Senior Systems Administrator

CACI International•Fort Belvoir, VA

1d•$86,600 - $181,800•Onsite

About The Position

We are seeking a highly capable IT Infrastructure professional to join our team supporting a mission-critical customer program. This is an opportunity to work in a dynamic environment where reliable, secure, and resilient infrastructure is essential to the success of the mission. You will administer, configure, and manage servers, storage systems, virtualization platforms, and network infrastructure to ensure appropriate function of hardware, software, and system specifications. You will play an important role in ensuring the availability, performance, security, and integrity of the infrastructure supporting the customer’s mission. This role is well suited for someone who wants to take ownership of critical infrastructure, work alongside experienced technical teams, and contribute directly to a mission where technical excellence, reliability, and security matter every day.

Requirements

Active Secret Clearance
Bachelor's degree in Computer Science, Information Technology, or a related field
5-10+ years of relevant experience in systems administration, infrastructure management, network administration, or a related technical discipline
Strong problem-solving skills to troubleshoot infrastructure hardware and software issues
Demonstrated experience supporting U.S. military, DoD, Intelligence Community, or other government customers
Strong customer-facing communication and presentation skills
Extensive Linux and Windows server/workstation administration and troubleshooting experience
Deep knowledge of virtualization technologies (VMware, Hyper-V, or similar platforms)
Strong understanding of TCP/IP networking, routing, switching, firewalls, and network services
Experience with security patch management, system hardening, and security compliance
Knowledge of storage systems, backup solutions, and disaster recovery procedures
Ability to work independently with minimal supervision
Ability and willingness to travel to customer

Responsibilities

Administer and manage IT infrastructure including servers, storage systems, virtual platforms, and network connectivity
Analyze, troubleshoot, and resolve issues with IT hardware and software infrastructure using systems analysis techniques and procedures
Provide system administration for assigned infrastructure and establish and maintain security as it relates to users
Apply security patches and operating system upgrades to ensure the security and integrity of the technical environment
Configure and deploy Windows and Linux-based servers, workstations, and supporting infrastructure
Implement and maintain virtualization platforms for various applications and services
Establish and maintain system configurations to meet technical and business requirements
Work closely with the cybersecurity team to maintain seamless system operations while adhering to security protocols
Implement security controls and access management for user systems and infrastructure
Ensure compliance with established security standards and procedures
Support new infrastructure projects from planning through implementation
Maintain all configuration documentation for assigned infrastructure
Develop standard operating procedures, system configuration guides, and technical documentation
Establish operational plans for technical areas and implement best practices
Diagnose complex problems spanning servers, operating systems, storage, networking, and hardware
Use systems analysis techniques to ensure appropriate function of system specifications
Provide on-site and remote technical support to resolve infrastructure issues
Coordinate with various teams to resolve technical and operational challenges
Present system capabilities and infrastructure solutions to technical and business stakeholders
Communicate with executive leadership on matters of technical importance
Provide feedback to improve infrastructure functionality and efficiency