Senior Enterprise Security Engineer: Email & Threat Hunting

Influx Infosys; Tallahassee (FL); On-site; USD 95,000 - 135,000; Full time

Job summary

Influx Infosys seeks an experienced Systems Security Specialist – SA5 in Tallahassee, FL to provide hands-on security engineering, operations, email security administration, incident response, and threat hunting for a large enterprise environment.

The consultant will administer security technologies, configure policies, monitor health, and perform incident response with cross-team coordination across Defender, Cortex, Tanium, Proofpoint, Tessian, and Abnormal Security.

Qualifications

• 7+ years of progressively responsible IT and cybersecurity experience in enterprise environments.
• 4+ years of recent hands-on production experience with Palo Alto Cortex and Tanium, including Cortex for Endpoint and Tanium Comply Modules.
• 3+ years of recent hands-on enterprise email security experience with Proofpoint, Tessian, and Abnormal Security.
• 3+ years of Microsoft Exchange Administrator experience, including Exchange Online, mail flow, transport rules, connectors, and quarantine.
• 3+ years of hands-on security incident response experience covering alert triage, investigation, containment, and post-incident documentation.
• 2+ years of hands-on threat hunting across endpoint, identity, email, network, and cloud telemetry.

Responsibilities

• Security Platform Administration across Defender, Cortex, Tanium, Proofpoint, Tessian, and Abnormal Security.
• Configure, tune, maintain, and troubleshoot security policies, rules, integrations, connectors, exclusions, alerts, and automated actions.
• Monitor platform health, licensing, utilization, sensors/agents, data flow, and configuration drift.
• Identify security control gaps, conflicting configurations, integration issues, and opportunities for optimization.
• Administer Microsoft Exchange Online and enterprise email security architecture.
• Investigate phishing, business email compromise, and anomalous email activity; coordinate across tools.
• Perform root‑cause analyses and document incident chronology and corrective actions.
• Respond to high-priority security incidents within established response-time requirements.

Skills

Security engineering

Security operations

Email security

Incident response

Threat hunting

Palo Alto Cortex

Tanium

Exchange Online

Microsoft Defender

Tools

Proofpoint

Tessian

Abnormal Security

PowerShell

Job description

Influx Infosys seeks an experienced Systems Security Specialist – SA5 in Tallahassee, FL to provide hands-on security engineering, operations, email security administration, incident response, and threat hunting for a large enterprise environment.

The consultant will administer security technologies, configure policies, monitor health, and perform incident response with cross-team coordination across Defender, Cortex, Tanium, Proofpoint, Tessian, and Abnormal Security.