Security Operations Analyst: Threat Triage & Intel

Mastery Logistics Systems; Chicago (IL); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Medical, Dental & Vision

Life & AD&D Insurance

Legal & Employee Assistance

401(k) with 4% Match

Flexible PTO

Giving Back — St. Jude Children's R

Job summary

Mastery Logistics Systems is seeking a Security Operations Analyst to monitor, triage, and investigate security alerts across our Azure environment and MasterMind platform. You’ll work with our Security Operations Engineer and Team Lead to contain threats using established playbooks.

This role suits a curious, detail-oriented analyst with SOC experience who thrives under pressure and communicates findings clearly to both technical and non-technical teammates.

Qualifications

• 2+ years of experience in security operations, IT, or a related alert-driven role.
• Familiarity with SIEM platforms (Microsoft Sentinel or comparable).
• Working knowledge of MITRE ATT&CK and Cyber Kill Chain frameworks.

Responsibilities

• Monitor and investigate security alerts across Microsoft Sentinel and Mastery's Azure environment, distinguishing real threats from noise.
• Follow the playbook: execute documented triage and escalation procedures, taking containment or remediation action when appropriate.
• Document investigation notes that are clear and defensible for the team, auditor, or customer.
• Recognize patterns: apply Cyber Kill Chain and MITRE ATT&CK concepts to identify what an alert is telling you.
• Escalate what matters: know when and how to hand off with context for fast action.
• Flag false positives, missed detections, and visibility gaps back to the team.
• Support detection tuning: flag false positives, missed detections, and visibility gaps back to the team that builds and tunes the rules.
• Grow with the team: take on stretch assignments — basic scripting, log analysis, evidence collection — toward more senior SecOps work.

Skills

Security operations

SIEM

MITRE ATT&CK

Cyber Kill Chain

Communication

Pressure resilience

Tools

Jira

Microsoft Sentinel

Azure

Job description

Mastery Logistics Systems is seeking a Security Operations Analyst to monitor, triage, and investigate security alerts across our Azure environment and MasterMind platform. You’ll work with our Security Operations Engineer and Team Lead to contain threats using established playbooks.

This role suits a curious, detail-oriented analyst with SOC experience who thrives under pressure and communicates findings clearly to both technical and non-technical teammates.