IT Systems & Security Support Analyst – Tier III

Decision Information Resources (DIR)

. Provide Tier III support for endpoints, infrastructure systems, network services, identity management, and enterprise applications .

Posted 10/15/2026full-timeHouston • Texas • United StatesMid-LevelSenior💰 $82,000 - $90,697 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in providing Tier III support for IT infrastructure, including troubleshooting complex issues, managing endpoint and identity systems, and implementing security best practices. Proficient in Microsoft SQL Server environments and enterprise backup solutions, with strong analytical and documentation skills.

Highest-signal resume keywords

Tier III SupportMicrosoft SQL ServerAdvanced TroubleshootingBackup And Recovery SolutionsCybersecurity Best Practices

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Endpoint ManagementRoot-Cause AnalysisNetwork ServicesIdentity ManagementWindows LAPSTCP/IP NetworkingDNSDHCPVLANsPrivileged Access Management

Soft Skills

Excellent Communication SkillsCustomer-Focused Service OrientationStrong Organizational SkillsAbility To Prioritize TasksCollaboration With Stakeholders

Tools & Technologies

Microsoft IntuneWindows AutopilotVeeam Backup & ReplicationSQL Server Management Studio (SSMS)VPN Technologies

Industry Keywords

Information TechnologyCybersecurityInfrastructure SupportService RestorationDisaster Recovery

Tech Stack

Tools & technologies

Cyber SecurityDNSFirewallsMS SQL ServerSQLSwitchingTCP/IP

About the role

Key responsibilities & impact

Provide Tier III support for endpoints, infrastructure systems, network services, identity management, and enterprise applications
Troubleshoot and resolve complex hardware, operating system, software, authentication, connectivity, and performance issues
Perform root-cause analysis and recommend corrective actions
Support employee onboarding, offboarding, device deployment, account provisioning, and access management
Administer approved privileged-access controls, including local administrator permissions and Windows LAPS
Create and maintain technical documentation, procedures, and knowledge-base articles
Provide guidance and escalation support to Tier I and Tier II support personnel
Monitor and support switches, wireless networks, firewalls, VPN services, DNS, DHCP, and internet connectivity
Implement approved configuration changes and assist with service restoration during outages
Coordinate issue resolution with vendors, service providers, and technology partners
Administer and monitor enterprise backup and recovery solutions
Review backup jobs, alerts, retention policies, and system health
Investigate failures and perform approved restoration and recovery activities
Conduct periodic recovery testing and maintain disaster recovery documentation
Support business continuity initiatives and escalate potential data loss or recovery risks
Support Microsoft SQL Server environments and database-dependent applications
Monitor database availability, backups, scheduled jobs, and overall system health
Troubleshoot authentication, permissions, connectivity, and application integration issues
Assist with approved maintenance, patching, backup, restoration, and testing activities
Implement and support approved security controls and best practices
Monitor for vulnerabilities, unauthorized access, and control deficiencies
Participate in audits, compliance reviews, risk assessments, and security investigations
Assist with remediation efforts affecting endpoints, infrastructure, identity systems, and backup environments
Maintain accurate records of system configurations, changes, incidents, and operational procedures

Requirements

What you’ll need

Associate's or bachelor's degree in Information Technology, Computer Science, Cybersecurity, Networking, or a related field, or equivalent education and experience
Three to five years of progressively responsible IT support and systems administration experience, or infrastructure support
Demonstrated experience providing advanced technical support within Microsoft-based environments
Advanced troubleshooting and problem-solving skills
Strong analytical and root-cause analysis capabilities
Excellent written and verbal communication skills
Customer-focused service orientation
Strong organizational and documentation skills
Ability to prioritize multiple tasks and manage competing deadlines
Ability to work independently while collaborating effectively with technical and non-technical stakeholders
Knowledge of Microsoft Intune, Windows Autopilot, Microsoft Entra ID, Windows 11, endpoint management, and identity administration
Knowledge of TCP/IP networking, DNS, DHCP, VLANs, routing, switching, wireless networking, VPNs, and firewall technologies
Knowledge of enterprise backup and recovery platforms such as Veeam Backup & Replication or equivalent solutions
Knowledge of Microsoft SQL Server, SQL Server Management Studio (SSMS), database connectivity, permissions management, and backup/recovery concepts
Knowledge of cybersecurity best practices, including multifactor authentication, privileged access management, encryption, and least-privilege principles