Senior System Administrator

Job Description
***Please note: This position is onsite and not remote. Candidates must be based in the Houston area, as relocation assistance is not provided. Only individuals authorized to work in the U.S. will be considered.***

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 systemassessments and implementing security controls.
• Executing systemupgrades and validating disaster recovery procedures.
• Enhancing monitoring andalerting capabilities.
• Providing thoroughdocumentation and knowledge transfer to internal staff.
• Collaborating withcross-functional teams to ensure the stability, security, and performanceof critical IT services.

Role and Responsibilities

System Administration & Maintenance

• Manage and maintainenterprise-level systems including Active Directory, Exchange,virtualization platforms (e.g., VMware), and cloud services (AWS, Azure,M365).
• Monitor systemperformance and ensure high availability and reliability.

Security & Compliance

• Implement and enforcesecurity policies in line with county and federal regulations.
• Manage access controls,patch management, and vulnerability remediation.

Infrastructure Support

• Support serverinfrastructure, storage systems, and backup solutions.
• Participate in disasterrecovery planning and testing.

Project Implementation

• Lead or support ITprojects such as system upgrades, migrations, and new deployments.
• Collaborate with otherdepartments to assess needs and deliver solutions.

Documentation & Reporting

• Maintain detailed systemdocumentation, configurations, and procedures.
• Generate reports foraudits, compliance, and performance metrics.

User Support & Training

• Provide Tier 3 supportfor escalated technical issues.
• Train junior staff andend-users on system use and best practices.

Collaboration & Communication

• Work closely withcybersecurity teams, network engineers, and application developers.
• Communicate effectivelywith stakeholders across departments.

Scheduled Milestones and Deliverables

• Conduct initialassessment of current enterprise systems.
• Implement securityhardening measures per the Active Directory Tiering model.
• Test and validate backupand disaster recovery procedures.
• Perform system upgradeson legacy platforms and validate stability post-upgrade.
• Deploy or enhancemonitoring and alerting tools for improved visibility.
• Deliver knowledgetransfer sessions and provide thorough documentation.
• Conclude with projectcloseout, including final deliverables, sign-off, and transition tooperations.

Performance Metrics

Performance will be evaluated based on:

• Adherence to projecttimelines and milestone completion.
• System uptime,reliability, and reduction in incident response times.
• Compliance with securityand configuration standards.
• Quality and completenessof documentation.
• Effectiveness ofknowledge transfer to internal staff.
• Stakeholder satisfactionfrom periodic reviews and feedback.
• Successfulimplementation of system upgrades, security controls, and disasterrecovery 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 10years of experience in enterprise IT environments, with a focus on systemsadministration, identity management, and cloud services.
• Extensiveexperience supporting and migrating infrastructure to cloud platforms suchas Microsoft Azure and AWS GovCloud.
• Proventrack record managing and securing Active Directory environments,including Tier 0/Tier 1 assets and hybrid identity configurations.
• Experiencewith Microsoft 365 administration, including Exchange Online, Teams,SharePoint, and compliance/security features.
• Familiaritywith infrastructure-as-code, automation, and scripting using PowerShell.

Knowledge, Skills, and Abilities (KSAs):

• Strongunderstanding of Active Directory, Entra ID (Azure AD), Group Policy, DNS,DHCP, and hybrid identity synchronization (Azure AD Connect).
• Proficientin Microsoft 365 administration and troubleshooting, including mail flow,identity federation, and licensing.
• Skilledin PowerShell scripting for automation, reporting, and integration withMicrosoft Graph API.
• Knowledgeof Zero Trust principles, RBAC, conditional access, and secureauthentication models.
• Abilityto design, implement, and support cloud-based infrastructure solutions incompliance with government and enterprise standards.
• Stronganalytical, documentation, and communication skills with the ability towork across technical and non-technical teams.