CNO Test Engineer III

CNO Test Engineer III

Location: Hanover, MD  (On-site)

Security Requirement: US Citizen with an active Top Secret/SCI clearance with Polygraph required

Ring0 Technologies (“Ring Zero”) is hiring a motivated Software Test Engineer who is passionate about Cybersecurity. This position will be integrated into a cutting-edge Cybersecurity team and will be responsible for for supporting complex and challenging virtual machine testing environments.


  • Conduct Component and System Integration Level testing on complex software applications
  • Support a large virtual machine test environment used by multiple customers
  • Assume responsibility for maintenance, upgrades and monitoring of lab equipment running Windows and Linux
  • Promptly handle configuration, software, and hardware requirements generated by customers

Required work experience:

  • Strong scripting experience in Python, Perl, or other scripting language
  • 5+ years experience supporting of software development activities
  • 10 years experience utilizing Microsoft Windows and Unix-like operating systems
  • 10 years experience working with networking protocols such as TCP, UDP, IP, HTTP, DHCP, and DNS
  • 10 years experience performing testing in support of software development

Desired work experience:

  • Experienced with VMWare Workstation and/or ESXi
  • Experienced with Network File System storage
  • Experience with Docker/Kubernetes


  • Bachelor’s degree or equivalent experience
  • Experience in the technology industry
  • Strong written and verbal communication skills
  • Ability to understand highly technical information

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