Senior Systems Administrator

• **Active DoD Security Clearance Preferred***
• **NO VISA SUPPORT or C2C***
• **On-Site in OKC Required***

Primary Function: We are seeking a highly skilled, motivated, flexible, and professional Senior Systems Administrator who will play a key role in our technology team. As a Senior Systems Administrator, you will perform system administration tasks, to include infrastructure administration and automation, information security support and configurations, software and OS installation/updates, and follow configuration/change control processes. The Senior System Administrator will create new solutions to solve hard technical problems and provide system support using best practices with modern and innovative tooling. The Senior System Administrator will support the design, validation and configuration management of computing systems, and monitor system performance to support capacity planning, backup and disaster recovery planning. The ideal candidate brings sound judgment, adaptability, and a team-first mindset, with the flexibility to step in when critical issues require attention. Hours and on-call needs vary; flexibility is expected as part of the role. Monitoring system performance, troubleshooting issues, and performing regular maintenance tasks such as applying updates, patches, and security fixes Assist Network Engineers with configuring and managing network services, such as DNS, DHCP, and Active Directory, to facilitate communication and resource sharing within the network Assist with implementing and managing backup strategies to ensure data protection and disaster recovery capabilities in case of system failures or data loss Assist with implementing and maintaining security measures, including firewalls, endpoint protection, and access controls, to protect the system from unauthorized access, malware, and other security threats Analyzing system performance, identifying bottlenecks, and implementing optimizations to improve overall system efficiency and responsiveness Maintaining accurate documentation of system configurations, procedures, and troubleshooting steps, as well as generating reports on system performance, security, and compliance Participating in the planning and implementation of new systems, upgrades, and migrations, ensuring compatibility and adherence to best practices Staying up to date with the latest technologies, industry trends, and security practices, and continuously improving skills and knowledge Work Conditions: Office-based with no remote work opportunities A minimum of 10% travel is required to support secure facilities and partner sites May require occasional work outside normal business hours to support operations and incident response. Job Requirements: High School Diploma or Equivalent Current TOP SECRET Clearance (will be validated upon hiring) Requires current CompTIA Security+ Certification 5+ years' experience in System Administration across Windows and Linux environments Experience managing and maintaining servers, workstations, and related infrastructure components In-depth knowledge and experience with various versions of Windows and Linux Servers, including installation, configuration, and administration Experience with Active Directory, Group Policy, DNS, DHCP, and other core services Advanced troubleshooting skills and problem-solving abilities and able to diagnose and resolve complex technical issues Strong knowledge of security best practices Experience with security auditing, vulnerability assessments, and incident response is also valuable Technically capable and a self-starter with strong organizational, interpersonal and customer service skills, both written and verbal. Clear communication, patience, problem-solving, and ability to follow documented processes. Ability to multitask, work under pressure and meet timelines on deliverables. Ability to work both independently and within a team. Willing to collaborate, share ideas openly and learn. Demonstrated understanding of, sensitivity to, and respect for working in a highly collaborative environment with diverse populations Preferred Requirements: Associate’s degree in IT, Computer Science, or technical field and/or IT certifications (i.e.: CompTIA A+, ITIL, Microsoft 365, etc.). 10 or more years' related work experience or an equivalent combination of education and experience Active certifications in Networking, INFOSEC, etc. Experience with Virtualization (AHV, VMWare ESXi, Hyper-V, etc.) Experience with VDI infrastructure, monitoring infrastructure, securing infrastructure, documenting in confluence and task tracking in Jira Working knowledge of Insider Threat and Industrial Security Program requirements. Familiarity with network security principles. As a full-time employee of Long Wave, you are eligible for our benefits package including: 401k Educational Assistance Life Insurance Employee Assistance Programs & Work/Life Solutions Paid Time Off This position’s standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off. #J-18808-Ljbffr Long Wave Inc.