Executive IT Support Specialist — Windows & Microsoft 365

CornerStone Technology Talent Services; Addison (TX); On-site; USD 42,000 - 66,000; Full time

Job summary

CornerStone Technology Talent Services is seeking an IT Support Specialist to provide hands-on technical support for employees in a Windows-based environment. The role covers M365 administration, identity and access management, endpoint management, IT assets, and enterprise applications, with on-site work in Addison, TX.

The ideal candidate owns issues to resolution, communicates proactively, and supports end users in a fast-paced setting.

Qualifications

• Hands-on experience supporting end users in a Windows-based corporate IT environment.
• Working knowledge of Active Directory and Group Policy.
• Familiarity with Microsoft 365 administration, Microsoft Entra ID, and endpoint management.
• Strong troubleshooting across Windows, authentication, basic networking, hardware, and enterprise apps.
• Understanding of information-security fundamentals including MFA, least privilege, endpoint security, patching, and access control.
• Strong communication, documentation, organization, and task-management skills.
• Ability to independently investigate and resolve technical issues while escalating appropriately.
• Strong initiative, attention to detail, and willingness to learn new technologies.
• Ability to regularly work onsite in Addison, TX and assist with workstation and office IT equipment setup as needed.

Responsibilities

• Serve as a primary point of contact for internal IT support, troubleshooting Windows devices, Microsoft 365 applications, authentication and access issues, hardware, peripherals, connectivity, and enterprise applications.
• Provide responsive in-person technical support for employees and executives, including workstations, conference rooms, and office technology.
• Manage IT support requests through a ticketing system, including prioritization, documentation, escalation, follow-through, and resolution.
• Handle employee onboarding, offboarding, access changes, and user administration across Microsoft and other enterprise applications.
• Administer corporate endpoints using Microsoft Intune, including device enrollment, configuration, application deployment, compliance, patching, security settings, and Windows Autopilot.
• Administer Microsoft 365, user accounts, groups, licenses, permissions, and supported SaaS applications.
• Support Active Directory, Group Policy, and Microsoft Entra ID environments.
• Maintain IT asset, software, identity, and license records throughout their lifecycle.
• Maintain technical procedures and knowledge-base documentation while identifying opportunities to improve or automate recurring IT processes.
• Follow established change-management and information-security procedures.
• Proactively communicate status, blockers, and risks while ensuring priority support issues receive appropriate attention.

Skills

End-user support

Windows troubleshooting

Active Directory

Group Policy

Microsoft 365 administration

IT security fundamentals

Documentation

Onsite support

Communication

Tools

Microsoft Intune

Windows Autopilot

Active Directory

Group Policy

Microsoft Entra ID

Microsoft 365

Jira

Confluence

Job description

CornerStone Technology Talent Services is seeking an IT Support Specialist to provide hands-on technical support for employees in a Windows-based environment. The role covers M365 administration, identity and access management, endpoint management, IT assets, and enterprise applications, with on-site work in Addison, TX.

The ideal candidate owns issues to resolution, communicates proactively, and supports end users in a fast-paced setting.