Senior UNIX System Engineer 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. Required Qualifications: 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. 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. Desired Qualifications: Bachelor's degree in computer science or equivalent experience. Overview: We are seeking a Senior UNIX System Engineer to join our team supporting an ITES task order. TekSynap is a fast-growing high-tech company that understands both the pace of technology today and the need to have a comprehensive well planned information management environment. "Technology moving at the speed of thought" embodies these principles the need to nimbly utilize the best that information technology offers to meet the business needs of our Federal Government customers. We offer our full-time employees a competitive benefits package to include health, dental, vision, 401K, life insurance, short-term and long-term disability plans, vacation time and holidays. Work Environment and Physical Demands: Locations: Radford Army Ammunition Plant, Radford VA Type of environment: Office Noise level: Medium Work schedule: Schedule is day shift Monday Friday. May be requested to work evenings and weekends to meet program and contract needs. Amount of Travel: Less than 10% Physical Demands: 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. Work Authorization/Security Clearance: U.S. Citizen Secret clearance