Gray Tier Technologies
Senior Linux Systems Administrator (S)
Gray Tier Technologies, Chicago, Illinois, United States,
Gray Tier Technologies has an opening for a
Linux Systems Administrator
for the Global Solutions Management – Operations II (GSM-O II) contract. This contract includes the Operations, Sustainment, Maintenance, Repair and Defense of the Defense Information System Network (DISN) within the DOD Information Network (DODIN) in support of the Defense Information Systems Agency (DISA).
This role is primarily remote, but candidates must be within commuting distance to Scott AFB, IL, Ft. Meade, MD, or Ogden, UT, for on-site support.
Primary Responsibilities
Work independently to ensure the reliability,
availability and security of the solution by proactively monitoring the
system, troubleshooting, and resolving issues to ensure high availability
and continuity of operations.
Maintain configuration management and baseline control
of development, test, pre-production and production environments.
Conduct regular security scans, analyze results and
implement resolutions including testing of new hardware and software and
ensure compliance with DISA STIGs.
Operate and maintain the solution, including patching
of operating systems and COTS/FOSS/GOTS applications.
Perform and test regular backups.
Monitor and tune system and network performance,
including RHEL and VMWare systems, for optimal system availability.
Configure, manage and maintain components of the
solution (application servers, load balancers, databases, operating
systems, etc.)
Deploy systems in the Lab environment, integrate with
other systems, perform testing and validation.
Manage, track and maintain configuration items
including licenses, SSL certificates and the hardware/software baseline.
Support baseline deployments, upgrades and updates to
the production environment including the installation and configuration of
new software and hardware.
Lead planning and migration of infrastructure and
applications from the Data Center environment to the AWS cloud.
Create, maintain and implement detailed documentation
and maintain standard operating procedures.
Perform trend analysis on component failures,
network/node outages, and system performance parameters.
Interact with software and hardware vendors to evaluate
vendor products and make recommendations to purchase hardware and
software.
Work with network engineers and developers to
troubleshoot environment issues as necessary.
Escalate support issues to vendors as necessary and
coordinate resolution.
Manage access including creation and management of user
and service accounts.
Provide support on a M-F business hours schedule, also
responsible for on-call, extended hour, and weekend support as required by
mission or emergency situations.
Basic Qualifications
Bachelor's degree in Information Technology, Computer
Science or a relevant technical discipline and 5 years of relevant
experience; Additional experience, education and training may be considered
in lieu of degree.
Active Secret security clearance.
Ability to obtain Security+ certification or equivalent
DoD 8570 IAT II certification within 60 days of start date.
Experience installing, managing and maintaining RHEL 7
Linux servers in a production environment
Experience troubleshooting and managing virtualized
infrastructure in an VMware ESXi environment.
Experience deploying and managing infrastructure and
software applications in AWS
Experience applying DevOps concepts and tools to
automate repetitive tasks and ensure baseline consistency across multiple
environments
Experience installing, configuring, securing,
deploying, managing, monitoring and maintaining a variety of complex
software products across multiple environments.
Experience with the deployment of McAfee HBSS tools in
a Linux environment
Experience with scripting in Bash and experience in
other languages such as Perl or Python
Thorough knowledge of TCP/IP networking.
Application and configuration of security settings and
other IA best practices, such as those as required by DISA STIGs and SRGs
Experience supporting, installing and configuring
enclave Ethernet switches, storage area networks (SAN), and network
attached storage (NAS).
Ability to work independently in a fast-paced
environment.
Preferred Qualifications
Red Hat Certified System Administrator (RHCSA)/Linux
Professional Institute Certification (LPIC)
Active Secret with SSBI or Top Secret security
clearance.
Experience managing HPE integrated BladeSystem
enclosures, including Onboard Administrator, iLO and interconnect modules
Experience managing and using Ansible automation tools
Knowledge of Git and the Git version control model
Understanding of PostgreSQL, including monitoring,
managing and maintaining replicated databases
Experience supporting, installing and configuring
enclave Fiber/Ethernet switches, HPE storage area networks (SAN)/ network
attached storage (NAS)
Experience with a ticketing system such as BMC Remedy
and/or Atlassian JIRA
Experience administering and configuring Windows Server
2012 R2 or higher
#J-18808-Ljbffr
Linux Systems Administrator
for the Global Solutions Management – Operations II (GSM-O II) contract. This contract includes the Operations, Sustainment, Maintenance, Repair and Defense of the Defense Information System Network (DISN) within the DOD Information Network (DODIN) in support of the Defense Information Systems Agency (DISA).
This role is primarily remote, but candidates must be within commuting distance to Scott AFB, IL, Ft. Meade, MD, or Ogden, UT, for on-site support.
Primary Responsibilities
Work independently to ensure the reliability,
availability and security of the solution by proactively monitoring the
system, troubleshooting, and resolving issues to ensure high availability
and continuity of operations.
Maintain configuration management and baseline control
of development, test, pre-production and production environments.
Conduct regular security scans, analyze results and
implement resolutions including testing of new hardware and software and
ensure compliance with DISA STIGs.
Operate and maintain the solution, including patching
of operating systems and COTS/FOSS/GOTS applications.
Perform and test regular backups.
Monitor and tune system and network performance,
including RHEL and VMWare systems, for optimal system availability.
Configure, manage and maintain components of the
solution (application servers, load balancers, databases, operating
systems, etc.)
Deploy systems in the Lab environment, integrate with
other systems, perform testing and validation.
Manage, track and maintain configuration items
including licenses, SSL certificates and the hardware/software baseline.
Support baseline deployments, upgrades and updates to
the production environment including the installation and configuration of
new software and hardware.
Lead planning and migration of infrastructure and
applications from the Data Center environment to the AWS cloud.
Create, maintain and implement detailed documentation
and maintain standard operating procedures.
Perform trend analysis on component failures,
network/node outages, and system performance parameters.
Interact with software and hardware vendors to evaluate
vendor products and make recommendations to purchase hardware and
software.
Work with network engineers and developers to
troubleshoot environment issues as necessary.
Escalate support issues to vendors as necessary and
coordinate resolution.
Manage access including creation and management of user
and service accounts.
Provide support on a M-F business hours schedule, also
responsible for on-call, extended hour, and weekend support as required by
mission or emergency situations.
Basic Qualifications
Bachelor's degree in Information Technology, Computer
Science or a relevant technical discipline and 5 years of relevant
experience; Additional experience, education and training may be considered
in lieu of degree.
Active Secret security clearance.
Ability to obtain Security+ certification or equivalent
DoD 8570 IAT II certification within 60 days of start date.
Experience installing, managing and maintaining RHEL 7
Linux servers in a production environment
Experience troubleshooting and managing virtualized
infrastructure in an VMware ESXi environment.
Experience deploying and managing infrastructure and
software applications in AWS
Experience applying DevOps concepts and tools to
automate repetitive tasks and ensure baseline consistency across multiple
environments
Experience installing, configuring, securing,
deploying, managing, monitoring and maintaining a variety of complex
software products across multiple environments.
Experience with the deployment of McAfee HBSS tools in
a Linux environment
Experience with scripting in Bash and experience in
other languages such as Perl or Python
Thorough knowledge of TCP/IP networking.
Application and configuration of security settings and
other IA best practices, such as those as required by DISA STIGs and SRGs
Experience supporting, installing and configuring
enclave Ethernet switches, storage area networks (SAN), and network
attached storage (NAS).
Ability to work independently in a fast-paced
environment.
Preferred Qualifications
Red Hat Certified System Administrator (RHCSA)/Linux
Professional Institute Certification (LPIC)
Active Secret with SSBI or Top Secret security
clearance.
Experience managing HPE integrated BladeSystem
enclosures, including Onboard Administrator, iLO and interconnect modules
Experience managing and using Ansible automation tools
Knowledge of Git and the Git version control model
Understanding of PostgreSQL, including monitoring,
managing and maintaining replicated databases
Experience supporting, installing and configuring
enclave Fiber/Ethernet switches, HPE storage area networks (SAN)/ network
attached storage (NAS)
Experience with a ticketing system such as BMC Remedy
and/or Atlassian JIRA
Experience administering and configuring Windows Server
2012 R2 or higher
#J-18808-Ljbffr