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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # UNIX/Linux/Solaris Engineer - **Company:** General Dynamics Information Technology - **Location:** Bethesda, MD, United States - **Experience:** Expert - **Salary:** $127,500.0 - $172,500.0 - **Contract:** Contract - **Skills:** Microsoft Windows, Artificial Intelligence, Unix, Cyber Security, System Configuration, Linux, Domain Name System (DNS), HP Systems Insight Manager, HP SiteScope, Korn Shell, Network Troubleshooting, Oracle VM Server for SPARC, Oracle (Applications), Red Hat Enterprise Linux, Ansible, Runbook, Screenshots, Shell Script, Solaris (Operating System), Tripwire, Software Vulnerability Management, Data Logging, ServiceNow IT Service Management, Firewalls (Computer Science), Patch Management, CIS Benchmarks, Puppet, Splunk, Servicenow, Vmware - **Published:** August 19, 2026 - **Apply:** https://dejobs.org/x/x/4BF33129F1C1485A956E5CA80CBB3560/job/ ## About the Role Oracle Solaris,Red Hat Enterprise Linux (RHEL),ServiceNow IT Service Management (ITSM),Shell Scripting Experience: 5 + years of related experience, * BS/BA or equivalent experience. * 5+ years administering Oracle Solaris (Zones/LDOMs) and/or Red Hat Enterprise Linux at scale, including OS patching and change execution in regulated environments. * Hands-on with ABE-based Solaris patching, rollback, and vendor bundle planning; experience adjusting to non-monthly patch cadences. * Practical experience with Puppet and Ansible for UNIX automation (playbooks/modules), plus strong shell scripting (bash/ksh). * Familiarity with VMware-hosted Linux operations and coordination with platform teams. * Operational monitoring and security tooling: SL1, Tenable, Tripwire, Splunk; host-levelfirewallmanagement and security policy enforcement (e.g., password lifecycles). * Proven use of ServiceNow (CAB/change templates; incident/RCA) and on-call processes viaXMatters. * Strong documentation habits (SOPs/runbooks with screenshots) and collaborative posture with customers and cyber teams. * Must be able to obtain andmaintaina Public Trust., * Designed Ansible-first automation to replace legacy tools (e.g., Oracle Ops Center) for Solaris patch management; integrated automation outputs with ServiceNow tasks/approvals. * Experience upgrading Oracle OEM and validating monitoring/administration flows during cutover. * Familiarity with CIS controls and practical hardening for UNIX/Linux (file integrity, SSH posture, logging,firewall). * Capacity to coach customers on reliable application monitoring (SL1 hooks or customer tools like SiteScope) while keeping OS monitoring/alerting clean. Clearance: Ability to obtain and maintain Public Trust (onsite fingerprinting required) ## Description GDIT is seeking a UNIX/Linux/Solaris Engineer to support NIH CIT's HSS program. You will keep mission-critical systems stable, secure, and performant across Solaris (Zones/LDOMs) and Red Hat Linux on VMware, while applying careful, responsible automation to reduce toil-modernizing only where it strengthens reliability, security, and customer outcomes., * Operate and administer Solaris and Red Hat estates: Solaris-administer Zones and Logical Domains (LDOMs); manage OS lifecycle, patching, and hardware (Oracle platforms such as T-series where applicable). Red Hat-administer RHEL systems virtualized on VMware (in partnership with the Windows/VMware team). * Patching & change execution: Drive Solaris patching using Alternate Boot Environments (ABE)-build, patch, and reboot into ABEs on standard cycles (e.g., 3rd Friday for non-prod, 4th Friday for prod) with rapid rollback capability if needed. * Adapt to Oracle's revised patch cadence (security bundles every ~6 weeks, with potential interim bundles) and plan out-of-band updates when required by vulnerability severity. * Maintain Red Hat patching via Puppet, ensuring customer-managed servers also receive monthly OS updates. * Automation & tool transitions: Lead the transition off Oracle Ops Center (EOL/waiver ends Dec 31) toward Ansible (preferred) or Puppet playbooks for Solaris patch automation; author playbooks/modules and operational runbooks for the new process. * Support upgrade from Oracle OEM 13.5 to 24 AI and ensure monitoring/administration workflowsremainreliable during and after the migration. * Monitoring & security operations: Configure and consume SL1 monitoring for OS/hardware health (CPU/memory/filesystems) and notifications; coordinate with DCOB (operations management) for platform configuration as needed. * Triage security alerts from Tenable scans and follow-on tickets in Tripwire (file integrity) and Splunk (log-based anomalies such as SSH attempts); enforce host-level firewalls and raise network blocks when needed. * Implement account policies (e.g., passwordexpirationchanges) safely across environments;validatechanges in non-prod first to avoid service impact. * Service models & customer engagement: Solaris-own root and full OS/hardware administration; grantsudofor customer application operations. Red Hat-support bothmanaged (GDIT administers OS; customers manage apps) and customer-managed servers (customers hold root; GDIT ensures OS patching and provides consulting on request). * Incident response & governance: Use ServiceNow for change and incident management; adhere to CAB approvals and standard change windows; deliver post-incident RCA where applicable. * Participate inXMatterson-call rotations (15-minute acknowledge; tiered escalation), coordinating with NOC bridge during enterprise events (e.g., DNS or network issues). * Documentation & collaboration:MaintainSharePoint-hosted SOPs/runbooks (with screenshots) covering patch orchestration (ABE), rollback, automation playbooks, OEM upgrade steps, SL1 alerting, and security/vulnerability remediation workflows; align with weekly UNIX-security syncs and customer meetings. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [WebAssembly: The Next Frontier of Cloud Computing](https://www.wearedevelopers.com/videos/972-webassembly-the-next-frontier-of-cloud-computing) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [WeAreDevelopers LIVE - Node and Package Security](https://www.wearedevelopers.com/videos/2138-wearedevelopers-live-node-and-package-security) - [Generating code with Angular schematics](https://www.wearedevelopers.com/videos/129-generating-code-with-angular-schematics) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [DevOps Engineer Salary [2023]](https://www.wearedevelopers.com/magazine/203-devops-engineer-salary-2023)