Senior Systems Engineer

Responsibilities:

• The Senior Systems Engineer is responsible for building, securing, and sustaining the network and systems infrastructure that supports program and customer operations across on-premises, cloud, and hybrid environments. This role spans network configuration and troubleshooting, server and virtualization administration, and the security controls that protect both. The ideal candidate is a hands-on generalist who is comfortable owning a problem from diagnosis through implementation and documentation, works well alongside software engineers and field IT staff, and brings sound judgment to sensitive operating environments.
• Network Infrastructure
• Configure, maintain, and troubleshoot enterprise network infrastructure including routers, switches, firewalls, and VPN connectivity.
• Support the design and implementation of LAN, WAN, and remote site network solutions that meet operational and security requirements.
• Analyze network performance data, identify inefficiencies, and recommend technical solutions to improve reliability and throughput.
• Serve as an escalation point for network faults, performing structured troubleshooting to restore service and document root cause.
• Systems & Virtualization
• Administer physical and virtual server environments, including hypervisor management, operating system patching, and storage configuration.
• Perform system administration tasks such as user account management, access control, directory services, and backup and recovery.
• Plan and execute system and infrastructure upgrades, sequencing work to minimize disruption to ongoing operations.
• Support cloud and hybrid environments, including virtual networks, access controls, and connectivity between cloud and on-premises resources.
• Security & Hardening
• Implement and maintain firewall rules, access control lists, and network segmentation in line with established security policy.
• Harden systems and network devices against established security baselines and support remediation of identified vulnerabilities.
• Support the Security Operations Center in investigating security events affecting network and system infrastructure.
• Apply cybersecurity best practices to day-to-day configuration and change activity.
• Automation & Monitoring
• Develop scripts and automation to reduce repetitive configuration and administration tasks, using tools such as Python, PowerShell, or Ansible.
• Configure and maintain monitoring and alerting for network and system health, availability, and performance.
• Produce recurring reporting on infrastructure status and utilization for technical and program leadership.
• Documentation & Collaboration
• Develop and maintain standard operating procedures (SOPs), network and system diagrams, configuration baselines, and troubleshooting guides.
• Collaborate with Software Engineers, Field IT staff, and other technical teams to translate operational requirements into working solutions.
• Provide technical guidance and cross-training to Technical Associates and junior staff.
• Stay current with emerging infrastructure technologies and security practices, and recommend adoption where they support mission objectives.

Required Qualifications:

Desired Qualifications:

Key Competencies:

Location/Travel: