Senior Systems Administrator (Tier-3) — On-Site, Public Trust
ASRC Federal
ASRC Federal is looking for a Senior Systems Administrator in San Antonio, TX, to provide 24/7 operations support. Candidates should have a strong technical background with at least 8 years of experience in Information Technology, alongside the ability to work on-site at Ft Sam Houston. The ideal applicant will possess expertise in managing services such as Active Directory and data encryption, and must be a U.S. Citizen eligible for a Public Trust clearance. #J-18808-Ljbffr ASRC Federal
- ...Federal is currently seeking a Senior Systems Administrator - Tier-2 Level to support... ...with ability to obtain a Public Trust. Must be willing and able... ...position will require on-site occupancy at or near the Ft... ...Enterprise Operations (Tier 3). Provide de‑escalation path...SeniorWebsiteRemote workFlexible hoursShift work
- ...furthering missions in space, public health and defense. As an... ...to obtain a Public Trust. Summary : This contract... ...position will require on-site occupancy at or near the Ft... ...We are currently seeking a Senior Systems Administrator - Tier-3 Level to support upcoming...SeniorWebsiteContract workFor contractorsWork experience placementWork at officeRemote workFlexible hoursShift work
- ...furthering missions in space, public health and defense. As... ...seeking a Junior Systems Administrator - Tier-2 Level to support... ...will require on-site occupancy at or near the... ...Enterprise Operations (Tier 3). Provide the de-... ...and maintain Public Trust. Must successfully...WebsiteContract workFor contractorsWork experience placementRemote workFlexible hoursShift work
- ASRC Federal in San Antonio, TX, seeks an Intermediate Systems Administrator with expertise in Active Directory and data encryption. This... ...role requires U.S. Citizenship and the ability to obtain a Public Trust. Responsibilities include analyzing, validating, and configuring...Website
- ...Description Position: Junior Systems Administrator - Tier‑2 Level (San Antonio, TX)... ...required. Work Arrangement: On‑site at or near Ft Sam Houston;... ...unresolved issues to Tier 3 operations and provide the... ...U.S. Citizen with Public Trust clearance. Successful completion...WebsiteWork experience placementRemote workFlexible hoursShift work
- ASRC Federal is seeking a Junior System Administrator in San Antonio, TX. The position requires on-site support and responsibilities including analyzing and maintaining... ...in related fields and the ability to obtain Public Trust clearance. Benefits include health care, 401(k...WebsiteFlexible hours
- ASRC Federal is looking for a Senior Systems Administrator - Tier-2 Level in San Antonio, TX. This role includes managing personnel and providing continuous IT support, ensuring the maintenance of enterprise-level systems. The ideal candidate must be a U.S. Citizen with...SeniorWebsiteFlexible hours
- ...furthering missions in space, public health and defense. As an... ...Work ( Position : Junior System Administrator, Tier-3 Level Support Services.... ...Location : San Antonio, TX (On-Site.) Clearance : U.S. Citizen... ...ability to obtain a Public Trust. Summary: This contract...WebsiteContract workFor contractorsWork experience placementWork at officeRemote workFlexible hoursShift work
$50k
...responsible for activities related to Systems Administration and the integration with server operating... ...remote, the position may require on-site visits as needed. Responsibilities Administer... ...various customer accounts. Provides tier 2/3 technical support and serves as...SeniorWebsiteBank staffLocal areaRemote workFlexible hours$75k - $113.79k
...Job Title Systems Administrator III Clearance Required Secret Work Location... ...schema extensions, sites and services, domains and trusts, Group Policy Objects (GPO... ...in DoDI 8520.02, “Public Key Infrastructure (PKI)... ...reliability and uptime. Provide Tier 3 support for Exchange...WebsiteContract workWork experience placementFlexible hours- A federal IT solutions provider is seeking a Tier 3 Systems Administrator to support a large-scale IT environment. This role involves managing enterprise services, ensuring compliance with security standards, and providing advanced support for cloud technologies. Ideal...Remote job
- ASRC Federal is hiring a Junior Systems Administrator in San Antonio, TX, to provide critical 24/7 support for operational needs. The successful... ...strong technical skills, a willingness to travel, and a Public Trust clearance. Competitive pay and benefits are offered,...Website
$80 per hour
...search for a contract Senior Network Administrator in San Antonio, Tx.... ...service providers, and site support personnel to... ...including ticketing systems, monitoring, documentation... ...ID, Intune, zero trust architectures, and modern... ...working in public sector, higher education...SeniorWebsiteWeekly payContract workRemote work- ...Alesig's single On-Site Point of Contact and... ..., technical, and administrative matters. Duties & Responsibilities... ...for the Con... The Senior Software Engineer (... ...) Decision Support System (ANG DSS) portfolio... ...System Engineer, Tier II will be... .... Qualifications: 3+ years of ... The...SeniorWebsiteContract work
- VivSoft Technologies is seeking a Senior Contract Analyst in San Antonio, TX to manage acquisition and procurement activities for the... ...have at least 10 years of related experience and an active Public Trust clearance. A Bachelor's degree in finance, accounting, or law...SeniorContract work
- University Health is seeking an experienced Senior Systems Administrator with deep PeopleSoft expertise to... ...serve as a technical authority and trusted advisor, providing hands‑on system... ...development Stable, mission‑driven public healthcare environment Opportunities...Senior
$48k
Senior Administrative Associate, Department of Public Health - College for Health, Community and Policy (HCAP) Location: San... ...) is a nationally recognized, top-tier public research university that... ...logistical planning, setup, and on-site support to ensure smooth, well-organized...SeniorWebsiteFull timeTemporary workPart timeApprenticeshipWork experience placementWork at officeRemote work$70k - $109.97k
Description Job Title: Systems Administrator II Clearance Required: Secret Work Location... ...usage and performance. Provide Site Administrator support and Enterprise monitoring... ..., escalate to Enterprise Operations (Tier 3). Provide the de-escalation path back...WebsiteContract workWork experience placementRemote workFlexible hours- ASRC Federal is seeking an Intermediate Systems Administrator to support operations in San Antonio, TX. This role involves 24/7 operational support and requires candidates to work on-site at Ft Sam Houston. Responsibilities include troubleshooting server issues, managing...Website
$77.5k - $140.9k
...world. Government & Public Sector – Service Delivery... ...Compliance & Resiliency Senior Analyst From strategy... ..., laaS, AI/ML, an Zero Trust Architecture (ZTA)... ...and direction to the on-site GPS SRC&R consultants in... ...related field A minimum of 3 years of related work...SeniorWebsiteWork experience placementSummer holidayLocal areaFlexible hours- ...an Accounting Services Senior! Join our Client Accounting... ...businesses, build trusted relationships, and provide... ...for the CPA exams Recent public accounting experience... ...Accounting Services Experience) 3+ years total experience... ...This role will be off-site regularly for face-to-...SeniorWebsiteFull time
$67k - $136.8k
Government and Public Sector - Service Delivery Center - Microsoft Senior BA Location: San Antonio Other locations: Primary Location Only Date: May 8, 2026 Requisition... ...may be required to client, EY, or contractor sites. Candidates should be willing to travel 20-30% or...SeniorWebsiteFor contractorsFlexible hours$67k - $136.8k
Opportunity Senior Business Analyst in EY’s Government & Public Sector practice, within the Service Delivery Center. Responsibilities include advising U.S. government... .... Work may be required at client, EY, or contractor sites, with travel of 20‑30% or more. Preferred...SeniorWebsiteFor contractorsFlexible hours$67k - $136.8k
...Service Delivery Center is a core component of the Government & Public Sector practice (GPS). Our Digital Engineering practice is helping... ...may be required to be completed at client, EY and/or contractor sites. Our goal is to assign professionals to projects within a...SeniorWebsiteFor contractorsSummer holidayWork at officeFlexible hours$67k - $136.8k
...Government and Public Sector – Service Delivery Center – Microsoft Senior Developer Location: San Antonio Other locations:... ...modeling, and revision control systems Maintain a strong understanding... ...at client, EY, and/or contractor sites. Candidates should be willing to...SeniorWebsiteFor contractorsSummer holidayLocal areaFlexible hoursNight shift- ...everything we do—from the systems we design to the... ...bonuses for senior-level roles... ...will serve as a trusted technical leader,... ...in construction administration. Conduct site visits and field... ...direct hires. Top-tier salary with 100%... ...design experience 3+ years of project...SeniorWebsiteFull timeLocal areaRemote workWork from homeRelocation packageFlexible hours
- ...Job Posting Maximus is a trusted federal partner supporting mission... ...security, defense, and public service delivery. Recent contract... ...various UI elements, optimizing system navigation practices and elements... ...~ Must be able to report on-site in San Antonio, TX up to five...SeniorWebsiteContract work
$111.16k - $150.39k
Senior Network Engineer Position Summary: The... ...designs, and Zero‑Trust-aligned network segmentation... ...requirements, and site readiness in... ...Layer 2/Layer 3 architectures, including... ...factors. Provide Tier‑3 engineering... ...security‑sensitive systems. Participate in transition...SeniorWebsiteFor contractorsRemote work- ...around San Antonio, TX Clearance Required: Public Trust (ADP/IT-II) or Tier 3 Investigation (NACLC) The Endpoint System Admin is responsible for architecting, developing... ...Matrices) 1) Microsoft Certified: Azure Administrator Associate or Windows Server Hybrid Administrator...
- ...prominent educational institution in San Antonio is seeking a Systems Administrator to manage enterprise Linux systems with an emphasis on... ...primarily remote but requires local candidates for occasional on-site visits. The ideal candidate will have at least 5 years of IT...SeniorWebsiteRemote jobLocal area
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Senior Systems Administrator (Tier-3) — On-Site, Public Trust. Be the first to apply!
- server administrator San Antonio, TX
- IT administrator San Antonio, TX
- systems administrator San Antonio, TX
- microsoft systems administrator San Antonio, TX
- remote systems administrator San Antonio, TX
- enterprise administrator San Antonio, TX
- computer systems administrator San Antonio, TX
- system admin San Antonio, TX
- application system administrator San Antonio, TX
- IT infrastructure administrator San Antonio, TX

