System Administrator

As a member of the CORESense hosting team, the System Administrator is responsible for the implementation, maintenance, monitoring and troubleshooting of systems and network devices located in the CORESense private cloud and on premise at client retail locations.


  • Setup and configuration of Linux servers and systems in conjunction with supporting open source software located in the CORESense private cloud.
  • Manage and support remote fleet of Linux based point-of-sale machines
  • Continued development and maintenance of automated scripts for environment configuration
  • Research and troubleshoot environment issues to determine root cause
  • Maintain systems and procedures in accordance with PCI compliance
  • Perform rotational on-call duties
  • Interact with clients as needed

Technical Competencies/Skills:

  • Working knowledge of Linux based systems and architectures
  • Strong background in Linux (Ubuntu preferred) system administration, shell scripting (Python and Bash preferred).
  • Experience with NGINX web server installation, configuration, and support
  • MySQL database administration (data integrity, performance, blocking and deadlocking, replication, backup, connectivity and security)
  • Solid understanding of TCP/IP networking, firewalls and OpenVPN
  • DNS, LDAP, Domain and SSL Certificate management
  • Use of source control systems (Git preferred)
  • Knowledge of monitoring and alerting concepts/tools (Nagios preferred)

Experience/Education/Training/or Equivalent Combination:

  • Bachelors in IT, Computers or relevant field
  • 3 +  years running high volumes of Linux servers (even personal servers)