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Linux Systems Administrator
2 months ago
We are seeking a highly skilled Linux Systems Administrator to join our team at Open Systems Technologies Corporation. As a key member of our infrastructure team, you will be responsible for the installation, configuration, operation, and maintenance of both Windows- and Linux-based architectures.
Key Responsibilities- Operational Support: Provide daily operational support for Linux and Microsoft Windows operating systems and applications.
- Infrastructure Management: Support virtual and physical infrastructure of servers running CentOS in a dev, test, and production configuration, and support infrastructure of different applications comprising of end user applications, developer tools, and infrastructure support applications.
- Cloud Infrastructure: Develop and maintain environments running in Amazon Web Services (AWS).
- Security and Compliance: Maintain the integrity and security of systems by monitoring security feeds and dashboards in support of Continuous Monitoring activities.
- Documentation and Standards: Develop and maintain standards and procedures for applications across a complex computing infrastructure, and develop and maintain comprehensive documentation.
- Performance Monitoring: Monitor application and operating system performance; analyze, document, and remediate incidents.
- Testing and Implementation: Develop and oversee implementation of testing strategies and document the results.
- Automation and Scripting: Leverage scripting and system automation tools.
- Knowledge Management: Maintain current knowledge of relevant technologies, research and recommend hardware and software, coordinate installation, and provide backup recovery.
- User Interaction: Interact with users and evaluate vendor products.
- Root Cause Analysis: Review incidents to understand the root causes and ensure implementation of proper fixes.
- Collaboration: Collaborate with system administrators, engineers, and the client to ensure proper integration of applications.
- Clearance: TS/SCI w FS Poly.
- Technical Experience: Extensive experience with Redhat and/or Centos, demonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replication.
- Automation and Scripting: Demonstrated experience with Ansible and/or Puppet, demonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management, and patching and software development.
- Cloud Infrastructure: Demonstrated experience with building, upgrading, and maintaining applications and services in an AWS account.
- Version Control: Demonstrated experience with code maintenance using Git, Gitlab, and/or Github.
- Project Management: Demonstrated experience with Atlassian Jira and Confluence.
- Database Management: Demonstrated experience with managing Elasticsearch on CentOS.
- Collaboration: Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems.
- Education: Bachelor's degree in computer science, Information Technology, or other related technical discipline, or equivalent combination of education, technical certifications, training, and work/military experience.
- Certifications: Certified Linux System Administrator.
- Network Engineering: Knowledge of network engineering fundamentals and network design.
- Microsoft Windows: Demonstrated experience with Microsoft Windows Server versions 2008, 2016.
- System Center: Demonstrated experience with SCCM, WDS, MS SQL Server, Powershell, batch scripting.
- Log Management: Demonstrated experience working with Syslog applications such as Splunk.
- Storage Systems: Demonstrated experience with NetApp NAS systems a plus.
- Hadoop Infrastructure: Demonstrated experience with Hadoop infrastructure and applications (HDFS, Hue, Impala, Oozie, Solr, Spark, Yarn, Zookeeper) a plus.
- Cisco Networking: Demonstrated experience with Cisco Nexus switches and Cisco Firepower Security Appliances a plus.
- AWS Certification: AWS Certification a plus.
- ITIL Foundations: ITIL Foundations Certification a plus.
- IT Security: Certifications relating to IT Security (CISSP, GIAC, Security+) a plus.
We offer a comprehensive benefit package that includes 3 weeks paid time off, 2 weeks Holiday pay, medical/dental coverage, STD, LTD, Life Insurance, AD&D, 401k with up to 4% match, and end of year profit sharing paid out in 401k.
