Linux System Administrator, Level 3 Jobs

Linux System Administrator, Level 3Independent Software is a consulting, product, and solutions firm dedicated to the practical application of software and system engineering technologies to solve complex problems. We bring together world class engineers with proven engineering best practices, domain expertise, commercial technologies, and proven agile management approaches to create high value solutions aimed at helping our customers meet their most critical business and mission objectives.Benefits:Competitive salaryCompany Sponsored Health, Dental, and Vision Insurance plansCompany Paid Long Term Disability, Short Term Disability and Life InsuranceEmployee Assistance Program401(k) Profit Sharing Plan and Trust with company matchingA generous Paid Time Off and Holiday packagePaid trainingWork-life balanceAs a Linux System Administrator, Level 3 at Independent Software, you will support mission-critical systems in a complex, multi-environment infrastructure. You will work alongside a large team of System Administrators, System Engineers, Network Engineers, and government personnel to maintain, troubleshoot, and enhance Linux and Windows systems supporting both development and operational missions. This position involves hands-on system administration, DevOps support, system monitoring, and troubleshooting across multiple classified environments.Administer, maintain, and troubleshoot Linux and Windows servers, including physical and virtual systems.Support DevOps activities and sustainment of live, mission-critical systems.Monitor system health, investigate issues, and resolve incidents and service requests using JIRA.Maintain infrastructure services, including authentication, DNS, shared drives, home directories, and network communications.Support backend environments across multiple classification levels, including mission and operations users.Implement and maintain DISA STIG compliance and system security configurations.Manage storage systems, virtualization platforms, IP networking, and firewall configurations.Collaborate with System Administrators, System Engineers, Network Engineers, and government stakeholders to resolve technical issues and support mission requirements.Communicate system updates, technical challenges, and operational priorities across multiple teams and contracts.Required Skills and Qualifications:Linux system administration experience appropriate to the position level.Solid experience with STE/STN environments and DISA STIG compliance on Linux systems.Storage management experience, including CFS/DFS and NetApp.Experience with virtualization technologies such as Proxmox, Red Hat KVM, or VMware.Knowledge of IP networking and firewall administration.Experience working with containers or cloud environments.Desired Skills:Experience with automation tools such as Ansible or Salt.Scripting experience using Bash, Python, or Perl.Familiarity with backup and recovery solutions such as Rubrik or NetBackup.Experience with hyperconverged infrastructure platforms such as Harvester, Nutanix, or Cisco HyperFlex.Education and Experience:High School Diploma/GED or Associate's Degree in a technical field: 20 years of relevant experience.Bachelor's Degree or higher in a technical field: 10 years of relevant experience.Certifications:Must possess a current DoD 8570/8140 IAT Level II certificationClearance Requirement:Must possess an active TS SCI with appropriate Polygraph to be considered for this roleAt Independent Software, our people are the mission. We've built a company around collaboration, integrity, and innovation and we make sure our team has the tools and support to grow, succeed, and thrive. When you join us, you will:Support critical national security missions that matterBe part of a close-knit, employee-first culture where your voice is heardExpand your skills through ongoing training, mentorship, and career developmentEnjoy competitive compensation, generous benefits, and work-life balanceReady to take the next step in your career? Join us and be part of something bigger. Apply today. We're an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.