Senior Systems Administrator
- Results-driven IT professional with over a decade of experience in designing, implementing, and maintaining complex IT infrastructures.
- Demonstrated success in optimizing system/network performance, ensuring security compliance, and implementing efficient troubleshooting methodologies. Proven expertise in troubleshooting and resolving intricate hardware/software issues to minimize downtime. Adept at leading cross-functional teams to deliver high-quality solutions that align with organizational objectives. Demonstrated ability to manage large-scale projects, streamline processes, and enhance overall system reliability. Committed to staying abreast of emerging technologies and industry best practices to drive continuous improvement in system administration.Known for a meticulous approach to problem-solving and a strong focus on delivering exceptional service in dynamic, deadline- driven environments.
Areas of Expertise
- IT Infrastructure Optimization, Network Administration, Server Virtualization, System Upgrades & Migrations, Disaster Recovery Planning, Security Infrastructure Performance Monitoring & Tuning, Compliance & Regulatory Controls, Scripting & Automation, Troubleshooting & Problem Resolution, User Access Control & Identity Management, Active Directory Management
Career Experience
MSP (2007-Present)
Senior Network Infrastructure Administrator
- Lead optimization and maintenance of network infrastructure for small and medium-sized businesses, encompassing 2-150 employees, for seamless operations and increased productivity. Develop comprehensive documentation, including detailed Visio diagrams, to facilitate efficient processes and troubleshooting for IT team and clients. Establish and nurture client relationships by actively engaging with clients to understand their current IT needs, providing regular updates, and collaborating on budget planning for future projects. Manage servers proficiently, encompassing diverse platforms such as Exchange 2003, 2007, 2010, 2013, 2016, Office 365, Cloud-based Hosted Exchange, Windows Server 2008R2, 2012 R2, 2016, 2019, Active Directory, DHCP, DNS, Mac OS X Open Directory, File Server, and Print Server. Handle setup, deployment, management, and troubleshooting of Mac OS X, Windows 7, 10, and 11, providing seamless user experiences and technical support. Manage Layer 3 switch operations on HP Procurve, Aruba, and Cisco switches, ensuring reliable and efficient data routing. Implement Radius on Corporate Wi-Fi and LAN, providing secure authentication and access control.
Key Accomplishments:
- Orchestrated seamless migrations from on-premises infrastructure to Microsoft 365 hosted Exchange and SharePoint.
- Designed and deployed Ruckus and Cisco Meraki wireless networks, employing Ekahau Site Survey software for precise planning and optimization.
- Implemented Mobile Device Management (MDM) solutions for both company-owned devices and BYOD scenarios, enhancing security and data protection measures.
- Managed FortiGate & SonicWALL firewalls, implementing robust security measures to safeguard against potential threats.
- Oversaw network management for multiple locations, utilizing site-to-site IPsec tunnels, SD-WAN, and MPLS technologies to ensure secure and efficient communication.
- Configured Multi-Factor Authentication (MFA) for critical access points, including Office 365, Terminal Services, Desktop Login, and VPN connections, enhancing overall security.
- Implemented MFA using DUO, Microsoft Office 365, Deep Net, and Jumpcloud, elevating security posture of client systems.
Education
AA Degree – Computer Science
