Senior System Administrator-Subject Matter Expert

4 hours ago


San Antonio, Texas, United States Leidos Full time
Job Description

The Digital Modernization Sector within Leidos is seeking a Senior System Administrator-Subject Matter Expert to support the DoD Mobility Classified Capability (DMCC) program as part of GSM-O II in San Antonio, TX.

We're seeking a candidate experienced and proficient with Windows server or Linux server operations, sustainment, and management activities to help ensure secure, reliable, and uninterrupted availability of the DoD's secure mobile device capability service.

As a Senior System Administrator subject matter expert (SME), the candidate must be technically strong in both Network Engineering and Windows Operating Systems.

You'll work as part of a 24x7 Network Operations team responsible for managing an infrastructure comprised of a variety of servers, network appliances, and applications supporting voice and data services.

Key Responsibilities:

  • Provide expert technical knowledge to monitor and maintain an enterprise services environment consisting of Windows servers, Red Hat Enterprise Linux servers, and network appliances.
  • Assist mission partners with mobile device VPN connectivity debugging, user account and device management, and troubleshooting system/service access issues.
  • Implement and deploy scripting or automation tools to optimize processes and improve the efficiency of the environment - PowerShell, Python, Bash, Ansible, Puppet.
  • Be a point of escalation for lower-level technicians and higher difficulty issues.
  • Lead configuration updates and maintenance activities to patch, secure, and maintain systems.
  • Respond to, analyze, and resolve issues that degrade system or network performance to minimize downtime.
  • Use advanced systems and networking knowledge to develop solutions for complex technical issues.
  • Create and update documentation for common issues and processes, technical drawings, and related artifacts to contribute to the team's knowledge base.
  • Collaborate with other technical experts and external stakeholders to provide engineering solutions for design changes and upgrades.
  • Mentor, lead, and train junior level team members.
  • Work non-standard hours (night, weekends, holidays) in support of 24x7x365 operations and sustainment environment.

Requirements:

  • Bachelor's degree and 8 years of related experience or Master's degree and 6 years of related experience. Additional experience, education and training may be considered in lieu of degree.
  • Active DoD SECRET clearance.
  • DoD-8570 IAT Level 2 certification (Security+ CE) within 6 months of hire date.
  • Extensive experience troubleshooting Windows OS or Linux OS, network, and domain related issue.
  • Minimum of 5 years experience working as a System Administrator; extensive experience performing system administration tasks - installing, maintaining, monitoring, recovering, rebuilding, upgrading, patching.
  • Minimum of 2 years experience working with Microsoft System Administration including lodging scripting ,Group Policy objects (GPO's) and Windows servers roles including DHCP, DNS and active directory.
  • Minimum of 2 years experience with SAN storage.
  • Extensive experience researching complex technical solutions beyond internal SOPs.
  • Experience working with multiple technologies and open to learning new technologies.
  • Fluent understanding of networking concepts such as OSI Model, LAN/WAN, IPv4/IPv6, subnetting and VLANs.
  • Experience maintaining systems and services in an air-gapped environment.
  • Ability to demonstrate good judgement, professionalism, and communicate clearly (verbal and written).
  • Highly proficient problem solving, critical thinking, and analytical skills.

Preferred Qualifications:

  • Experience with VMWare - ESX/ESXi, vCenter, vSphere.
  • Experience with AD, SCCM, SQL, MySQL, SELinux, DNS, Group Policy management.
  • Experience configuring and maintaining network devices - switches, routers, firewalls, VPNs.
  • Knowledge of security policies such as DISA STIGS and general vulnerabilities management.
  • Certifications with major system vendors such as Microsoft, Red Hat, VMware, Cisco, Juniper, or Aruba.


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Battalion Mission Command Subject Matter ExpertJoin our team of experts at Applied Training Solutions, LLC as a Battalion Mission Command Subject Matter Expert. As a key member of our team, you will play a critical role in supporting military and government service personnel in the design, planning, coordination, synchronization, preparation, and execution...


  • San Antonio, Texas, United States Dawson Full time

    Job Title: Emergency Management Subject Matter ExpertJob Summary:We are seeking a highly skilled Emergency Management Subject Matter Expert to join our team at Dawson. As a key member of our team, you will be responsible for developing and implementing training support packages, courseware, and training products for Army EM courses.Key...


  • San Antonio, Texas, United States Dawson Full time

    Job Title: Emergency Management Subject Matter ExpertWe are seeking a highly skilled Emergency Management Subject Matter Expert to join our team at Dawson. As an Emergency Management Subject Matter Expert, you will be responsible for providing expert advice and guidance on emergency management practices and procedures.Key Responsibilities:Develop and...


  • San Antonio, Texas, United States GOLDEN WOLF LLC Full time

    Job Title: Energy Program Subject Matter ExpertGoldenWolf LLC is seeking a highly skilled Energy Program Subject Matter Expert to join our team. As a key member of our Engineering Operations team, you will be responsible for providing comprehensive energy management and support across various projects.Key Responsibilities:Provide energy manager and energy...


  • San Antonio, Texas, United States Pet Emergency Center Full time

    Job SummaryASI is seeking a qualified individual to support an anticipated contract with the US Air Force (USAF) as a T-6A Subject Matter Expert. This is a full-time, remote position that requires an active SECRET clearance.The RoleApply expert-level knowledge of T-6A aircraft systems and operations, and USAF flying regulations and procedures to create,...


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Job Description:As a Mass Casualty Decontamination Subject Matter Expert, you will play a critical role in establishing and operating an Incident Command System (ICS) for each Mass Casualty Decontamination (MCD), Reconnaissance and Surveillance (R&S), Urban Search & Rescue (US&R), and Civil Support Teams (CST) training event and exercise. You will be...


  • San Antonio, Texas, United States GoldenWolf, LLC Full time

    Job SummaryWe are seeking a highly skilled Sustainability Program Manager Subject Matter Expert to join our team at GoldenWolf, LLC. As a key member of our sustainability team, you will be responsible for supporting the development and implementation of sustainable practices across our organization.Key ResponsibilitiesDevelop and implement sustainable...


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Job Title: Mission Command Subject Matter Expertise SpecialistWe are seeking a highly skilled Mission Command Subject Matter Expertise Specialist to join our team at Applied Training Solutions, LLC. As a key member of our team, you will be responsible for providing expert-level support in mission command principles, military decision-making processes, and...


  • San Antonio, Texas, United States GOLDEN WOLF LLC Full time

    Job DescriptionGolden Wolf LLC is seeking a highly skilled Sustainability Program Manager Subject Matter Expert to join our team. As a key member of our organization, you will play a critical role in supporting the development and implementation of our sustainability initiatives.Key Responsibilities:Develop and implement sustainability programs and...


  • San Antonio, Texas, United States VIP Staffing Full time

    Job Title: Senior Systems AdministratorWe are seeking a highly skilled Senior Systems Administrator to join our IT team. As a key member of our team, you will be responsible for the maintenance, configuration, and reliable operation of computer systems, network servers, workstations, and networking equipment.Key Responsibilities:Maintain and configure...


  • San Antonio, Texas, United States University Health System- San Antonio Full time

    Senior Business Analyst, Information SystemsJob Summary: We are seeking a highly experienced Senior Business Analyst to join our Information Systems team at University Health System- San Antonio. The ideal candidate will have a strong background in healthcare and experience working with claims and clinical data.Key Responsibilities:Collaborate with business...


  • San Antonio, Texas, United States Power3 Solutions and Partnering Companies Full time

    We empower our national security customers to make informed decisions by providing cutting-edge IT solutions that drive mission success.Our team of experts in high-performance computing, SIGINT research and analysis, software and systems development, and mission resilience work together to deliver innovative solutions that meet the evolving needs of our...


  • San Antonio, Texas, United States Booz Allen Hamilton Full time

    Job Summary:As a Senior System Administrator at Booz Allen Hamilton, you will play a critical role in ensuring the functionality and availability of our current infrastructure. With a background in Windows OS, you will help clients overcome tough challenges through monitoring and performance management. Your knowledge will be vital in identifying problem...


  • San Antonio, Texas, United States University Health System- San Antonio Full time

    Job Title: Senior Business Analyst, Information SystemsJob Summary:The Senior Business Analyst, Information Systems will play a key role in supporting IS application development teams and mapping of claims and clinical data. This position will be seen as a change leader across University Health System- San Antonio, leading and providing guidance to Health...


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Job Title: Mission Command Subject Matter ExpertiseWe are seeking a highly skilled Mission Command Subject Matter Expertise professional to join our team at Applied Training Solutions, LLC.Job Summary:The successful candidate will assist military and government service personnel in the preparation and execution of training/exercise events. They will provide...


  • San Antonio, Texas, United States Govcio LLC Full time

    Job Title: Senior Systems AdministratorGovCIO is seeking a highly skilled Senior Systems Administrator to join our team. As a key member of our IT infrastructure team, you will be responsible for the installation, configuration, and maintenance of computer systems, networks, and related computing environments.Key Responsibilities:Plan, coordinate, and...


  • San Antonio, Texas, United States ASTRION, INC. Full time

    Job Title: Senior Systems AdministratorAstrion, Inc. is seeking a highly skilled Senior Systems Administrator to join our team. As a key member of our C3I and Infrastructure Division, you will be responsible for providing enterprise support to over 110 active Air Force, Air National Guard (ANG), and Air Force Reserve installations and bases.Key...


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Job Title: Mission Command Subject Matter Expertise SpecialistWe are seeking a highly skilled Mission Command Subject Matter Expertise Specialist to join our team at Applied Training Solutions, LLC. As a key member of our team, you will be responsible for assisting military and government service personnel in the design, planning, coordination,...


  • San Antonio, Texas, United States NetImpact Strategies Full time

    Job Title: Senior Systems AdministratorWe are seeking a highly skilled Senior Systems Administrator to join our team at NetImpact Strategies. As a key member of our IT team, you will be responsible for managing and maintaining our server operating systems, ensuring the security, integrity, and availability of our infrastructure platforms.Key...


  • San Antonio, Texas, United States Applied Training Solutions LLC Defunct Full time

    Job SummaryWe are seeking a highly skilled Mission Command Subject Matter Expert to join our team at Applied Training Solutions, LLC. As a key member of our team, you will provide critical support to military and government service personnel in the preparation and execution of training and exercise events.Key ResponsibilitiesAssist in the development of...