George Mastrokostas

Experience

1. Linux Admin Implementation Engineer

   Pico

   Nov 2015 — Present · New York, NY, US

   Part of a small team that manages RedHat 7/8 High Frequency Trading Servers for multiple banks and clients. • Automate repetitive tasks using python/ansible/bash. Write custom ansible modules as needed.• Create new patching/update procedures depending on the Hardware and OS setup.• Deploy changes for client at the infrastructure level (DNS, Performance tuning, LVM, EnterPrise Onload, etc)• Long term Projects to normalize our multiple client environments.• Perform Quality Assurance testing for new servers before they enter production• Part of a small select Team which manages PTP time servers at a global scale for multiple banks and clients.• Frequent Linux/firmware patching of client hosted high frequency trading servers.• Plan, design, document and implement system changes with test and complete rollback plans.• Work closely with banks to address production issues and change requests.• Able to work in a collaborative team environment with different teams, Network/Application/Account Manager etc and provide recommendations to enhance current environment.• Effective communication regardless of the technical skill level of audience.

Education

• DeVry University

  Bachelor's, Technical Management Database Engineer specialization

  2011 — 2012

Skills

• Oracle
• Subnetting
• Vmware Esx
• Bash
• Openstack
• Tcp/Ip
• Oracle 11g
• Databases
• Vmware Workstation
• Centos
• Dns
• Ftp
• Python
• Snmp
• Apache
• Active Directory
• Windows Server
• Ssh
• Red Hat Linux
• Oracle Linux Vm
• Nmap
• Smtp
• Smb
• Sql
• Windows 2008
• Wireshark