Senior Systems Administrator - Hybrid, Mission-Critical IT

TechFlow, Inc.; Arlington (VA); Hybrid; USD 75,000 - 85,000; Full time

Benefits offered by this job

ESOP

401k with Roth option

Paid time off

11 paid holidays

Medical, dental, vision

Life & AD&D insurance

Employee Assistance Program

Wellness resources

Training & development

Voluntary benefits: life & AD&D for aff

Pet Insurance

Job summary

TechFlow, Inc. seeks a Senior Systems Administrator to maintain and optimize the enterprise IT infrastructure for a critical DOD program, ensuring security, stability, and high availability. You will collaborate with cybersecurity, engineers, and government stakeholders to support mission‑critical operations.

Hybrid work in the Northern VA/DC metro area requires in‑person meetings. The ideal candidate has 6+ years of systems administration experience and strong Windows/Linux expertise with

Qualifications

• Bachelor’s degree in Information Technology, Computer Science, Information Systems, or a related technical discipline.
• Minimum of 6 years of progressively responsible experience in systems administration.
• Experience conducting routine system administration activities and maintaining detailed system administration logs.
• Experience administering and troubleshooting enterprise IT infrastructure supporting high‑volume, high‑availability environments.
• Demonstrated ability to diagnose and resolve complex technical issues across servers, operating systems, and supporting infrastructure.
• Experience utilizing system debugging tools, troubleshooting methodologies, and diagnostic processes.
• Strong understanding of Windows and/or Linux server administration.
• Experience with system monitoring, patch management, backup solutions, and performance optimization.
• Excellent analytical, organizational, and problem‑solving skills.
• Strong written and verbal communication skills with the ability to interact effectively with technical and non‑technical stakeholders.
• Ability to obtain Public Trust Security Clearance.

Responsibilities

• Administer, maintain, and support enterprise servers, operating systems, virtual environments, and infrastructure.
• Perform routine system administration tasks including user accounts, monitoring, patching, backups, and performance tuning.
• Maintain accurate logs, documentation, and configuration records.
• Monitor system health and implement actions to maximize availability.
• Troubleshoot and resolve complex issues in high‑volume environments.
• Use debugging tools and diagnostic processes to resolve problems.
• Respond to incidents and provide timely communication during support.
• Collaborate with cybersecurity to apply patches and maintain compliance.
• Support upgrades, deployments, and modernization initiatives.
• Assist with disaster recovery planning and backup validation.
• Develop and maintain technical documentation and SOPs.
• Participate in after‑hours maintenance and on‑call support.

Skills

Windows Server Admin

Linux Server Admin

System Monitoring

Backup & Recovery

Troubleshooting

Communication

Education

Bachelor’s degree in Information Technology, Computer Science, Information Systems, or related

Tools

VMware

Hyper-V

PowerShell

Python

Bash

Job description

TechFlow, Inc. seeks a Senior Systems Administrator to maintain and optimize the enterprise IT infrastructure for a critical DOD program, ensuring security, stability, and high availability. You will collaborate with cybersecurity, engineers, and government stakeholders to support mission‑critical operations.

Hybrid work in the Northern VA/DC metro area requires in‑person meetings. The ideal candidate has 6+ years of systems administration experience and strong Windows/Linux expertise with