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

Critical Solutions•Norfolk, VA

4d•Onsite

About The Position

The Network Management Systems (NMS) Engineer is responsible for the design, deployment, administration, and support of an enterprise network management infrastructure. This role blends Red Hat Enterprise Linux (RHEL) 8 back-end operations with comprehensive application-level management of NMS tools suites. The engineer ensures high availability, optimization, and security compliance of the platform performing critical network monitoring, fault detection, and performance management utilities.

Requirements

Bachelor's degree in computer science, IT, Network Engineering, or an equivalent technical field.
Hands-on experience administering RHEL 8 environments (RHCSA or RHCE certifications preferred).
Advanced knowledge of systemd, system logging (rsyslog, journald), and native RHEL troubleshooting utilities (top, iotop, netstat, tcpdump).
Deep knowledge of networking protocols including SNMP (v3), Syslog, SSH, ICMP, NetFlow, and TACACS+/RADIUS.
Proficiency in Ansible and scripting languages (Python, Bash) to run configuration infrastructure as code.
Must possess an active DoD Secret Clearance.
Selected candidate must undergo background investigation (BI) and finger printing by the federal agency and successfully pass the preceding to qualify for the position.
US CITIZENSHIP IS REQUIRED.

Nice To Haves

RHCSA or RHCE certifications preferred.

Responsibilities

Provision, configure, and maintain RHEL 8 servers hosting the core NMS applications across physical, virtual, and air-gapped environments.
Optimize Linux kernel parameters, memory allocation, and storage subsystems to handle massive telemetry and configuration data intake (SNMP, NetFlow, Syslog, SSH, SCP) without data loss.
Leverage Red Hat Satellite or custom repositories to manage package rollouts, applying routine security errata and OS updates.
Write and maintain Ansible playbooks and other language scripts to automate server provisioning, user management, and repetitive operational tasks related to NMS tool objects.
Enforce security Linux policies, access rules, and STIG compliance to ensure the monitoring platform resists compromise.
Configure and expand LVM (Logical Volume Manager) structures to manage high-write NMS databases and syslog partition scaling.
Deploy, upgrade, and troubleshoot enterprise-grade NMS applications (Open Text NNMi, Open Text Network Automation, Cisco Catalyst Center, Arista Cloud Vision, Aruba Airwave and others).
Architect and maintain integrations between NMS engines, CMDB asset databases, and ITSM platforms like ServiceNow via APIs.
Configure polling intervals, customize SNMP MIBs and traps, and set up NetFlow collectors to build clear network matrices.
Construct alerting logic, thresholds, and notification profiles to minimize alert fatigue while ensuring critical outages surface instantly.