Senior System Administrator
Senior System Administrator
Posted on :
21-08-2025
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1 Vacancy
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Job Description
Job Title: Senior System Administrators
Job Type: Full-Time/Contract *This role is a 1 year assignment*
Job Location: Houston TX 77002 *This role is ONSITE*
Job Schedule: M-F 8am-5pm
Job Salary: $47/hr
Project and Requirements
The project involves the administration maintenance and enhancement of enterprise-level IT systems within the organization. The resource will be responsible for managing Active Directory Exchange virtualization platforms and backup systems while ensuring compliance with county security policies and the Active Directory Tiering model.
Key requirements include:
- Performing system assessments and implementing security controls.
- Executing system upgrades and validating disaster recovery procedures.
- Enhancing monitoring and alerting capabilities.
- Providing thorough documentation and knowledge transfer to internal staff.
- Collaborating with cross-functional teams to ensure the stability security and performance of critical IT services.
Role and Responsibilities
System Administration & Maintenance
- Manage and maintain enterprise-level systems including Active Directory Exchange virtualization platforms (e.g. VMware) and cloud services (AWS Azure M365).
- Monitor system performance and ensure high availability and reliability.
Security & Compliance
- Implement and enforce security policies in line with county and federal regulations.
- Manage access controls patch management and vulnerability remediation.
Infrastructure Support
- Support server infrastructure storage systems and backup solutions.
- Participate in disaster recovery planning and testing.
Project Implementation
- Lead or support IT projects such as system upgrades migrations and new deployments.
- Collaborate with other departments to assess needs and deliver solutions.
Documentation & Reporting
- Maintain detailed system documentation configurations and procedures.
- Generate reports for audits compliance and performance metrics.
User Support & Training
- Provide Tier 3 support for escalated technical issues.
- Train junior staff and end-users on system use and best practices.
Collaboration & Communication
- Work closely with cybersecurity teams network engineers and application developers.
- Communicate effectively with stakeholders across departments.
Scheduled Milestones and Deliverables
- Conduct initial assessment of current enterprise systems.
- Implement security hardening measures per the Active Directory Tiering model.
- Test and validate backup and disaster recovery procedures.
- Perform system upgrades on legacy platforms and validate stability post-upgrade.
- Deploy or enhance monitoring and alerting tools for improved visibility.
- Deliver knowledge transfer sessions and provide thorough documentation.
- Conclude with project closeout including final deliverables sign-off and transition to operations.
Performance Metrics
Performance will be evaluated based on:
- Adherence to project timelines and milestone completion.
- System uptime reliability and reduction in incident response times.
- Compliance with security and configuration standards.
- Quality and completeness of documentation.
- Effectiveness of knowledge transfer to internal staff.
- Stakeholder satisfaction from periodic reviews and feedback.
- Successful implementation of system upgrades security controls and disaster recovery validation.
Requirements
Education:
Bachelor s degree in Information Technology Computer Science or a related field. Equivalent professional experience in enterprise systems and cloud infrastructure may be considered in lieu of formal education.
Experience:
- Over 10 years of experience in enterprise IT environments with a focus on systems administration identity management and cloud services.
- Extensive experience supporting and migrating infrastructure to cloud platforms such as Microsoft Azure and AWS GovCloud.
- Proven track record managing and securing Active Directory environments including Tier 0/Tier 1 assets and hybrid identity configurations.
- Experience with Microsoft 365 administration including Exchange Online Teams SharePoint and compliance/security features.
- Familiarity with infrastructure-as-code automation and scripting using PowerShell.
Knowledge Skills and Abilities (KSAs):
- Strong understanding of Active Directory Entra ID (Azure AD) Group Policy DNS DHCP and hybrid identity synchronization (Azure AD Connect).
- Proficient in Microsoft 365 administration and troubleshooting including mail flow identity federation and licensing.
- Skilled in PowerShell scripting for automation reporting and integration with Microsoft Graph API.
- Knowledge of Zero Trust principles RBAC conditional access and secure authentication models.
- Ability to design implement and support cloud-based infrastructure solutions in compliance with government and enterprise standards.
- Strong analytical documentation and communication skills with the ability to work across technical and non-technical teams.
Education: Bachelor s degree in Information Technology, Computer Science, or a related field. Equivalent professional experience in enterprise systems and cloud infrastructure may be considered in lieu of formal education. Experience: Over 10 years of experience in enterprise IT environments, with a focus on systems administration, identity management, and cloud services. Extensive experience supporting and migrating infrastructure to cloud platforms such as Microsoft Azure and AWS GovCloud. Proven track record managing and securing Active Directory environments, including Tier 0/Tier 1 assets and hybrid identity configurations. Experience with Microsoft 365 administration, including Exchange Online, Teams, SharePoint, and compliance/security features. Familiarity with infrastructure-as-code, automation, and scripting using PowerShell. Knowledge, Skills, and Abilities (KSAs): Strong understanding of Active Directory, Entra ID (Azure AD), Group Policy, DNS, DHCP, and hybrid identity synchronization (Azure AD Connect). Proficient in Microsoft 365 administration and troubleshooting, including mail flow, identity federation, and licensing. Skilled in PowerShell scripting for automation, reporting, and integration with Microsoft Graph API. Knowledge of Zero Trust principles, RBAC, conditional access, and secure authentication models. Ability to design, implement, and support cloud-based infrastructure solutions in compliance with government and enterprise standards. Strong analytical, documentation, and communication skills with the ability to work across technical and non-technical teams.
Employment Type
Full Time
Key Skills
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