Systems Administrator Sea Spa & SalonSystems AdministratorGarden Grove, CA$76,000 / yearContractorDuties: Assist to install, configure and maintain computer network and systems, train users, and maintain security.
System Engineer - Cyber Security Engineering Focus EsriSystem Engineer - Cyber Security Engineering FocusRedlands, CA$120,640–$197,600 / yearYoull work closely with other system engineers, administrators, and program teams to ensure systems are built, assessed, and operated in compliance with DoD and NIST requirements. Compensation decisions and the base range for this role take into account many factors including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs.
Systems Administrator 3 - Network and Desktop Computing - FT - Day University of California, IrvineSystems Administrator 3 - Network and Desktop Computing - FT - DayOrange, CaliforniaFull timeListed among America’s Best Hospitals by U.S. News & World Report for 23 consecutive years, UCI Medical Center provides tertiary and quaternary care and is home to Orange County’s only National Cancer Institute-designated comprehensive cancer center , high-risk perinatal/neonatal program and American College of Surgeons-verified Level I adult and Level II pediatric trauma center , gold level 1 geriatric emergency department and regional burn center . *Misconduct Disclosure Requirement: As a condition of employment, the final candidate who accepts a conditional offer of employment will be required to disclose if they have been subject to any final administrative or judicial decisions within the last seven years determining that they committed any misconduct; received notice of any allegations or are currently the subject of any administrative or disciplinary proceedings involving misconduct; have left a position after receiving notice of allegations or while under investigation in an administrative or disciplinary proceeding involving misconduct; or have filed an appeal of a finding of misconduct with a previous employer.
Systems Administrator 3 - Network and Desktop Computing - FT - Day University of CaliforniaSystems Administrator 3 - Network and Desktop Computing - FT - DayIrvine, CA2025 University of California, Irvine, UCI Health, and UC Regents. Sign-up to be notified of hiring events, newly posted job opportunities, and much more.
Network Systems Administrator StratAcuity Staffing Partners IncNetwork Systems AdministratorNorco, CA$75–$82 / hourThe Junior Management Analyst will support the Program Manager and Senior Management Analyst in managing technical infrastructure supporting Corona Division operations in the areas of command leadership support, IT operations, customer operations and cyber security. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA.
System and Network Administrator Frontier StrategiesSystem and Network AdministratorCamp Pendleton, Camp PendletonThis role is responsible for maintaining, troubleshooting, and optimizing IT infrastructure, including servers, networks, SharePoint Online, and security compliance. The ideal candidate will ensure high availability, scalability, and security of all IT systems, providing continuous operational support to Camp Pendleton.
Senior Systems Administrator with VMWare and Linux Abode Techzone LLCSenior Systems Administrator with VMWare and LinuxIrvine, CAWork closely with client data center teams, including their systems, network, and security administrators, to understand their environments, gather requirements, and ensure project alignment. Design, implement, and maintain the on-premise VMware vSphere infrastructure, including ESXi hosts, vCenter Server, vSAN, and associated virtualization components.
Sr Systems Administrator I Pacific LifeCorpSr Systems Administrator INewport Beach, CA$98,010–$119,790 / yearIt is preferred this role be performed in a Pacific Life office location in Newport Beach, CA, Charlotte, NC or Omaha, NE, As a Senior Systems Administrator on the Endpoint Engineering team, you will play a key role in Pacific Life's long-term success by owning and managing endpoint operational support activities and driving initiatives that ensure end-user devices are built, deployed, and managed in a consistent, performant, and secure manner. Own the successful delivery of operational initiatives that improve the security, reliability, and compliance of the endpoint environment while maintaining an excellent end-user experience.
NewIT Systems Administrator Winchester Interconnect CorporationIT Systems AdministratorOrange, CA$80,000–$115,000 / yearDatabase Administration: 8+ years of SQL experience, ERP system support, including experience writing SQL queries, supporting SQL-based environments and manufacturing floor systems (labeling, scanning, shop floor integrations). By leveraging a deep understanding of IT best practices, the Senior Systems Administrator drives innovation, supports business goals, and mentors junior IT staff, fostering a culture of technical excellence.
Senior Linux Systems Administrator StratAcuity Staffing Partners IncSenior Linux Systems AdministratorNorco, CA$86–$115 / hourIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. The team requires an individual who can lead Linux administrators, drive automation initiatives, modernize infrastructure, and help establish enterprise-level operational practices within a disconnected, on-premises environment.
Systems Administrator III, Health Systems - Epic Bridges, HL7 Kaiser PermanenteSystems Administrator III, Health Systems - Epic Bridges, HL7Corona, CAEssential Responsibilities: Completes work assignments by applying up-to-date knowledge in subject area to meet deadlines; following procedures and policies, and applying data and resources to support projects or initiatives; collaborating with others, often cross-functionally, to solve business problems; supporting the completion of priorities, deadlines, and expectations; communicating progress and information; identifying and recommending ways to address improvement opportunities when possible; and escalating issues or risks as appropriate. Some of the unique challenges this position will face include analyzing clinical and business operations and investigating user preferences; prioritizing & implementing requested system changes & updates; serving as a liaison between end users, third parties, and Epic implementation staff.
Systems Administrator III, Health Systems - Certified in Epic Resolute Hospital Billing preferred Kaiser PermanenteSystems Administrator III, Health Systems - Certified in Epic Resolute Hospital Billing preferredCorona, CAEssential Responsibilities: • Completes work assignments by applying up-to-date knowledge in subject area to meet deadlines; following procedures and policies, and applying data and resources to support projects or initiatives • Collaborating with others, often cross-functionally, to solve business problems • Supporting the completion of priorities, deadlines, and expectations • Communicating progress and information • Identifying and recommending ways to address improvement opportunities when possible • Escalating issues or risks as appropriate. Provides first and second level support for enterprise systems and systems in one or more additional IT domains by: • Diagnosing, troubleshooting, and resolving complex incidents to minimize system issues • Supporting stability, availability, and performance of enterprise systems (e.g., systems, applications, network, databases, storage, security) by monitoring systems to identify problems, trends, and opportunities for improvement.
Systems & Network Administration Quinn CompanySystems & Network AdministrationCity of Industry, California$105,000–$115,000 / yearFull timeWe’re seeking a Systems & Network Administrator to oversee servers, network hardware, and connectivity solutions while ensuring optimal uptime, security, and scalability. Bachelor’s degree in Computer Science or related field and 5+ years of experience administering networks and servers (50+ servers), or .
Senior Systems Administrator Anduril Industries IncSenior Systems AdministratorCosta Mesa, CA$146,000–$194,000 / yearThis third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
IT Systems Administrator -4083IT Systems AdministratorNewport Beach, CARemoteThe ideal candidate will have a minimum of 2 years of hands-on technical experience across Computer Desktop Support including Windows 10/11, Data Backup, Basic Network Concepts, AntiVirus/Anti-Malware Applications, Microsoft 365 Office Applications, Active Directory, and Understanding of VOIP Concepts. LOCATION REQUIREMENT: This role requires candidates to live in California within commuting distance of customer locations throughout Los Angeles/Orange/Riverside/San Bernardino Counties.
NewSystems Administrator E LogicSystems AdministratorCamp Pendleton, CAEnsure accurate, efficient image flow from acquisition modalities (CT, MRI, X-ray, Ultrasound, Nuclear Medicine, Mammography, Dexa, Fluoroscopy) to storage, retrieval, and distribution. Oversee database health, monitor network bandwidth, ensure fast image load times, and maintain reliable image routing to tele-radiology vendors.
MSP Systems Administrator - On-Site in Huntington Beach CAL IT GroupMSP Systems Administrator - On-Site in Huntington BeachHuntington Beach, CaliforniaTo succeed, you should have a strong problem-solving mindset, deep technical expertise across server and network environments, and the ability to communicate clearly with both technical peers and non-technical clients. -Administer and maintain Windows Server environments including Active Directory, Group Policy, DNS, DHCP, and file/print services across multiple client environments.
Retail Systems Support Administrator BootBarn.comRetail Systems Support AdministratorIrvine, CAProvide ongoing technical support to system users and customer support staff to maintain and enhance overall system performance including retail store interruptions related to hardware and software configurations. Resolve all Retail systems technical issues via phone support and help desk tickets from our nationwide Retail stores including POS registers, reporting, and applications.
IT Systems Administrator AstroForgeIT Systems AdministratorSeal Beach, CaliforniaITAR Requirements To conform to U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the U.S.,protected individual as defined by ITAR (22 CFR §120.15) or eligible to obtain the required authorizations from the U.S. Department of State. Design, deploy, and maintain corporate network infrastructure including switches, firewalls, VLANs, VPNs, and wireless access points supporting both office and lab environments.
IT Systems Administrator Science Applications International CorpIT Systems AdministratorAnaheim, CARemote$80,001–$120,000 / yearBachelor''s degree in Information Technology, Computer Science, Information Systems, or a related field with a minimum of 4 years of relevant systems administration or related technical experience; OR In lieu of a degree, a minimum of 6 years of systems administration or closely related technical experience supporting enterprise infrastructure, servers, applications, or IT operations. Performs high-level, day-to-day operational maintenance, support, and upgrades for Veeam Backup and Replication, Schedules server and workstation backups and maintains the backups in accordance with established IT policies and procedures and retention scheduled.
SYSTEMS ADMINISTRATOR South Coast Children's Society IncSYSTEMS ADMINISTRATORColton, CA$90,000–$110,000 / yearTechnical Expertise: • Demonstrates strong problem-solving and diagnostic abilities • Applies cybersecurity practices to protect organizational data • Explains technical concepts clearly to non-technical users • Ensures timely completion of tasks and maintains system reliability • Responds effectively to changing technology needs and priorities. • Administer and maintain Windows-based servers, Active Directory, and cloud services (e.g., Microsoft 365 / Azure AD) • Manage user accounts, permissions, group policies, and role-based access controls • Monitor system performance, uptime, and capacity; proactively address issues • Perform routine system maintenance, patching, updates, and backups.
IT Systems Administrator cFive SolutionsIT Systems AdministratorAnaheim, CaliforniaOur exciting Case Management product is an Enterprise business application that includes workflow processes, case and document management, and extensive reporting with a focus on criminal justice business knowledge. Our future depends upon hiring and retaining great talent who are looking to use the latest technology to create state of the art products for our public safety and social services customers.
Systems Administrator MeriplexSystems AdministratorNorwalk, CaliforniaExerts up to 50 pounds of force occasionally, a negligible amount of force frequently, and/or constantly having to lift, carry, push, pull or otherwise move objects, including the human body. The person in this position is responsible for an array of mid-level issues ranging from basic firewall administration to troubleshooting Azure subscriptions.
Operating Systems Administrator - Open to Current CSULB Employees Only California State UniversityOperating Systems Administrator - Open to Current CSULB Employees OnlyLong Beach, CA$6,755–$9,458Serve as administrator for the campus Oracle database servers, and software - Monitor and improve performance of the oracle environment and databases by proactively monitoring server resources. Long Beach blends coastal relaxation with urban vibrancy, offering miles of beaches, year-round sunshine, a thriving arts and food scene, and convenient access to both Los Angeles and Orange County.
Systems Administrator Meriplex SolutionsSystems AdministratorNorwalk, CA$60,000–$70,000 / hourPart timeExerts up to 50 pounds of force occasionally, a negligible amount of force frequently, and/or constantly having to lift, carry, push, pull or otherwise move objects, including the human body. The person in this position is responsible for an array of mid-level issues ranging from basic firewall administration to troubleshooting Azure subscriptions.
Engineering Solutions Systems Administrator TeamCenter Anduril Industries IncEngineering Solutions Systems Administrator TeamCenterCosta Mesa, CA$146,000–$194,000 / yearTo ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process. This third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources.
Systems Support Administrator FirstService CorpSystems Support AdministratorIrvine, CA$26–$28 / hourRequesting Information About the AEDT - NYC Local Law 144: Candidates who reside in New York City and are subject to NYC Local Law 144 may request information about the AEDT, including details on the type of data collected, the sources of such data, and our data retention policies. This role provides technical support to managers and users, ensures compliance with company and departmental policies, and supports operational and systems-related training initiatives.
Systems Administrator - Riverside CarvanaSystems Administrator - RiversideRiverside, CA$70,000–$75,000 / yearToday, with 4 million retail customers and counting, Carvana is both the fastest-growing and the most profitable public automotive retailer, and we're just getting started. In return for your hard work, you'll have an opportunity to work at one of the fastest growing and creative technology companies around, as well as help us promote a life-changing product and develop a world-class team every day.
Systems Administrator - Riverside Carvana CoSystems Administrator - RiversideRiverside, CA$70,000–$75,000 / yearToday, with 4 million retail customers and counting, Carvana is both the fastest-growing and the most profitable public automotive retailer, and we're just getting started. In return for your hard work, you''ll have an opportunity to work at one of the fastest growing and creative technology companies around, as well as help us promote a life-changing product and develop a world-class team every day.
Systems Administrator IntegrisSystems AdministratorCosta Mesa, CARemoteAs a nationally recognized Best Places to Work and a leader in future-ready managed services , we’re redefining how businesses experience IT. Provide support and maintenance of servers, network devices, and associated hardware and software systems for clients.
IT Network Administrator I Shimano IncIT Network Administrator IIrvine, CAMaintain professional and technical knowledge by attending educational workshops, reviewing professional publications, researching new technology and trends, and completing any assigned training. companies: Manage Active Directory to include: User account creation, modification, and deletion, Security groups, group policy, and audits.
NewNetwork Administrator AMVAC Chemical CorporationNetwork AdministratorIrvine, CAThe Network Administrator is responsible for the day-to-day administration, maintenance and support of the organization's network infrastructure, including LAN, WAN, SD-WAN, and telecommunications systems across multiple sites. Administer, monitor, and maintain enterprise network infrastructure including routers, switches, firewalls, wireless access points, and SD-WAN across all organizational sites.
Database Administrator (SQL) /System Administrator Frontier StrategiesDatabase Administrator (SQL) /System AdministratorOceanside, CaliforniaPerform daily database maintenance tasks including backups, restores, recovery model management, DBCC commands, index and statistics maintenance, and capacity checks. This hybrid position supports both system administration and database operations equally, ensuring high availability, performance, and security across servers and SQL environments.
System Administrator BootBarn.comSystem AdministratorIrvine, CAThis will involve using best practices for deployment and management of systems as well as responding to and diagnosing problems through discussion with support teams and end users, including problem recognition, research, isolation, resolution, documentation and follow-up steps. The Systems Administrator primarily performs monitoring, maintenance, installation, upgrades, and end-user support on Windows Domain servers and related hardware & software infrastructure across multiple sites.
System Administrator Tata Consultancy Services LtdSystem AdministratorCorona, CA$110,000–$135,000 / yearManaged but not limited to Google Workspace, Intune, JamF Pro, Jira, Slack, Azure Active Directory, 1Password, AWS VPN, Zoom, and Moveworks to streamline IT operations and enhance user accessibility across the organization. Google Workspace, Intune, JamF Pro, Jira, Slack, Azure Active Directory, 1Password, AWS VPN, Zoom, and Moveworks to streamline IT operations and enhance user accessibility across the organization.
IS System Administrator University Health Services IncIS System AdministratorTemecula, CASouthwest Healthcare is comprised of five acute care hospitals and several non-hospital access points, including: Corona Regional Medical Center, Palmdale Regional Medical Center, Southwest Healthcare Rancho Springs Hospital, Southwest Healthcare Inland Valley Hospital and Temecula Valley Hospital, Temecula Valley Day Surgery, A+ Urgent Care Centers, Apex Heart Specialists and Riverside Medical Clinics. Qualifications Southwest Healthcare is owned and operated by subsidiaries of Universal Health Services, Inc. (UHS)) a King of Prussia, PA-based company, one of the nation's largest and most respected providers of hospital and healthcare services, Universal Health Services, Inc. (NYSE: UHS) has built an impressive record of achievement and performance, growing since its inception into a Fortune 500 corporation.
Senior IT Systems and Automation Engineer Dream Big. Build FastSenior IT Systems and Automation EngineerHacienda Heights, CaliforniaIn return you will be well-compensated for your expertise, with a path to long-term impact and you have the opportunity to be part of building a culture of self-service that empowers employees and reduces operational friction. Moon is seeking a highly intelligent and self-directed Senior IT Systems & Automation Engineer who will serve as a key individual contributor across our business systems, applications, and infrastructure.
Sr Systems Engineer - Azure Axos BankSr Systems Engineer - AzureIrvine, CAOwn and administer Azure Virtual Network topology including hub-spoke design, VNets, subnets, NSGs, route tables, and VNet peering aligned to bank security requirements. Engineer and Technology Architect on changes to hybrid identity topology, Entra tenant configuration, and Azure AD Connect sync rules - this is a genuine peer relationship with shared architectural ownership, not a sign-off chain.
Senior SAP Basis Administrator ITT Inc. - English USSenior SAP Basis AdministratorIrvine, California$115,100–$171,900 / yearFull timeKnowledge in supporting solutions around SAP ecosystems and a technology stack of S/4 HANA, SAP Enterprise Core Component (ECC), Business Intelligence (BI), Enterprise Portal (EP), SAP HANA, Suite on HANA, BW on HANA, SLD, Process Integration (PI/PO), Fiori, CRM, EWM, LVM, Solution Manager, BOBJ BI/BODS, GRC, Content Server, JAVA systems etc. For a person to be successful in this role, they will need to be highly driven, able to balance many active priorities, detail oriented, planful, comfortable in searching out and addressing ambiguity, able to consistently deliver results to achieve intended business outcomes, persists with a naturally curious and highly accountable mindset, and approaches situations in a thoughtful and process-oriented manner.
Senior SAP Basis Administrator ITT IncSenior SAP Basis AdministratorIrvine, CA$115,100–$171,900 / yearKnowledge in supporting solutions around SAP ecosystems and a technology stack of S/4 HANA, SAP Enterprise Core Component (ECC), Business Intelligence (BI), Enterprise Portal (EP), SAP HANA, Suite on HANA, BW on HANA, SLD, Process Integration (PI/PO), Fiori, CRM, EWM, LVM, Solution Manager, BOBJ BI/BODS, GRC, Content Server, JAVA systems etc. For a person to be successful in this role, they will need to be highly driven, able to balance many active priorities, detail oriented, planful, comfortable in searching out and addressing ambiguity, able to consistently deliver results to achieve intended business outcomes, persists with a naturally curious and highly accountable mindset, and approaches situations in a thoughtful and process-oriented manner.
NewSenior Systems Engineer Prescient EdgeSenior Systems EngineerRiverside, CAPersonnel will deploy to sites including CAMOC in Aguadilla, Puerto Rico, and other CONUS and OCONUS locations to perform installation, troubleshooting, integration, and sustainment of C4I, AMOSS, ISR, and telecommunications systems. This role is responsible for evaluating, analyzing, and integrating C4I communications systems and infrastructure, ensuring interoperability, performance, and reliability across AMOSS, ISR, and telecommunications environments in alignment with mission priorities and operational requirements.
Microsoft SQL Sr DBA Mercury Insurance CompanyMicrosoft SQL Sr DBABrea, CA$94,458–$179,048 / yearPerform complex physical and logical database engineering and administration activities including database related project management, installation, administration, performance management, monitoring, backup, restoring, and change management of company's mission critical RDBMS systems under minimal direction or supervision. Utilize SQL language extensively to design complex database performance solutions and manage large database related projects during tuning and database upgrades.
Microsoft SQL Sr DBA Mercury Insurance Services, LLCMicrosoft SQL Sr DBABrea, California$123,078–$170,941 / yearPerform complex physical and logical database engineering and administration activities including database related project management, installation, administration, performance management, monitoring, backup, restoring, and change management of company’s mission critical RDBMS systems under minimal direction or supervision. Utilize SQL language extensively to design complex database performance solutions and manage large database related projects during tuning and database upgrades.
Senior Systems Analyst, Cost & Receipt Accounting Anduril Industries IncSenior Systems Analyst, Cost & Receipt AccountingCosta Mesa, CA$146,000–$194,000 / yearWithin CorpOS lies a suite of digital software solutions aimed at solving the problems for our growth, finance, people teams that interplays heavily with our ArsenalOS solutions that enable Anduril's engineering, production and sustainment departments. Sub-ledger Reconciliation: Direct the technical resolution of variances between the Receipt Accounting sub-ledger and the General Ledger, ensuring "Received But Not Invoiced" (RBNI) reports are accurate and automated.
HPC Systems Engineer, Modeling & Simulation Anduril Industries IncHPC Systems Engineer, Modeling & SimulationCosta Mesa, CA$132,000–$198,000 / yearIn this role, you will maintain and troubleshoot scientific computing systems, support Linux/Unix-based infrastructure, help manage storage and compute resources, and partner with analysts to resolve issues across code, nodes, queues, storage, and user workflows. You will help administer and improve the on-prem HPC systems, scientific code environments, storage, runtime workflows, and tooling that enable analysts to run complex modeling and simulation workloads.
Senior Data & Systems Analyst, EHS Anduril Industries IncSenior Data & Systems Analyst, EHSCosta Mesa, CA$86,000–$114,000 / yearThis role serves as the primary technical resource for the EHS department-owning dashboards, developing the in-house EHS management system, administering the EHS digital toolset, and ensuring data integrity across all safety data streams. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Systems Admin StratAcuity Staffing Partners IncSystems AdminAnaheim, CA$55–$65 / hourIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA.
Senior Database Administrator III (DBA) – Secret Clearance| Riverside, CA Cambridge International SystemsSenior Database Administrator III (DBA) – Secret Clearance| Riverside, CARiverside, CaliforniaThis role is responsible for managing, maintaining, and optimizing database environments that support C4I systems, AMOSS, ISR platforms, and associated mission applications, ensuring data availability, integrity, security, and performance in alignment with operational requirements. As a Senior Database Administrator, you will play a critical role in designing, building, securing, and operating software solutions that support mission success and operational excellence across Federal Government organizations.
Senior Database Administrator III (DBA) - Secret Clearance| Riverside, CA Cambridge International Systems, Inc.Senior Database Administrator III (DBA) - Secret Clearance| Riverside, CARiverside, CA$111,000–$160,000 / yearThis role is responsible for managing, maintaining, and optimizing database environments that support C4I systems, AMOSS, ISR platforms, and associated mission applications, ensuring data availability, integrity, security, and performance in alignment with operational requirements. As a Senior Database Administrator, you will play a critical role in designing, building, securing, and operating software solutions that support mission success and operational excellence across Federal Government organizations.
AMOC Senior Database Administrator III Planned Systems International, Inc.AMOC Senior Database Administrator IIIRiverside, CAThis role is responsible for managing, maintaining, and optimizing database environments that support C4I systems, AMOSS, ISR platforms, and associated mission applications, ensuring data availability, integrity, security, and performance in alignment with operational requirements. Personnel will deploy to sites including CAMOC in Aguadilla, Puerto Rico, and other CONUS and OCONUS locations to perform installation, troubleshooting, integration, and sustainment of C4I, AMOSS, ISR, and telecommunications systems.