Linux Infrastructure Systems Engineer; RHEL

Required qualifications:

• This position requires the candidate possess a minimum of Top-Secret clearance with the ability to obtain TS/SCI. The candidate must maintain the clearance.
• Bachelor’s degree in Engineering, Computer Technology or related field and 5+ years of experience; OR Master’s degree in Engineering, Computer Technology or related field and 3+ years of experience. An additional four (4) Equivalent experience in lieu of a degree will be considered
• Candidate must meet DoD 8140 foundational requirements for a System Developer work role with a proficiency of intermediate or above
• Hands‑on experience with Linux and Windows‑based operating systems to include a deep, core understanding of the operating systems’ concepts and functionality, experience building and configuring systems from scratch, experience troubleshooting functionality, and performing all functions leveraging automation tooling where possible
• Experience in installing, configuring, and deploying services from scratch to include configuration of security, certificate, and authentication settings following industry standard best practices
• Experience creating, modifying, and troubleshooting Ansible playbooks for system configuration and system sustainment activities (e.g. patching)
• Experience in the use of scripting languages such as Ansible, Bash, or Python for task automation such as package installation and configuration across an array of physical and/or virtual hosts
• Experience using Git to include collaboration, configuration management tracking, and code review facilitation
• Experience creating & updating process documentation to include infrastructure deployments, application installation, and system sustainment activities
• Direct experience with host/application integration into an Identity and Access Management (IDAM) system such as Active Directory, FreeIPA, or other similar systems, including deploying PKI infrastructure & troubleshooting PKI related issues
• Strong, direct experience with RHEL 8.x and above (or similar Linux OS) to include building systems up from bare metal, performing software package installation and update, operating system configuration, and application troubleshooting
• Strong, direct experience troubleshooting application & system level issues caused by PKI configuration, networking, firewalls, or other similar OS/infrastructure layers
• Familiarity in leveraging automation tools to perform security hardening to include patching for vulnerabilities, configuration changes, experience configuring and troubleshooting SELinux, and debugging/troubleshooting system and application functionality because of hardening changes

Desired

Qualifications:

• Hands‑on experience with Kubernetes to include troubleshooting containerized workloads, investigating node related issues, and deploying/upgrading solutions using YAML manifests, Helm, or Git Ops CD
• Experience with multiple Red Hat tools, to include Red Hat Open Stack (RHOSP), Red Hat Open Shift (RHOCP), Red Hat Open Stack Services on Open Shift (RHOSO), and Red Hat Satellite
• Experience deploying, configuring, managing databases such as deploying/operating Postgre
  
  SQL/MySQL (backups, HA patterns)
• Experience deploying, configuring, managing multi‑factor authentication (MFA) technologies such as ADFS/Keycloak/Okta, SAML/ODIC
• Experience implementing and leveraging system monitoring tools, to include log aggregation (Splunk, Elasticsearch), infrastructure telemetry (Sensu, Prometheus), and visualization (Grafana, Kibana)
• Experience with engineering infrastructure solutions that maximize uptime, reduce repetitive tasking, and mitigate human error
• Experience with out‑of‑band (OOB) technologies to manage remote resources such as iDRAC/iLO/IPMI
• Ability to express yourself confidently, concisely, and accurately through written and oral communications
• Excellent interpersonal skills and the ability to collaborate effectively with management, the customer and tenants across DoD
• Detail oriented, can multi‑task, and can work with minimal supervision

Benefits:

Peraton offers enhanced benefits to employees working on this critical National Security program, which include heavily subsidized…