Systems Engineer Senior (TS/SCI with Poly Preferred) with Security Clearance

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry. At GCI, we solve the hard problems. As a Senior Systems Engineer, a typical day will include the following duties: This position will apply expertise in the installation, configuration, operations, and maintenance of Linux-based architectures. The engineer will focus on improving the stability and performance of the platform, maintaining and improving the security posture of the domain, continuous monitoring of system health, and troubleshooting issues that arise. This individual is accountable for Linux, and application systems that support the infrastructure. Responsibilities on these systems include system administrator engineering, operations and maintenance, and research and development to ensure continual operation. The individual must be proficient in building, documenting, and providing Tier 3 engineering support. The position requires technical knowledge of systems, networks, and application security as well as a solid understanding of security frameworks, policies, processes, hardware, and standards. The candidate must have strong analytical skills for troubleshooting complex issues, attention to detail, and the ability to multitask in a fast-paced environment. Key duties include maintaining operating systems, application support, integration, design, and assistance with additional duties as needed to support the team. KEY RESPONSIBILITIES Provide operational support for Linux operating systems and applications. Support virtual and physical infrastructure of servers running in a dev, test, and production configuration, and support an infrastructure of different applications comprising of technical applications that drive hardware, system tools, and infrastructure support applications. Prepare environments to transition to cloud services. Maintain the integrity and security of systems by monitoring security feeds in support of Continuous Monitoring activities. Develop and maintain standards and software development support procedures for applications across a complex computing infrastructure. Develop and maintain comprehensive documentation. Monitor application and operating system performance; analyze, document and remediate incidents. Develop and oversee implementation of testing strategies and document the results. Leverage scripting and system automation tools. Maintain current knowledge of relevant technologies. Research and recommend hardware and software, coordinate installation, and provide backup recovery. Review incidents to understand the root causes and ensure implementation of proper fixes. Collaborate with developers, engineers, and the client technical teams to ensure proper integration of capabilities. Travel quarterly to client sites (in the Washington metro area or to select CONUS sites) to perform scheduled maintenance and upgrades as required. Provide on-site training on the systems for clients on as an-needed basis. EDUCATION AND EXPERIENCE Bachelor's Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work experience. REQUIRED QUALIFICATIONS Extensive experience with Redhat and/or other LINUX variations and scale of implementations (CentOS, Red Hat, Rocky, etc. and medium to enterprise deployments. Experience with IA hardening Linux for accreditation. Experience working with Agile and waterfall methodologies. Demonstrated experience in server builds using automated mechanism. Experience working on a software development team on production releases of code. Experience with Ansible and/or Puppet. Demonstrated experience with code maintenance using Git, Gitlab, and/or Github. Demonstrated experience with Atlassian Jira and Confluence. Demonstrated experience collaborating with other systems administrators, application developers, and network engineers to solve complex problems. Able to support long-term development tasks and quarterly O&M update tasks. Demonstrated experience working with syslog applications such as Splunk. Possess a current SEC+ certification DESIRED SKILLS Certified Linux System Administrator Knowledgeable/background in working with hardware and varied interfaces (drivers, hardware integration). Demonstrated experience with virtual machine hosting infrastructures. Demonstrated experience with building, upgrading and maintaining applications and services in a cloud-based account/system. Experience with network security appliances a plus. Cloud certifications a plus Certifications relating to IT Security (CISSP, GIAC) a plus Experience with system engineering concepts and applications. Experience with digital signal processing and/or satellite communications. Demonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management and patching and software development. Education Preferred: Bachelor of Science or higher in Computer Science or related field. A candidate must be a US Citizen and requires an active/current TS/SCI clearance and eligible for Poly upgrade. Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans