, and availability
• They troubleshoot complex hardware and software errors, using advanced diagnostic tools and techniques to identify and resolve critical issues
• They develop and maintain comprehensive system documentation, including configuration guides, troubleshooting procedures, and Disaster Recovery Plans
• They lead the implementation of automation processes to streamline IT operations and improve efficiency
• They mentor and provide guidance to mid-level Systems Administrators, fostering their professional development and technical expertise
• They also contribute to the planning and implementation of IT infrastructure projects, ensuring alignment with organizational needs and industry best practices
• The Senior Systems Administrator provides direction and mentorship to subordinate staff

Minimum Qualifications:

• BA/BS in field necessary to assume Senior Systems Administrator or 4 additional years of experience in lieu of a degree.
• 9+ years of experience with 5+ years of relevant Systems Administrator experience.
• Proven track record of managing and maintaining complex IT infrastructure.
• Deep understanding of operating systems (e.g., Windows Server, Linux) and their administration.
• Expertise in server hardware, virtualization technologies (e.g., VMware, Hyper-V), and network infrastructure. Proficiency in scripting and automation tools (e.g., PowerShell, Bash).
• Knowledge of system security best practices and hardening techniques. Experience with troubleshooting hardware and software issues.
• Familiarity with IT Service Management (ITSM) principles and practices. Strong analytical and problem-solving skills to diagnose and resolve system-related issues. Ability to identify root causes and implement effective solutions.
• Experience in troubleshooting complex technical problems. DoD 8570.01-M IAT Level II certification within 6 months of commencing work on the Task Order.

Desired Qualifications:

• Masters degree in Computer Science, Information Technology, or a related field. Experience with cloud computing platforms (e.g., AWS, Azure, GCP).
• Knowledge of containerization technologies (e.g., Docker, Kubernetes).
• Familiarity with DevOps practices and tools. Experience with monitoring and performance tuning of systems.
• Relevant certifications in systems administration (e.g., Microsoft Certified Solutions Expert (MCSE), Red Hat Certified Systems Administrator (RHCSA), CompTIA Server+).
• Experience at a DoD Combatant Command (e.g., SOUTHCOM, NORTHCOM, CENTCOM, CYBERCOM, INDOPACOM, EUCOM, AFRICOM, STRATCOM, TRANSCOM, SOCOM, SPACECOM) or a component is desired.

Clearance Requirements:

• Must have an active TS/SCI clearance.

Physical Requirements:

• Must be able to remain in a stationary position 50%
• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer
• The person in this position frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.