Senior Systems Administrator

About the role

The System Administrator manages and supports enterprise, regional, and local server environments hosting mission-critical applications and infrastructure services. This role is responsible for server administration, database administration, system deployment, performance optimization, security compliance, incident response, backup and disaster recovery, documentation, and cross-platform support across Windows, Linux, and UNIX-based environments.

Responsibilities

• Oversee and manage both virtual and physical servers for enterprise, regional, and local systems.
• Install, configure, document, maintain, and support server environments hosting mission-critical applications and infrastructure services.
• Provide cross-platform support for Windows, Linux, and UNIX-based server environments, with a focus on application and database performance, troubleshooting, and configurations.
• Install, configure, and maintain database systems, including Oracle and Solr.
• Perform database backups, restores, and performance tuning.
• Monitor database health and analyze performance metrics.
• Troubleshoot database issues to ensure smooth operations.
• Design, deploy, and maintain secure Windows servers in AWS C2S environments.
• Install and configure operating systems, database software, and application software across physical and virtual servers.
• Ensure system software is properly integrated and supports enterprise applications.
• Monitor and optimize system performance, including CPU, memory, disk usage, and response times for AWS C2S environments.
• Implement proactive measures to address potential performance bottlenecks.
• Troubleshoot and resolve system issues related to resource usage.
• Ensure systems and databases meet security standards and comply with relevant regulations.
• Implement and enforce security policies.
• Conduct regular vulnerability assessments.
• Manage security updates and patches for operating systems and database environments.
• Provide Tier 1 and Tier 2 support for troubleshooting, diagnosing, and resolving system and database issues.
• Respond to service outages, coordinate recovery efforts, and ensure timely resolution of problems.
• Assist in root cause analysis and implement corrective actions to prevent future issues.
• Plan and execute system downtime for scheduled maintenance, upgrades, and new releases.
• Install and test patches and updates for operating systems and database applications, including Oracle and Solr.
• Oversee and validate regular system and database backups.
• Ensure data integrity.
• Support disaster recovery plans by testing restoration procedures.
• Work with cross-functional teams and external partners to install and configure server systems.
• Support system integrations with other applications.
• Provide user support and consult with clients on complex technical problems.
• Maintain accurate documentation of system configurations, hardware, software, and processes.
• Provide clear reporting for troubleshooting, maintenance, and security audits.
• Train and mentor staff on server and database management best practices.
• Assist in developing training materials and ensuring operators are equipped to support the systems.

Qualifications

• BA/BS degree with 5+ years of relevant experience; or Master's degree with 3+ years of relevant experience.
• An additional 4 years of experience may be considered in lieu of a degree.
• Proven experience in system administration, specifically with database management, Windows, Linux, and UNIX environments.
• Proven experience in AWS C2S, specifically with deployment, management, networking, and security of C2S instances.
• Experience managing both virtual and physical servers.
• Experience performing system monitoring, backup management, and performance optimization.
• Must have or be able to obtain CompTIA Security+ certification.

Location: Reston, VA
Security Clearance: Active TS/SCI w/ CI Poly (Required)
Job Type: Full-Time

Pay

• Target Salary Range: $150,000 - $180,000