Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Senior Systems Administrator

$100k

MAXIMUS

Maximus is a trusted federal partner supporting mission-critical programs across national security, defense, and public service delivery. Our work focuses on sustaining, operating, and improving essential government systems and services, with proven operational excellence, and a commitment to mission success for our customers.

Joining Maximus means becoming part of a collaborative, mission-driven organization where teamwork, accountability, and professional growth are core to how we operate. We invest in our workforce through training, education, and career development, empowering professionals to deliver high-impact solutions while contributing to outcomes that matter at a national scale.

This position is contingent upon contract award and position availability. Selected candidates will receive a contingent offer of employment, which will become final only upon successful contract award to Maximus, availability of the position, and receipt of authorization to proceed.

The Senior Systems Administrator supports IT operations by designing, automating, testing, and deploying large-scale patching and upgrade solutions. This role focuses on scalable infrastructure architecture, enterprise vulnerability remediation, and modernization efforts in support of secure, compliant, and highly available systems across on-premises, cloud, and hybrid environments.

Ability to obtain and maintain a Public Trust is required. An active Public Trust and/or DHS suitability is preferred. Must be a U.S. Citizen without dual citizenship.

Maximus TCS (Technology and Consulting Services) Internal Job Profile Code: TCS221, T5, Band 8

Job-Specific Essential Duties and Responsibilities:

  • Design and implement enterprise-wide patching and upgrade strategies across on-premises, cloud, and hybrid environments.

  • Architect, automate, and maintain patching and upgrade workflows using scripting, orchestration, and configuration management tools to support large-scale, repeatable deployments.

  • Lead technical planning, testing, and execution of complex system upgrades, including operating systems, infrastructure platforms, and supporting services.

  • Coordinate patch and upgrade activities through formal change, configuration, and release management processes, including documentation, rollback planning, and post-deployment validation.

  • Monitor vulnerability sources (e.g., CVEs, KEVs, vendor advisories) and ensure timely remediation.

  • Provide senior-level technical support and guidance to system administrators, serving as an escalation point for complex patching, upgrade, and configuration issues.

  • Develop and maintain technical documentation, standard operating procedures, and reporting artifacts to support auditability, compliance, and continuous service improvement.

Job-Specific Minimum Requirements:

  • Ability to obtain and maintain a Public Trust is required. An active Public Trust and/or DHS suitability is preferred. Must be a U.S. Citizen without dual citizenship.

  • Enterprise patch and upgrade management across Windows and/or Linux environments.

  • Experience remediating vulnerabilities in accordance with federal security directives.

  • Automation and scripting for patching and configuration management (e.g., PowerShell, Bash, orchestration tools).

  • Change, configuration, and release management in regulated enterprise environments.

  • Systems engineering support for large-scale infrastructure deployments (on-prem, cloud, hybrid).

  • Technical documentation and audit-ready reporting.

  • Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field.

  • 10+ years of progressive experience in systems engineering and enterprise system administration, with demonstrated focus on patching and upgrade management.

Preferred Skills and Qualifications:

  • Experience supporting federal government agencies.

  • Familiarity with enterprise ITSM tools (e.g., ServiceNow) for change and incident tracking.

  • Experience with image development, system hardening, and baseline configuration management.

  • Exposure to cloud platform patching and lifecycle management (Azure and/or AWS).

  • Strong collaboration skills supporting cross-functional engineering and operations teams.

#techjobs #clearance #veteransPage #LI-remote

Minimum Requirements

TCS221, T5, Band 8

Maximus is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information and other legally protected characteristics.

Minimum Salary

$100,000

Maximum Salary

$115,000

Vacancy posted 7 days ago
Similar jobs that could be interesting for youBased on the Senior Systems Administrator in Phoenix, AZ vacancy
  •  ...Senior Systems Administrator Phoenix, Arizona, United States About the Job The position duties include: Working closely with other IT teams including Information Security, Service Desk, Quality Assurance, Production Support and product vendors to plan,... 
    Senior
    Full time
    Contract work
    Temporary work
    Remote work

    5 Star Global Recruitment Partners

    Phoenix, AZ
    5 days ago
  •  ...Specific Essential Duties and Responsibilities: - Provide senior-level administration and operational support for ServiceNow ITSM and ITOM...  ...workflows, integrations, user roles, access controls, and system enhancements within the ServiceNow platform to improve automation... 
    Senior
    Minimum wage
    Contract work
    Temporary work
    Work experience placement
    Remote work

    MAXIMUS

    Phoenix, AZ
    1 day ago
  • $70k - $90k

     ...Senior Systems Administrator Phoenix, AZ Hybrid SARRC's mission is to advance research and provide a lifetime of support for individuals with autism and their families. SARRC is a leading provider of autism services, dedicated to helping individuals with... 
    Senior
    Afternoon shift

    Southwest Autism Research & Resource Center

    Phoenix, AZ
    4 days ago
  •  ...Senior Systems Administrator Arizona Humane Society is seeking a full‑time Senior Systems Administrator to join our team at our Papago Park Campus. This position works a Monday‑Friday schedule from 8:00 AM to 5:00 PM. Join our team as a Senior Systems Administrator and... 
    Senior
    Full time
    Work at office
    Monday to Friday

    Arizona Humane Society

    Phoenix, AZ
    3 days ago
  • $115k - $120k

     ...Senior System Administrator Job Locations US-AZ-Phoenix | US-CO-Lakewood | US-Loveland, CO | US-CA-Folsom ID 2026-4408 Category Information Technology Type Full Time Overview Edgewater Federal Solutions is seeking... 
    Senior
    Full time
    Contract work
    Flexible hours

    Edgewater Federal Solutions

    Phoenix, AZ
    2 days ago
  • $90k - $105k

     ...certified; and appraised at CMMI Maturity Level 3 for Services and Development. Job Description Link Solutions is seeking a Systems Administrator (Senior-Level) to join our team in support of the U.S. Army Information Systems Engineering Command at Fort Huachuca, AZ. U.S.... 
    Senior
    Contract work
    Temporary work
    Relocation

    Linksol Inc

    Phoenix, AZ
    5 days ago
  • Linksol Inc is looking for a Senior Systems Administrator to support the U.S. Army at Fort Huachuca, AZ. The role involves administering enterprise-level systems while ensuring security and performance. Preferred candidates will have over ten years of experience, required... 
    Senior

    Linksol Inc

    Phoenix, AZ
    5 days ago
  • DPR Construction is looking for a System Administrator in Phoenix, Arizona, to enhance business operations through technology support. This role focuses on managing service requests, resolving incidents, and administering Microsoft cloud solutions. The ideal candidate... 
    Senior
    Work at office

    DPR Construction

    Phoenix, AZ
    4 days ago
  • $70k - $100k

    Maximus is looking for a Journeyman System Administrator in Phoenix, Arizona. This role involves executing vulnerability remediation and system patching in extensive IT environments, requiring 7+ years of experience in system administration. Candidates must possess a Bachelor... 
    Senior

    MAXIMUS

    Phoenix, AZ
    4 days ago
  • Maricopa Community College district is looking for a System & Application Administrator Sr in Phoenix, AZ. This advanced role will focus on managing enterprise Windows endpoint infrastructure and optimizing campus-wide wireless networks, ensuring reliability in IT services... 
    Senior

    Maricopa Community College district

    Phoenix, AZ
    1 day ago
  • The Arizona Humane Society in Phoenix is looking for a Senior Systems Administrator to support our life-saving mission. This full-time role requires expertise in maintaining technology infrastructure including servers, networking, and Microsoft 365. Successful candidates... 
    Senior
    Full time

    azhumane

    Phoenix, AZ
    5 days ago
  • Arizona Humane Society is looking for a full-time Senior Systems Administrator at the Papago Park Campus to enhance technology supporting life-saving work. This role works Monday to Friday from 8 AM to 5 PM, and involves maintaining servers, networking, and various IT... 
    Senior
    Full time
    Monday to Friday

    Arizona Humane Society

    Phoenix, AZ
    2 days ago
  • Goodwill of Central and Northern Arizona is seeking a skilled Systems Administrator to provide technical expertise in the architecture, design, and implementation of server infrastructure in Phoenix. The role requires a minimum of 5 years of systems administration experience... 
    Senior

    Goodwill of Central and Northern Arizona

    Phoenix, AZ
    1 day ago
  • Goodwill Industries International, Inc. seeks a Systems Administrator II in Phoenix, AZ to provide technical expertise in server infrastructure and applications. This role requires strong knowledge of Microsoft operating systems and experience in systems administration.... 
    Senior

    Goodwill Industries International, Inc.

    Phoenix, AZ
    23 days ago
  •  ...Title: Senior IT Administrator Location: Phoenix, Arizona Job Type: Full-Time / On-Site Role Summary We are seeking an experienced Sr. IT Admin...  ...infrastructure and ensure the reliable operation of its IT systems and services. This hands‑on role requires a strong... 
    Senior
    Full time
    Contract work

    nFocus Solutions

    Phoenix, AZ
    1 day ago
  •  ...person technical support, troubleshooting various technology-related issues, and ensuring efficient operation of resident technology systems. The ideal candidate should have a strong background in IT support, customer service, and be comfortable communicating technical... 
    Senior

    HumanGood

    Phoenix, AZ
    5 days ago
  • $99.3k - $158.69k

     ...The Patch Management Specialist, Senior oversees enterprise patch management strategy and execution for desktops, laptops, and remote...  ...timelines, and risk reduction, using them to drive accountability with system owners. Required Qualifications Bachelor's degree in IT,... 
    Senior
    Contract work
    Work at office
    Remote work

    ASM Research, An Accenture Federal Services Company

    Phoenix, AZ
    5 days ago
  • $70k - $77k

     ...: AHCCCS Arizona Health Care Cost Containment System Accountability, Community, Innovation, Leadership, Passion, Quality,...  ...industry. Come join our dynamic and dedicated team. Systems Administrator Senior Job Location: Address: 801 E Jefferson St, Phoenix, AZ... 
    Senior
    Full time
    Part time
    Internship
    Work at office
    Remote work
    Flexible hours

    State of Arizona

    Phoenix, AZ
    1 day ago
  • Gould Intelligent is seeking a Sr. IT Help Desk Administrator for a contract position in downtown Phoenix, Arizona. The ideal candidate must have at least 3 years of IT experience and an Associates Degree, along with proficiency in Active Directory, DNS, DHCP, Office 36... 
    Senior
    Contract work
    Work at office

    Gould Intelligent LLC

    Phoenix, AZ
    2 days ago
  • $30 - $40 per hour

     ...technology at one of Phoenix’s premier nonprofit senior living communities! Nestled on a...  ...technologies, including desktop phone systems, conferencing tools, video surveillance,...  ...preferred for assignments with greater systems administration responsibility. Benefits At HumanGood,... 
    Senior
    Remote work

    HumanGood

    Phoenix, AZ
    5 days ago
  • Dine Development Corporation is seeking a Senior Linux Administrator to support critical financial systems. You will manage Linux environments, focusing on performance, security, and automation. This role involves migrating systems to AWS and supporting configuration management... 
    Senior

    Dine Development Corporation

    Phoenix, AZ
    3 days ago
  • $73.67k - $95.77k

    System & Application Administrator Sr (IT) Job ID: 322859 Location: Phoenix College Full/Part Time: Full Time Regular/Temporary: Regular Hiring Salary Range: $73,670.00 - $95,771.00/annually, DOE Grade: 119 Work Schedule: Fall: Monday - Friday, 8 AM - 5 PM; Summer... 
    Senior
    Full time
    Temporary work
    Part time
    Work experience placement
    Summer work
    Work at office
    Work visa
    Monday to Friday
    Flexible hours

    Maricopa Community College district

    Phoenix, AZ
    23 days ago
  • $77k - $202k

     ...of the Spatial Enablement team you lead efforts in consulting, designing, and implementing GIS applications-based solutions. As a Senior Associate you analyze complex problems, mentor others, and maintain rigorous standards. You concentrate on building client relationships... 
    Senior
    Full time
    H1b

    PwC

    Phoenix, AZ
    1 day ago
  • Job Title: Senior Linux Administrator Location: Remote | Washington, DC Position Type: Full time Req ID: JR100187 Overview DDC seeks a Senior...  ...to support a mission-critical federal financial systems environment running on enterprise Linux. The role maintains... 
    Senior
    Full time
    For contractors
    For subcontractor
    Work at office
    Remote work

    Dine Development Corporation

    Phoenix, AZ
    3 days ago
  • $32.08 - $46.51 per hour

    Responsibilities The Associate PACS Administrator provides basic system administration of the systems utilized for display, retention, and interpretation of medical imaging exams. Exercises judgment within well‑defined procedures to solve moderately complex problems with... 

    Itlearn360

    Phoenix, AZ
    4 days ago
  • $32.08 - $46.51 per hour

    Itlearn360 is seeking an Associate PACS Administrator in Phoenix, Arizona. This 100% onsite position involves providing technical support for PACS and related medical imaging applications, monitoring performance, and implementing security protocols. Ideal candidates should... 
    Hourly pay

    Itlearn360

    Phoenix, AZ
    4 days ago
  •  ...Senior Director, Principal Gifts About the Company Philanthropic organization supporting Indigenous culture & individuals Industry Non-Profit Organization Management Type Non Profit Founded 2017 Employees 11-50 Categories... 
    Senior

    Confidential

    Phoenix, AZ
    1 day ago
  •  ...design, configuration, maintenance, and reliability of computer systems and servers. Essential Duties and Responsibilities:...  ...equivalent work experience preferred. ~5 years of systems administration experience required; 7-10+ years preferred ~ Current MCSE... 
    Work experience placement
    Work at office
    Local area
    Remote work

    Goodwill of Central and Northern Arizona

    Peoria, AZ
    3 days ago
  •  ...to know your authentic experiences, communication style, and problem-solving approach. U-Haul is seeking an experienced Systems Administrator with a background in Systems Security. For local candidates, this is a hybrid position that requires you to be onsite... 
    Local area
    Remote work
    3 days per week

    U-Haul

    Phoenix, AZ
    5 days ago
  •  ...Enterprise Systems Administrator Greenberg Traurig (GT), a global law firm with locations across the world in 15 countries, has an exciting employment opportunity for you. We offer competitive compensation and an excellent benefits package, along with the opportunity... 
    Work experience placement
    Flexible hours

    Greenberg Traurig

    Phoenix, AZ
    5 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Senior Systems Administrator. Be the first to apply!