Senior Systems Administrator - Linux with Security ...

Primary responsibility is the maintenance of a large ElasticSearch/MongDB cluster running on Linux on multiple domains, along with the Java application and web services. The system indexes millions of documents with hundreds more coming in every day. The application and web services support mission critical interfaces. This position requires strong skillsets administering Linux, ElasticSearch (cluster), MongoDB (cluster), working in a Cloud (AWS) infrastructure, and monitoring and resolving application or component issues. Will also require the ability to stand up new environments as needed in AWS to support testing. Must maintain Dev, Test, and Production environments. Will also serve as a backup Sysadmin to other Linux systems. **TS/SCI with CI Poly required.**Security+CE or higher certification (such as CASP or CISSP) required. Recent experience in the listed technologies required. AWS skills required - AWS certificate preferred. Excellent troubleshooting/problem solving skills required.Must understand how to harden/STIG all components of a system.Must know how to request and install PKI certificates.

Created: 2025-11-15