Nagios XI Monitoring Engineer: Automate & Optimize

Unisys; Little Elm (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

Unisys is seeking a motivated Monitoring Engineer with 3+ years of experience, including 2+ years administering Nagios XI, in a mixed Windows/Linux environment. The role focuses on expanding monitoring coverage, designing custom checks, and tuning alerts to balance false positives with real issue detection.

The ideal candidate operates independently, collaborates with IT and network teams, and proactively evaluates new plugins and automation opportunities to continuously improve the monitoring

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field, or equivalent practical experience.
• 3 years plus of systems/network administration experience, including 2 years plus administering Nagios XI in a production environment.
• Scripting ability across platforms — Bash and/or Python for Linux checks, and PowerShell for Windows checks via NCPA.
• Working knowledge of SNMP, NRPE/NCPA, syslog, and common network/server monitoring protocols.
• Understanding of networking fundamentals (TCP/IP, ports, firewalls) as they relate to monitoring connectivity.
• Self-motivated and able to operate independently with minimal oversight.
• Strong communication skills, with the ability to translate technical monitoring data for other teams and leadership.

Responsibilities

• Maintain and administer the Nagios XI platform, including upgrades, patches, plugin updates, backups, and general platform health.
• Onboard new devices, servers, and services into monitoring as infrastructure grows, ensuring no gaps in coverage.
• Design, build, and maintain custom checks and monitoring scripts (NRPE, NCPA, SNMP, custom plugins) across Windows and Linux systems.
• Tune alerting and thresholds to reduce false positives while ensuring real issues are reliably detected.
• Monitor and optimize platform performance, including capacity, check latency, and database health.
• Document configurations, runbooks, and processes to keep monitoring logic transparent and maintainable.
• Partner with IT, network, systems, and application teams to identify monitoring gaps and translate business-critical services into checks.
• Proactively evaluate new plugins, integrations, and automation opportunities to continuously improve the platform.

Skills

Scripting

Bash

Python

PowerShell

SNMP

NRPE/NCPA

Nagios XI

Nagios Core

Networking basics

Independent work

Communication

Education

Bachelor's degree in Computer Science or related field

Tools

Nagios XI

Nagios Core

NRPE

NCPA

SNMP

PowerShell

Bash

Python

Job description

Unisys is seeking a motivated Monitoring Engineer with 3+ years of experience, including 2+ years administering Nagios XI, in a mixed Windows/Linux environment. The role focuses on expanding monitoring coverage, designing custom checks, and tuning alerts to balance false positives with real issue detection.

The ideal candidate operates independently, collaborates with IT and network teams, and proactively evaluates new plugins and automation opportunities to continuously improve the monitoring