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

Sr. System Administrator

Stellar IT Group

Overview:

Sr. System Administrator

Houston, TX

6-12+ Months Contract

Required Qualifications:

  • 7+ years of experience as a System Administrator, Infrastructure Administrator, Network Administrator, or similar role.
  • Strong expertise supporting enterprise on-premises infrastructure, including Windows Server, Linux, Active Directory, DNS, DHCP, storage, virtualization, and networking technologies.
  • Hands-on experience administering VMware virtualization technologies.
  • Experience designing, implementing, and supporting hybrid environments that integrate on-premises and cloud infrastructure.
  • Hands-on experience with one or more cloud platforms including AWS, Google Cloud Platform (GCP), Microsoft Azure, or equivalent cloud technologies.
  • Strong understanding of cloud networking, identity management, security, monitoring, backup, and disaster recovery concepts.
  • Experience with Infrastructure as Code (IaC) tools such as Terraform, AWS CloudFormation, ARM/Bicep, Ansible, Pulumi, or similar technologies.
  • Proficiency in scripting and automation using PowerShell, Bash, Python, or similar languages.
  • Strong knowledge of network configuration and management, including firewall administration.
  • Experience administering Active Directory, domain controllers, and Group Policy.
  • Experience with SonicWall and Palo Alto firewalls.
  • Knowledge of storage solutions including Isilon, Vblock, VxRail, Data Domain, and Avamar.
  • Excellent troubleshooting, analytical, and problem-solving skills.
  • Ability to work independently and collaboratively within a team environment.
  • Strong organizational, communication, and documentation skills.
  • Experience managing third-party vendors and service providers.
  • Demonstrated project management experience, including planning, execution, and delivery of infrastructure initiatives.
  • Strong soft skills, including the ability to communicate technical concepts effectively to both technical and non-technical audiences.
  • Proactive, self-motivated attitude with a commitment to continuous learning and improvement.
Preferred Qualifications:
  • Certifications such as:
    • AWS Certified SysOps Administrator
    • AWS Solutions Architect Associate
    • Google Associate Cloud Engineer or Professional Cloud Architect
    • Microsoft Azure Administrator Associate
    • VMware VCP
    • CompTIA Network+
    • CompTIA Security+
  • Experience with other system administration tools and technologies (e.g., Active Directory, DNS, DHCP).
  • Knowledge of ITIL best practices and documentation standards.
  • Experience implementing Infrastructure as Code (IaC) and DevOps practices in enterprise environments.
  • Experience with CI/CD pipelines and automation frameworks.
  • Experience supporting containerization technologies such as Docker and Kubernetes.
  • Knowledge of ITIL best practices and documentation standards.

Experience with monitoring and observability platforms such as SolarWinds, Datadog, Splunk, or similar tools.

Skills:

windows,server,Active Directory,vmware,aws,gcp
Vacancy posted 3 days ago
Similar jobs that could be interesting for youBased on the Sr. System Administrator in Houston, TX vacancy
  •  ...JOB SUMMARY The Sr. Systems Administrator is responsible for the maintenance, configuration, and reliable operation of computer systems and servers. This role involves ensuring that the availability of systems is maintained, performance is optimized, and that... 
    Senior
    Local area

    Baylor Genetics

    Houston, TX
    1 day ago
  •  ...Sr. Systems AdministratorTransCore (TRN), a subsidiary of ST Engineering, is seeking a talented Sr. Systems Administrator to join our team in Houston, Texas. The Senior Systems Administrator position provides day-to-day advanced technical support for existing customer... 
    Senior
    Work experience placement
    Visa sponsorship

    TransCore

    Houston, TX
    2 days ago
  •  ...Stellar IT Solutions LLC is seeking a senior System Administrator with 7+ years of experience to manage enterprise on-premises infrastructure and hybrid cloud environments. You will support Windows Server, Linux, AD, DNS/DHCP, storage, virtualization, and networking,... 
    Senior

    Stellar IT Solutions

    Houston, TX
    2 days ago
  •  ...Senior Endpoint AdministratorThe Senior Endpoint Administrator is responsible for managing and modernizing the organization's endpoint environment across a hybrid infrastructure. This role focuses on delivering secure, scalable, and efficient device management solutions... 
    Senior
    Full time
    Local area

    Nabors Industries

    Houston, TX
    2 days ago
  •  ...We’re searching for a Senior Systems Administrator , someone who’s ready to be part of the best ranked children’s hospital in Texas, and among the best in the nation. In this position, you will maintain and administer software and hardware on major hospital systems. Consults... 
    Senior

    Socket

    Houston, TX
    2 days ago
  •  ...Senior Systems AdministratorLocation: Downtown Houston, TX Duration: 06 Months plus Rate: DOE US Citizens and Green cards are Preferred.The Senior Systems Administrator reports to the IT Technical Services Manager and is responsible for the administration, implementation... 
    Senior
    Work at office

    Georgia IT Inc

    Houston, TX
    3 days ago
  •  ...NAVA Software solutions is looking for a Sr. System Admin Details: Sr. System Admin Location: Houston, TX (Need...  ...time/ Direct Hire Summary: The Senior Systems Administrator is responsible for the operations of servers, network, and container... 
    Senior
    Full time
    Work at office

    Nava Software Solutions

    Houston, TX
    2 days ago
  •  ...Senior System AdministratorAre you passionate about human space exploration, understanding the origins of the universe, and working...  ...United States.We have an exciting opportunity for a Senior System Administrator to join the JETSII Contract.The Senior System Administrator... 
    Senior
    Hourly pay
    Permanent employment
    Contract work
    Work experience placement
    Local area

    Amentum

    Houston, TX
    5 days ago
  •  ...the expert-level technical criteria, structural engineering responsibilities, and leadership expectations for the Senior IT System Administrator role at Foxconn Industrial Internet. ● 1.3. Mission: The Senior System Administrator is responsible for designing, optimizing... 
    Senior
    Weekend work

    Foxconn Technology Group

    Houston, TX
    1 day ago
  •  ...Analyst Sr System AdminContract – 12+ monthHybrid – 3 days onsite/2 days work from homeHouston, TXWe are looking for an Endpoint Solutions...  ....Certification in Microsoft 365 Certified: Modern Desktop Administrator Associate, Microsoft 365 Certified: Enterprise Administrator... 
    Senior

    Royal & Ross

    Houston, TX
    3 days ago
  •  ...and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting...  ...United States. We have an exciting opportunity for a Senior System Administrator to join the JETSII Contract. The Senior System Administrator... 
    Senior
    Hourly pay
    Permanent employment
    Contract work
    Work experience placement
    Work at office
    Local area

    Amentum

    Houston, TX
    5 days ago
  • Novum Energy is seeking an experienced systems administrator to maintain Windows Server infrastructure, AD, and Group Policy. The role supports Microsoft 365, Azure, and Entra ID environments, while monitoring endpoints with EDR tooling and reviewing security logs. You... 
    Senior

    Novum Energy

    Houston, TX
    4 days ago
  • What We Are Looking ForAs a SR Network Design Specialist, you are responsible for designing...  ...networks (e.g., AT&T Private IP), Cisco Systems' IOS, Juniper Networks' JunOS, IPSEC...  ...and PowerPoint.Competence with network administration and testing tools, including but not... 
    Senior
    Work experience placement

    Kinder Morgan

    Houston, TX
    5 days ago
  •  ...Job Title: Sr. Server Administrator Location: Houston, TX - Onsite Duration: 12+ Months Note: Need Local and W2 Candidates Only...  ...Server 2016 to the latest supported and certified operating systems. All upgrades are on prem infrastructure. Technologies... 
    Senior
    Local area

    Brilliant Infotech Inc

    Houston, TX
    2 days ago
  •  ...storage, and cloud infrastructure. The ideal candidate is a strong hands-on Linux engineer who can go beyond basic administration to troubleshoot complex system issues, understand what is happening at the process and service level, identify root causes, and implement... 
    Senior
    Houston, TX
    8 days ago
  • Job Summary The Senior IT Network Administrator at Community is critical in managing the day-to-day operations and maintenance of the organization...  ..., performance, and security of Community's IT networking systems. Architect secure, resilient, and scalable network solutions... 
    Senior
    Work experience placement
    Work at office

    Community Health Choice

    Houston, TX
    2 days ago
  •  ...Description Job Summary: The Senior Salesforce Administrator is responsible for the administration,...  ...resource for the platform, ensuring system reliability, supporting users,...  ...****@*****.***. com and mention Sr Salesforce Administrator Position. \nCompany... 
    Senior

    Key Energy Services

    Houston, TX
    5 days ago
  •  ...environments. We are seeking an experienced SQL Server Database Administrator with strong expertise in Microsoft SQL Server, PostgreSQL, and...  ..., and support highly available database environments across production, development, testing, and disaster recovery systems while... 
    Senior

    Randstad

    Houston, TX
    2 days ago
  • $110.7k - $218.3k

     ...immigration sponsorship may be availablePreferred Masters Degree or advanced degree in the area of specialization Experience defining systems strategy, roadmap, developing process flow diagrams, user journeys and stories, developing business and systems requirements,... 
    Senior
    Local area

    Deloitte

    Houston, TX
    5 days ago
  • $119k - $198.9k

     ...Experience Cloud, and Financial Service CloudExperience in Lightning (Aura and LWC)Bachelor's degree in computer science, information systems, or a technology field; or equivalent years of experience.Ability to travel 50%, on average, based on the work you do and the... 
    Senior
    Local area
    Visa sponsorship

    Deloitte

    Houston, TX
    5 days ago
  • $63 - $73 per hour

     ...environments. We are seeking an experienced SQL Server Database Administrator with strong expertise in Microsoft SQL Server, PostgreSQL, and...  ...production, development, testing, and disaster recovery systems while driving automation and operational excellence. The ideal... 
    Senior
    Hourly pay
    Contract work
    Temporary work
    Work experience placement

    Randstad

    Houston, TX
    4 days ago
  •  ...Senior Network Administrator We are seeking a Senior Network Administrator with experience in VLAN / VLAN segmentation to join our team...  ...responsibilities include: ~80% administration tasks including system maintenance, troubleshooting, and performance monitoring. ~2... 
    Senior

    Saviance

    Houston, TX
    3 days ago
  • $110.5k - $127.1k

     ...Systems AdministratorGridforce Energy Management's mission is to ensure power flows consistently and reliability while enhancing our...  ...work. Gridforce Energy Management is a NAES Company.The Systems Administrator is responsible for ensuring the smooth and secure operation of... 
    Full time
    Work at office
    Local area
    Remote work
    Monday to Friday

    NAES

    Houston, TX
    3 days ago
  •  ...System Administration & Maintenance Install, configure, upgrade, and patch Software applications. Monitor system health, logs, and proactively identify and resolve issues. Perform root cause analysis and implement preventive measures. Work with the database team to maintain... 

    TechDigital Group

    Houston, TX
    4 days ago
  •  ...Infrastructure Systems AdministratorThe Infrastructure Systems Administrator is responsible for designing, building, and maintaining the core localized infrastructure that supports the department's strategic goals. This includes performing complex technical work involving... 
    Local area
    Remote work

    Harris County

    Houston, TX
    3 days ago
  • Job TitleClient- Conoco Length-Long Term contract Location- Houston, TX (hybrid remote/onsite role) Must have: Linux, Openshift, devops. Plus: Ansible This role is helping support the environment/ future environment. Will be rolling out other containers later this year...
    Long term contract
    Remote work

    Software Technology Inc

    Houston, TX
    3 days ago
  •  ...This role focuses on providing systems administration and support for a diverse team that manages IT operations across 32 sites in the U.S. and international locations. The successful candidate will engage with various stakeholders to ensure the seamless functioning of... 

    VC5 Consulting

    Houston, TX
    3 hours ago
  •  ...April 6, 2026 Full-Time Hybrid Locations Showing 1 location Headquarters Baylor Genetics Houston, TX 77021, USA Description The System Administrator plays a critical role in maintaining and advancing Baylor Genetics’ technology infrastructure. This position is responsible... 
    Full time
    Work at office
    Local area

    Baylor Genetics

    Houston, TX
    3 days ago
  •  ...We are excited to announce we are expanding and looking to grow our team with a new System Administrator! Our Company Culture: Our diverse workforce allows Centre to develop and leverage knowledge, skills, and experiences that impact our overall success. Within our... 
    Work at office

    Centre Technologies

    Houston, TX
    4 days ago
  •  ...IDR is seeking a Systems Administrator to join one of our top clients for an opportunity in Houston, TX . In this role, you will support enterprise telecommunications, unified communications, and contact center operations in a fast-paced environment. You'll partner with... 

    IDR Healthcare

    Houston, TX
    1 day ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Sr. System Administrator. Be the first to apply!