Nagios XI Monitoring Engineer (Windows/Linux)

Unisys Corporation; Philadelphia (Philadelphia County); On-site; USD 90,000 - 120,000; Full time

Job summary

Unisys Corporation in Philadelphia is seeking a Monitoring Engineer with 3+ years of experience to administer Nagios XI in a mixed Windows/Linux environment. You will own monitoring coverage, implement custom checks, and optimize alerting for reliability.

Join a collaborative IT team and help scale our monitoring infrastructure. This role emphasizes independence, initiative, and clear communication with cross-functional groups to translate service goals into actionable checks and automation

Qualifications

• 3+ years of systems/network administration experience, including 2+ years administering Nagios XI in production.
• Proficient in Bash and/or Python for Linux checks and PowerShell for Windows checks via NCPA.
• Experience with SNMP, NRPE/NCPA, syslog and common monitoring protocols.
• Strong networking fundamentals (TCP/IP, ports, firewalls) as they relate to monitoring connectivity.
• Self-motivated with ability to work independently.
• Excellent communication skills to translate monitoring data for teams and leadership.

Responsibilities

• Maintain and administer Nagios XI platform (upgrades, patches, backups, health).
• Onboard new devices, servers, and services into monitoring as infrastructure grows.
• Design, build, and maintain custom checks and monitoring scripts across Windows and Linux.
• Tune alerting and thresholds to reduce false positives while ensuring real issues are 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

Nagios XI

Bash/Python scripting

PowerShell

SNMP

NRPE/NCPA

Syslog

TCP/IP basics

Independent worker

Communication skills

Education

Bachelor's degree in Computer Science or related field

Tools

Nagios XI

Job description

Unisys Corporation in Philadelphia is seeking a Monitoring Engineer with 3+ years of experience to administer Nagios XI in a mixed Windows/Linux environment. You will own monitoring coverage, implement custom checks, and optimize alerting for reliability.

Join a collaborative IT team and help scale our monitoring infrastructure. This role emphasizes independence, initiative, and clear communication with cross-functional groups to translate service goals into actionable checks and automation