Senior Systems Administrator & Database Engineer Security Clearance

Position: Senior Systems Administrator & Database Engineer with Security Clearance
Job Title:

Senior Systems Administrator & Database Engineer Job Category:
Information Technology Time Type:
Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type:
Regular Percentage of

Travel Required:

None Type of Travel:
None *
*
* The Opportunity:

The Senior Systems Administrator & Database Engineer is responsible for secure operations, configuration management, and sustainment of mission- critical systems across multiple classification domains. The engineer provides advanced support for both Windows and Linux environments, administers Microsoft SQL Server databases, maintains compliance and system integrity, and ensures reliable operations across enterprise platforms.
This role supports cloud integration, system modernization, and operational continuity across classified and unclassified networks. Responsibilities include system hardening, vulnerability remediation, onboarding systems into enterprise security/log visibility platforms, preparing RMF/ATO documentation, and troubleshooting complex technical issues end - to
-end. The engineer works closely with Cybersecurity, Network Engineering, Cloud Engineering, and mission system owners to ensure stability, availability, and compliance of core mission systems. Responsibilities:
* Administer and maintain Linux and Windows systems across all classification domains, ensuring secure and compliant operations

* Perform configuration management, patching, STIG hardening, virtualization support (VMs, VDI), storage integration, and backup/restore operations

* Manage system accounts, permissions, RBAC, PKI, and domain policies across multi-domain environments.

* Administer, operate, and optimize Microsoft SQL Server databases across classification levels

* Perform installation, configuration, performance tuning, indexing, monitoring, and backup/restore of SQL Server instances

* Support database integration with logging, monitoring, and security platforms.

* Ensure proper log generation, formatting, forwarding, and ingestion across hybrid on-prem and cloud environments

* Maintain log integrity, retention compliance, and readiness for assessments and audits.

* Maintain STIG compliance, secure configurations, and system baseline documentation

* Interpret vulnerability scan results and coordinate remediation efforts across Windows, Linux, networked systems, and SQL Server

* Maintain awareness of cloud auditing, activity tracking, and compliance monitoring for mission systems.

Qualifications:

Required:

* Active TS/SCI with Poly
* Bachelor's degree in Computer Science, Information Technology, Engineering, or related field

* Experience administering Windows and Linux systems in classified multi-network environments

* Strong experience with Microsoft SQL Server administration (performance tuning, backup/restore, security, monitoring)

* Experience supporting enterprise logging/monitoring/observability pipelines (platform-agnostic)

* Hands-on experience with virtualization, storage, backup/restore, and system hardening

* Experience with cloud system administration (networks, images, RBAC, policies, auditing)

* Familiarity with vulnerability scanning tools (Nessus, SCAP, STIG Viewer)

* Experience troubleshooting network connectivity, firewall, and routing issues impacting system visibility

* Strong documentation skills and cross-functional communication abilities Desired:
* Security+ CE or DoD 8570 IAT Level II certification

* AWS or Azure administrator certification

* Experience with containers (Kubernetes), automation (Ansible/Terraform), or CI/CD workflows

* Experience supporting SIEM/log analytics onboarding and log source integration

* Experience with DNS, DHCP, certificates, and PKI

* Experience with SQL scripting, performance tuning, and database automation.

- What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company…