RHEL Network Management Systems (NMS) Engineer (w/ active Secret)

Critical Solutions•Norfolk, VA

3d•Onsite

About The Position

The RHEL Network Management Systems (NMS) Engineer designs, deploys, administers, and supports enterprise network management infrastructure. The role combines Red Hat Enterprise Linux 8 back-end operations with application-level administration of NMS tool suites, ensuring the platform is available, optimized, and security-compliant for network monitoring, fault detection, and performance management. The engineer provisions and maintains RHEL 8 servers across physical, virtual, and air-gapped environments; tunes systems for high-volume telemetry and configuration data; manages security updates and vulnerabilities; automates operations; enforces security policies and STIG compliance; and manages storage for NMS databases and syslog. The role also supports enterprise NMS applications, integrates monitoring systems with asset databases and ITSM platforms, and configures polling, telemetry, alerting, and notification capabilities. This is a full-time, 100% onsite position in Norfolk, Virginia. Candidates must have an active DoD Secret clearance, be U.S. citizens, and successfully complete the required federal background investigation and fingerprinting. The stated salary range is $87,000–$112,000 per year; actual compensation depends on multiple factors.

Requirements

Bachelor's degree in computer science, IT, Network Engineering, or an equivalent technical field.
Hands-on experience administering RHEL 8 environments.
Advanced knowledge of systemd, rsyslog, journald, and RHEL troubleshooting utilities such as top, iotop, netstat, and tcpdump.
Deep knowledge of SNMP v3, Syslog, SSH, ICMP, NetFlow, and TACACS+/RADIUS.
Proficiency in Ansible and scripting languages such as Python and Bash.
Must possess an active DoD Secret clearance.
Must be a U.S. citizen and successfully pass the required federal background investigation and fingerprinting.

Nice To Haves

RHCSA or RHCE certification.

Responsibilities

Provision, configure, and maintain RHEL 8 servers hosting core NMS applications in physical, virtual, and air-gapped environments.
Tune Linux kernel parameters, memory allocation, and storage subsystems to process telemetry and configuration data without data loss.
Manage package deployments and apply security errata and operating system updates using Red Hat Satellite or custom repositories.
Create and maintain Ansible playbooks and scripts to automate server provisioning, user management, and recurring NMS operational tasks.
Enforce Linux security policies, access controls, and STIG compliance.
Configure and expand LVM structures to support high-write NMS databases and syslog partition scaling.
Deploy, upgrade, and troubleshoot enterprise NMS applications, including Open Text NNMi, Open Text Network Automation, Cisco Catalyst Center, Arista Cloud Vision, and Aruba Airwave.
Integrate NMS engines with CMDB asset databases and ITSM platforms such as ServiceNow through APIs.
Configure polling intervals, SNMP MIBs and traps, and NetFlow collectors.
Develop alerting logic, thresholds, and notification profiles to reduce alert fatigue while surfacing critical outages.
Support fault and performance monitoring, configuration and change control, traffic analytics, and network capacity planning.