Security Engineer – EDR, Threat Hunting & Email Security

CornerStone Technology Talent Services; Farmers Branch (TX); On-site; USD 110,000 - 150,000; Full time

Job summary

CornerStone Technology Talent Services seeks Security Engineers for an expanding U.S. security team.

These positions provide hands-on engineering and operational support across endpoint detection and response, email security, vulnerability reporting, and threat intelligence. Engineers will independently configure, troubleshoot, and improve security platforms while turning data into detections, reporting, and actionable findings for incident response and risk reduction.

Qualifications

• Hands-on experience engineering and administering enterprise EDR platforms.
• Ability to independently configure, troubleshoot, and enhance security tools.
• Experience with threat hunting, detection tuning, alert investigation, and security automation.
• Knowledge of email security gateways and DKIM and DMARC.
• Experience working with vulnerability data, dashboards, and security reporting.
• Strong analytical, troubleshooting, and communication skills.
• Ability to work collaboratively across teams and time zones.

Responsibilities

• Configure, administer, and improve enterprise endpoint detection and response platforms.
• Conduct threat hunting and develop repeatable detections, policies, and automated workflows.
• Improve security telemetry, alert quality, and escalation accuracy.
• Investigate security events and support incident response activities.
• Administer email security gateway policies, rules, and authentication controls.
• Develop and improve vulnerability dashboards and reports.
• Coordinate incident and operational handoffs with international teams.
• Collaborate with infrastructure teams and security technology vendors.

Skills

EDR platforms

Threat hunting

Security automation

Email security

Vulnerability dashboards

Security reporting

Analytical skills

Communication

Team collaboration

Troubleshooting

Incident response

Tools

SentinelOne

CrowdStrike

Email security gateways

Vulnerability assessment platforms

Job description

CornerStone Technology Talent Services seeks Security Engineers for an expanding U.S. security team.

These positions provide hands-on engineering and operational support across endpoint detection and response, email security, vulnerability reporting, and threat intelligence. Engineers will independently configure, troubleshoot, and improve security platforms while turning data into detections, reporting, and actionable findings for incident response and risk reduction.