Systems Administrator - Senior
About The Position
The Senior Systems Administrator provisions, configures, and maintains highly available systems, driving automation, operational efficiency, and secure infrastructure management. The role uses Infrastructure as Code (IaC), configuration management, and automation tools to streamline administration, improve reliability, and strengthen cybersecurity. It also provides technical mentorship, promotes standardization, and leads enterprise system optimization initiatives. The role operates across air-gapped hybrid-cloud and on-premises environments, including complex multi-enclave ecosystems. The technical environment spans cloud platforms, infrastructure and networking, containerization, DevSecOps, databases, monitoring, identity and access services, cross-domain solutions, and Linux, Windows, and Mac operating systems.
Requirements
- US citizen with an active TS/SCI CI Poly.
- Experience managing Windows and/or Linux server environments.
- Strong knowledge of Infrastructure as Code (IaC) and configuration management tools such as Terraform, Ansible, Puppet, or Chef.
- Experience with cloud and hybrid-cloud platforms such as AWS, Azure, or Google Cloud.
- Knowledge of system monitoring, backup, disaster recovery, and performance optimization practices.
- Experience with patch management, automation, and enterprise security controls.
- Strong troubleshooting, analytical, and problem-solving skills.
- Knowledge or experience with air-gapped hybrid-cloud and on-premises operational environments, including complex multi-enclave ecosystems.
- Experience or capability with AWS GovCloud/SC2S/C2S and GCP cloud platforms.
- Experience with Nutanix host and cluster configuration and management using Prism Central, and NDFS configuration and management.
- Knowledge of Cisco switching, routing, firewalling, and site-to-site functionality such as IPSEC, DMVPN, and SD-WAN.
- Experience with locally hosted GPU servers and multi-tenant Cross-Domain Solutions (CDS).
- Experience with containerization and orchestration, including Docker, Kubernetes, or OpenShift.
- Knowledge of cloud-native security implementation and security accreditation processes.
- Experience with advanced GitLab CI/CD pipelines and DevSecOps practices.
- Knowledge of enterprise database services such as RDS, RDS Aurora, and DynamoDB, and serverless architectures such as Lambda.
- Knowledge of cloud networking and VPC configuration.
- Experience with monitoring, logging, and data platforms such as Elasticsearch, OpenSearch, and Splunk.
- Knowledge of microservices architecture and API Gateway implementation.
- Development experience with Python, .NET/C#, and related languages.
- Knowledge of identity and access services such as Microsoft Active Directory, LDAP/OpenLDAP, Entra ID, and Keycloak.
- Experience with high-assurance cross-domain and encryption solutions such as TACLANE and NCAP.
- Knowledge of cloud cost-optimization techniques.
- Experience with Linux distributions such as Rocky, Red Hat, Amazon Linux, or Ubuntu, as well as Windows and Mac OS.
Nice To Haves
- Experience with containerized environments and orchestration platforms such as Docker and Kubernetes.
- Microsoft, Red Hat, VMware, AWS, Azure, or comparable infrastructure certifications.
- Knowledge of DevSecOps, CI/CD pipelines, and infrastructure automation frameworks.
- Experience supporting highly regulated, government, defense, or enterprise environments.
- Familiarity with compliance frameworks, vulnerability management, and security auditing processes.
- Experience mentoring junior administrators and leading infrastructure improvement initiatives.
Responsibilities
- Provision, configure, and maintain highly available systems across enterprise environments.
- Drive automation initiatives using Infrastructure as Code (IaC) and configuration management tools.
- Implement and optimize system reliability, performance, and security controls.
- Strengthen cybersecurity through secure infrastructure management practices.
- Provide technical mentorship and guidance to systems administration teams.
- Promote standardization of system configurations and operational procedures.
- Lead system optimization initiatives to improve operational efficiency.
- Monitor system health and resolve issues to ensure continuous availability.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
