Senior Systems Administrator & Database Engineer

Job Title: Senior Systems Administrator & Database EngineerJob Category: Information TechnologyTime Type: Full timeMinimum Clearance Required to Start: TS/SCI with PolygraphEmployee Type: RegularPercentage of Travel Required: NoneType of Travel: None* * *The OpportunityThe 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 operationsManage system accounts, permissions, RBAC, PKI, and domain policies across multi‑domain environments.Administer, operate, and optimize Microsoft SQL Server databases across classification levelsPerform installation, configuration, performance tuning, indexing, monitoring, and backup/restore of SQL Server instancesSupport database integration with logging, monitoring, and security platforms.Ensure proper log generation, formatting, forwarding, and ingestion across hybrid on‑prem and cloud environmentsMaintain log integrity, retention compliance, and readiness for assessments and audits.Maintain STIG compliance, secure configurations, and system baseline documentationInterpret vulnerability scan results and coordinate remediation efforts across Windows, Linux, networked systems, and SQL ServerMaintain awareness of cloud auditing, activity tracking, and compliance monitoring for mission systems. QualificationsRequired: Active TS/SCI with Poly Bachelor’s degree in Computer Science, Information Technology, Engineering, or related fieldExperience 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 visibilityStrong documentation skills and cross‑functional communication abilities DesiredSecurity+ 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 and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.A focus on continuous growth.Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.Pay RangeThere are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.The Proposed Salary Range For This Position Is$120,800 - $265,800CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.