Ashbin Mattamana Abraham

Technical Support Specialist @T-Mobile

Provided comprehensive technical support for 200+ end users across multiple departments, maintaining 98% customer satisfaction rating and consistently meeting SLA requirements.• Diagnosed and resolved complex hardware and software issues on Windows 7/8/10/11, macOS, and Linux systems, reducing average ticket resolution time by 25%.• Resolved software and application issues related to Microsoft Office 365, Jira, ServiceNow, and Slack, improving end-user experience and productivity.• Managed and maintained server infrastructure, performing routine maintenance, updates, and monitoring using Splunk for system performance analysis.• Provided support for network infrastructure, including troubleshooting LAN/WAN connectivity, VPN configurations, and firewall security policies.• Configured and deployed new workstations, laptops, tablets, and mobile devices, ensuring proper integration with company network and security protocols.• Administered Microsoft Office 365 and Google Workspace environments, including user account management, SharePoint configuration, and email troubleshooting.• Implemented and maintained network security measures including firewall configurations, VPN setup, and antivirus deployment across enterprise environment.• Managed Active Directory accounts, resetting passwords, configuring user permissions, and maintaining security policies to prevent unauthorized access.• Diagnosed and repaired hardware failures, including desktops, laptops, printers, and POS systems, ensuring smooth operation of business-critical systems.