System Administrator/Back End Developer with Security Clearance

Signature Federal Systems is seeking a strong, mid-level System Administrator/Back End Developer to support the Webmaster’s office. Required:
3+ years of experience with systems administration.
Bachelor's degree in Systems Administration, Computer Information Systems, or Computer Science, or 5+ years total of experience with systems administration in lieu of a degree.
Experience performing Linux server maintenance, patching, configuration management, or system hardening.
Experience designing, implementing, and maintaining production-grade AWS environments.
3+ years OOP language experience (PHP experience preferred).
Experience developing web apps with HTML, CSS, and JavaScript.
SQL proficiency and experience with an RDBMS (MySQL preferred). Nice to Have:
Experience developing websites using the Joomla! CMS