Provides first-line technical support to end users through tickets, phone, email, and remote sessions. Troubleshoots Windows, macOS, and Linux hardware and software issues; manages computer assets and inventory; supports LAN, VPN, firewalls, switches, routers, and servers; assists with Microsoft Office and enterprise applications; escalates complex issues through ServiceNow, Jira, or BMC Remedy; and contributes to infrastructure, upgrade, networking, and security projects.