Systems Administrator

Archer; Florida; On-site; USD 90,000 - 120,000; Full time

Job summary

Archer, in collaboration with MANTECH, seeks a Systems Administrator to support enterprise server infrastructure in Doral, FL. The role operates on a Panama Schedule with day and night shifts, including weekends and holidays.

You will manage Windows and Linux servers, Active Directory, patch management, and cross-team collaboration to maintain security and uptime. Responsibilities include configuring virtualization, documenting baselines, and driving improvements to IT operations.

Qualifications

• 7+ years of systems administration experience or 3+ years with a relevant degree.
• Experience with Windows, Linux, AD and virtualized enterprise environments.
• Proficient with patch management, baseline configuration, and hardware maintenance.
• Strong troubleshooting skills and ability to document complex IT details.

Responsibilities

• Install, configure, maintain, and troubleshoot enterprise server hardware and virtualization.
• Manage user accounts, permissions, AD structures, and group policies across networks.
• Perform routine maintenance, patching, upgrades, and security baselining.
• Monitor performance, storage, and services; resolve bottlenecks proactively.
• Collaborate with cross-functional teams to maintain high system availability.
• Maintain configuration management records and operational inventories.
• Recommend and implement process improvements in IT administration.

Skills

Windows & Linux server administration

Active Directory

Patch management

Documentation

Team collaboration

Education

High School Diploma + 7+ years experience

Bachelor's degree in CS/IT + 3+ years

Associate's degree + 5+ years

Tools

VMware

Patching tools

Job description

Archer is collaborating with MANTECH to connect them with exceptional professionals for this role.

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

This role follows a Panama Schedule. A Panama Schedule is three, 12-hour shifts and then three days off, repeating. This position rotates between night shifts and day shifts every 90 days. Individuals must be willing to work days, nights, weekends and holidays.

Responsibilities Include But Are Not Limited To

• Installing, configuring, maintaining, and troubleshooting enterprise server hardware, operating systems, and virtualized infrastructure.
• Managing user accounts, system permissions, active directory structures, and group policies across mission networks.
• Performing routine system maintenance, vulnerability patching, software upgrades, and diagnostic evaluations to ensure baseline security compliance.
• Monitoring system performance, storage availability, and network services to proactively identify and resolve operational bottlenecks.
• Collaborating with cross-functional technical teams, network engineers, and site leadership to maintain high system availability.
• Maintaining accurate configuration management records, technical system documentation, and operational baseline inventories.
• Recommending and implementing continuous process improvements to streamline IT administration and enterprise system efficiency.

Minimum Qualifications

• High School Diploma or GED with 7+ years of progressively responsible experience in systems administration.
• OR a bachelor's degree in Computer Science, Information Technology, or a related field with 3+ years of relevant experience
• OR an associate's degree with 5+ years of relevant experience
• Proven experience administering Windows and Linux server operating systems, Active Directory, and virtualized enterprise environments.
• Hands-on experience with system patch management, baseline configuration management, and server hardware maintenance.
• Proficiency in troubleshooting hardware, software, network services, and system access issues.
• Experience creating, maintaining, and communicating complex information technology documentation and system baselines.

Preferred Qualifications

• Relevant professional certifications such as CompTIA Security+, Microsoft Certified: Windows Server Hybrid Administrator Associate, or VMware Certified Professional (VCP).
• Direct experience supporting U.S. Military Command operations, Joint Task Force environments, or OCONUS Department of Defense deployments.
• Familiarity with DoD STIG implementation, vulnerability scanning tools, and secure baseline auditing procedures.
• Demonstrated ability to collaborate effectively across multi-disciplinary teams in dynamic, fast-paced operational settings.

Clearance Requirements

• Must hold a current/active TS/SCI security clearance.

Physical Requirements

• Must be able to remain in a stationary position 50%.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.