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Network Security Engineer

PlanetArt
Woodridge, USA
Full-time
Mid · 3–5 years experience
Onsite
Discovered Today
linuxpowershellpythonsplunk

Full Job Posting

Key Responsibilities

  • Review Cisco and Palo Alto firewall policies, access controls, segmentation, VPNs, and security logs.
  • Assess Windows and Linux server hardening, patching, authentication, permissions, and audit logging.
  • Verify SIEM collection of firewall, network, server, and endpoint logs; investigate logging gaps.
  • Monitor SIEM and Endpoint Detection and Response (EDR) alerts for suspicious activity.
  • Triage alerts: validate detections, distinguish false positives, assess severity, and escalate incidents.
  • Correlate network, server, identity, and endpoint events to identify affected systems and timelines.
  • Configure EDR policies, detection settings, exclusions, and alerts through approved change procedures.
  • Coordinate incident containment and remediation with infrastructure teams; track issues to resolution.
  • Document investigations and response procedures; evaluate AI use in analysis and detection.
  • Develop, test, and maintain security tools for log analysis, alert triage, and automation.
  • Recommend security improvements to the teams responsible for network and server configuration.

Requirements

  • What You Should Have
  • Skills, Qualifications, and Requirements
  • Bachelor’s degree in Computer Science, Cybersecurity, or equivalent experience.
  • 3–5 years of experience in network security, security operations, incident response, or a related role.
  • Working knowledge of Cisco technologies and Palo Alto firewalls, including interpreting configurations, policies, and logs; understanding of TCP/IP, DNS, NAT, VPNs, and segmentation.
  • Understanding of Windows and Linux server security, including hardening, patching, authentication, permissions, and audit logging.
  • Knowledge of Security Information and Event Management (SIEM), including log collection, forwarding, ingestion, parsing, correlation, and alert monitoring.
  • Experience with EDR configuration and investigation, including policies, detection settings, exclusions, endpoint telemetry, and response capabilities.
  • Ability to triage alerts as a SOC analyst would, gather evidence, prioritize threats, and escalate incidents with clear documentation.
  • Strong analytical, troubleshooting, and communication skills, with the ability to collaborate across security, network, and infrastructure teams.
  • Understanding of how artificial intelligence (AI) can be integrated into security workflows, including validating AI-generated findings, protecting sensitive data, and maintaining analyst oversight.
  • Ability to develop, test, and document security scripts and tools using Python, PowerShell, or similar languages, including integrations with security tool APIs.
  • Preferred: Splunk experience, including SPL searches, dashboards, and configuring and tuning alerts, thresholds, schedules, and notifications.
  • What You Can Expect
  • Working Conditions
  • Work is performed in an office environment with low to moderate noise levels.
  • Occasional lifting of up to 20 pounds.
  • Position requires regular, continuous use of computer.
  • Position requires regular sitting and standing.
  • Position requires regular interaction with team members through the following methods: in-person, phone, WebEx, Slack, or email.
  • May require occasional travel.
  • This is a hybrid position; employees are expected to be in the office three days per week (Monday, Tuesday, and Thursday) with the option of working remotely two days (Wednesday and Friday).

Benefits

  • PlanetArt offers a comprehensive benefits package, including:
  • Health, Dental, and Vision Insurance
  • Life Insurance
  • 401(k) with matching
  • Excellent Work/Life Balance – Paid Time Off, Sick Days, Paid Holidays, and Floating Holidays
  • Employee Product Discounts

Preferred Qualifications

  • Preferred: Splunk experience, including SPL searches, dashboards, and configuring and tuning alerts, thresholds, schedules, and notifications.

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