Graystone Group

Remote Sr. SOC Analyst, Tier III

Posted: Oct 27, 2025

Job Description

About the CompanyOur client is an international cybersecurity firm protecting government organizations, critical infrastructure, and enterprises worldwide. With cutting-edge tools and a mission-driven culture, they safeguard against some of today’s most advanced cyber threats.About the RoleWe are seeking a Tier 3 SOC Analyst to join the team. As a Tier 3 analyst, you will handle incidents escalated from Tier 1 & Tier 2, diving deeper into alerts, analyzing patterns, and identifying potential threats. You’ll leverage SIEM tools like Crowdstrike, Splunk, and Microsoft Defender to investigate incidents, reduce false positives, and escalate complex cases when needed.This is an ideal role for someone who has a strong foundation in SOC operations and wants to expand their skills in advanced investigations, threat hunting, and incident response.Key ResponsibilitiesInvestigate security alerts escalated by Tier 1 & Tier 2 analysts and determine root cause.Correlate data across host, network, identity, and log sources to validate potential incidents.Tune SIEM alerts and reduce false positives to improve detection effectiveness.Conduct threat hunting activities using indicators of compromise (IOCs), adversary TTPs, and internal datasets.Support the development and execution of runbooks and escalation processes.Escalate complex or confirmed incidents to Tier 3 or Incident Response teams.Document investigation steps and findings for both technical and management audiences.Collaborate with internal IT, application, and infrastructure teams during investigations.Qualifications5+ years of SOC or security operations experience4+ years of experience with the following technologies: CrowdStrike, Splunk and Microsoft DefenderDemonstrated ability to analyze and correlate host, network, and identity data.Experience tuning alerts, reducing false positives, and validating security incidents.Familiarity with threat intelligence (IOCs, TTPs) and their application in incident detection.Proficiency with Windows, macOS, and Linux environments.Strong communication and documentation skills.Analytical, curious, and adaptable problem solver.Why JoinPlay a key role in protecting global organizations from advanced cyber threats.Work with leading SOC tools and technologies in a collaborative environment.Gain exposure to advanced investigations, incident response, and threat hunting.Join a mission-driven firm with opportunities to grow your skills and career.

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