SOC Investigation Specialist (Train AI Models Part Time!)

Responsibilities

• Review, monitor, and evaluate SOC alerts and investigation outputs based on predefined scenarios and criteria.
• Distinguish true positives from false positives by validating investigative evidence and alert context.
• Perform end-to-end security investigations when required, including log analysis, entity pivoting, timeline reconstruction, and evidence correlation.
• Assess the correctness, completeness, and quality of SOC investigations produced by automated or human workflows.
• Apply consistent investigative judgment while recognizing that multiple valid investigation paths may exist for the same alert.
• Make clear binary determinations (e.g., ACCEPT / PASS) while also producing detailed ground-truth investigations when required.
• Use Splunk extensively to pivot across logs, entities, and timelines, including reading and reasoning about SPL queries.
• Maintain clear and accurate documentation of investigative steps, assumptions, evidence, and conclusions.
• Collaborate with program leads and other expert annotators to uphold high-quality investigation and annotation standards.
• Mentor or support other analysts where applicable, particularly in long-term or lead annotator roles.

Requirements

• 3+ years of hands-on experience as a SOC analyst in a production SOC environment (Tier 2 or above strongly preferred).
• Strong understanding of alert triage, incident investigation workflows, and evidence-based decision-making under time constraints.
• Mandatory hands-on experience with **Splunk**, including:
• Conducting investigations using Splunk
• Reading, understanding, and reasoning about SPL queries
• Pivoting between logs, entities, and timelines

• Proven ability to evaluate SOC investigations and determine whether conclusions are valid, incomplete, or incorrect.
• Strong investigative judgment and comfort making decisive evaluations.
• Fluent English (written and spoken) with strong documentation and communication skills.

Nice to Have

• Experience with Endpoint Detection & Response (EDR) tools such as CrowdStrike Falcon, Microsoft Defender for Endpoint, or SentinelOne.
• Experience analyzing cloud security logs and signals:
• AWS (CloudTrail, GuardDuty)
• Azure (Activity Log, Defender for Cloud)
• GCP (Cloud Audit Logs)

• Familiarity with Identity & Access Management platforms such as Okta Identity Cloud or Microsoft Entra ID (Azure AD).
• Experience with email security tools like Proofpoint or Mimecast.
• SOC leadership or mentoring experience.
• Basic scripting experience (Python or similar).
• Security certifications (optional): GCIA, GCIH, GCED, Splunk certifications, Security+, CCNA, or cloud security certifications.

Why Join

• Work on cutting-edge SOC automation and AI-driven investigation systems.
• Apply real-world SOC expertise to shape how future security teams investigate and respond to threats.
• Take ownership of high-impact investigative evaluations and ground-truth security cases.
• Collaborate with experienced SOC practitioners, security engineers, and AI teams.
• Join Mercorâs global network of vetted security professionals.