Senior System/Infrastructure Engineer
CurrentDesigned, purchased installed, supported and maintained all hardware in corporate office, including Cisco core, wireless controllers, and access points.Hardened Security of the networks as company was growing.Designed and implemented VLAN structures into existing layer-2 network.Implemented network architecture design and integration for international corporate offices in Chicago, Denver, New York, and London. VPN installation, maintenance and administration.Strong understanding of architecture and design in the active directory, and synchronization with Azure.VMware migrations and virtualizations local and in cloud.Implemented Active Directory, worked with currently documented best practices.Worked with Windows 2012, 2016 and 2019 servers.Built physical hosts virtual server environment, with guest Microsoft operating system. Upgraded VM hosts and updated guest servers. Implemented Cisco 5512, 2130, Meraki MX100, and MX250 firewall in corporate office, installed patches and upgrades. Implemented the necessary controls and procedures to protect information systems – security hardening for users. Performed periodical network penetration testing in all offices and continue working on securing corporate office environment. Monitored network usage, anticipated problems, and suggested solutions.Managed new office and expansion projects and work closely with colleagues to meet team goals, deadlines and improve processes and practices. Responsible for keeping support and maintenance contracts current. Purchased computer equipment upon management’s approval. Researched Internet circuit providers in New York and architected the solution for new office. Traveled to new office locations to complete network, conference room, branding displays and workstation setup. Worked with vendors to get best prices and services to save money for company.Supported corporate and remote office users and working with IT Team to resolve issues and provide solutions.
