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Senior System Administrator

VDart

 

Houston, TX, USA

Posted On: 30+ days ago
Experience: 7+ years
Availability: Onsite
Openings: 1
Category: System Administrator
Tenure: Contract - Corp-to-Corp
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Description

 

Key Responsibilities

  • Administer, maintain, and troubleshoot on-premise server infrastructure, including Windows and Linux servers.
  • Manage and configure network components, ensuring optimal performance, reliability, and security.
  • Implement and manage firewall rule configurations to maintain a secure network environment.
  • Monitor and maintain system health, ensuring high availability and performance of critical resources.
  • Perform server operating system upgrades and manage vendor patching.
  • Collaborate with the IT team to design, implement, and maintain virtualized environments using VMware.
  • Administer and support hybrid cloud environments, including AWS, GCP, Azure, and related cloud services.
  • Design, deploy, and maintain cloud infrastructure, networking, security controls, and monitoring solutions.
  • Develop and implement automation scripts and Infrastructure as Code (IaC) solutions to streamline system administration and provisioning tasks.
  • Perform routine system audits, updates, and patches to ensure systems remain compliant with security and operational standards.
  • Respond to and resolve technical issues in a timely manner, providing excellent user support.
  • Document system configurations, procedures, architecture diagrams, and operational changes accurately.
  • Administer and manage Active Directory (AD) and domain controllers, ensuring proper configuration and maintenance.
  • Create and manage Group Policies (GPOs) to enforce security and compliance requirements.
  • Administer and manage firewalls, including SonicWall and Palo Alto firewalls.
  • Manage enterprise storage solutions including Isilon, Vblock, VxRail, Data Domain, and Avamar.
  • Manage relationships with vendors, ensuring the timely procurement of IT resources and services.
  • Lead and participate in infrastructure and cloud migration projects, ensuring project milestones and deliverables are met.
  • Communicate effectively with team members, stakeholders, and users to provide clear updates and technical support.
  • Prepare and maintain comprehensive documentation, reports, architecture diagrams, and project updates.

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+

Additional preferred qualifications:

  • 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

Education

Bachelor's degree

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