> Markdown version of [/jobs/ext/1422514-senior-unix-system-engineer-w-secret-clearance](https://www.wearedevelopers.com/jobs/ext/1422514-senior-unix-system-engineer-w-secret-clearance). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior UNIX System Engineer w/Secret Clearance - **Company:** TekSynap Corporation - **Location:** Radford, VA, United States - **Experience:** Expert - **Salary:** $100,000.0 - $150,000.0 - **Contract:** Permanent contract - **Skills:** Unix, Command-Line Interface, CompTIA Security+, Cyber Security, Data Centers, Disaster Recovery, Domain Name System (DNS), Firmware, Information Technology Enabled Service (ITES), Simple Mail Transfer Protocols, Network Time Protocols, Red Hat Enterprise Linux, Software Deployment, Solaris (Operating System), Telnet, Oracle Linux, Virtual Local Area Networks, File Transfer Protocol (FTP), SC Clearance, Selinux, Information Technology, Iptables, Patch Management, 3-tier Architectures, Software Version Control, User Accounts - **Published:** July 24, 2026 - **Apply:** https://www.juju.com/job/00000000gj19al ## About the Role + Five (5) years as a UNIX Systems Administrator or IT Engineer, including task automation. + Three (3) years of experience in patch management (YUM, RPM) and applying security updates. + Three (3) years working in complex networking environments, using VLANs and tools like ifconfig, netstat, ssh, and telnet. + Three (3) years of system hardening using firewalld/iptables and host configurations. + Three (3) years managing local user accounts via CLI. + Three (3) years creating, maintaining, and executing SOPs for repeatable processes and recovery operations. + Three (3) years configuring and maintaining services: DNS, SFTP, SMTP, and NTP. + Strong team collaboration and communication skills. + Three (3) years working with SELinux (basic and advanced configuration). + Experience with Cybersecurity patching, STIGs/SRGs, RMF, SCA-V, and CORA. + Experience with large-scale hardware/software deployments across geographically dispersed sites. + Familiarity with emerging network and infrastructure management tools and best practices + Demonstrated experience supporting government agencies, customers, or contracts within federal environments. This includes the Intelligence Community (IC), Department of Defense (DoD), Federal Civil agencies, and military organizations. Prior experience supporting the same or similar contract, with an in-depth understanding of the customer environment, requirements, and operational landscape, is highly desirable. Certifications + CompTIA Security+. + Computing Environment (CE) Certification (e.g., RedHat) can be waived for 30 days post-start. Clearance + Secret - IT-II Non-Critical Sensitive clearance or Tier 3 (T3) investigation, + Bachelor's degree in computer science or equivalent experience., The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. While performing the duties of this job, the employee is regularly required to use hands to handle, feel, touch; reach with hands and arms; talk and hear. The employee is regularly required to stand; walk; sit; climb or balance; and stoop, kneel, crouch, or crawl. The employee is regularly required to lift up to 10 pounds. The employee is frequently required to lift up to 25 pounds; and up to 50 pounds. The vision requirements include close vision, distance vision, peripheral vision, depth perception, and ability to adjust focus. ## Description We are seeking a **Senior UNIX System Engineer** to join our team supporting an ITES task order., + Manage, maintain, deploy, troubleshoot, and support Red Hat Enterprise Linux, Oracle Enterprise Linux, and Solaris UNIX servers. + Monitor and tune system performance to ensure optimal operations across a mixed customer environment. + Plan and implement new system hardware and software, including lifecycle management and firmware version control. + Create, maintain, and improve technical instructions, operating procedures, and policies. + Perform system hardening and report on security and operational status. + Identify system improvements and lead new software/hardware integrations. + Generate and analyze utilization reports using existing tools to guide problem identification and resolution. + Provide support and periodic preventive maintenance in a data center environment. + Demonstrate and implement technologies to enhance efficiency, scalability, and performance of the current environment. + Configure and maintain key services such as DNS, SFTP, SMTP, and NTP. + Manage a large pool of local users via command line and enforce access control policies. + Document and execute repeatable processes and disaster recovery protocols via SOPs. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Enhancing Workload Security in Kubernetes](https://www.wearedevelopers.com/videos/356-enhancing-workload-security-in-kubernetes) - [Chat App Leak, Tesla’s Blurry Dashcam, and Meta Currency Beats Bitcoin - Keith Cirkel](https://www.wearedevelopers.com/videos/1857-chat-app-leak-tesla-s-blurry-dashcam-and-meta-currency-beats-bitcoin-keith-cirkel) - [WeAreDevelopers LIVE - Node and Package Security](https://www.wearedevelopers.com/videos/2138-wearedevelopers-live-node-and-package-security) - [For the Cars and the Curious: Android Drift](https://www.wearedevelopers.com/videos/499-for-the-cars-and-the-curious-android-drift) - [The Time Paradox: Building Timezone-Safe Python/Django Applications](https://www.wearedevelopers.com/videos/1915-the-time-paradox-building-timezone-safe-python-django-applications) ## Related Articles - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)