We are looking for a highly skilled Linux Systems Engineer to help design, build and maintain our internal services.  A successful candidate will have experience self-hosting and building services from open-source tools. 

Requirements

• B.S. in relevant field (Computer Science, Computer Engineering, etc.) with 8+ years’ experience, or 10+ years’ experience in a relevant field.
• Must be able to obtain a security clearance.
• Must be able to work out of the Leesburg office 5 days a week.

Responsibilities

• Make objective and technically sound recommendations for potential future hardware and software purchases.
• Provide O&M on existing Linux based services.
• Provide tier 2/3 technical support.
• Manage user input and make suggestions for service improvements.

Required Skills

• Experience installing software and patches on self-hosted Linux-based computers.
• Experience with configuration management software.
• Experience with virtualization and containerization.
• Highly familiar with both Linux and Mac systems (Linux servers, Mac laptops).

Desired Skills

• Administration and performance tuning of open-source software (e.g. Apache, NGINX, squid, OpenSearch, Nextcloud, Zabbix, AWX, etc.)
• Experience with monitoring systems preferred (Zabbix, Nagios, or similar OpenSource solutions).
• Ability to write scripts as needed (e.g., shell scripts, Python, Perl, PHP, etc.)
• Understanding of PKI, CA's, SMIME, etc.
• Experience deploying / maintaining common business services
  • e-mail (Postfix / Dovecot / etc.)
  • Calendars (CalDav)
  • Chat
  • Password safes
  • Proxy servers
  • VTC 
  • File share
  • Wiki