Senior Security Analyst, AI-Driven MDR & Threat Hunting

Stealth Cybersecurity AI Startup; New York (NY); Hybrid; USD 120,000 - 160,000; Full time

Job summary

Artemis is building the future of AI-driven cybersecurity, defending enterprises with AI agents and a live model of each environment. We’re seeking a Senior Security Analyst to lead investigations across cloud, identity, endpoint, and SaaS, decide outcomes, guide customers, and help shape Apollo’s managed detection and response service.

You will work alongside engineers to extend the platform, handle complex incidents from signal to resolution, and operate within a 24×7 coverage model.

Qualifications

• 4+ years of hands-on security operations in a SOC, MSSP, or MDR environment.
• Deep investigations across identity, cloud, endpoint, and SaaS.
• Fluency in attacker tactics, techniques, and procedures (MITRE ATT&CK).
• Hands-on experience with AI-assisted investigation or automation.
• Strong customer-facing instincts and excellent written communication.
• Willingness to work a 24×7 shift.

Responsibilities

• Own the investigation and the decision – take cases from pickup to close with clear rationale.
• Investigate with depth across identity, cloud, endpoint, and SaaS telemetry.
• Drive response with the customer in control and outline full impact of actions.
• Move at the speed the threat demands and prioritize high-severity cases.
• Be the security partner customers trust and communicate outcomes clearly.
• Hunt threats beyond alerts and contribute to service design and improvements.

Skills

SOC operations

Investigation depth

MITRE ATT&CK

AI-assisted investigation

Customer-facing

Written communication

24x7 shift

Tools

Sigma

YARA-L

SPL

KQL

Job description

Artemis is building the future of AI-driven cybersecurity, defending enterprises with AI agents and a live model of each environment. We’re seeking a Senior Security Analyst to lead investigations across cloud, identity, endpoint, and SaaS, decide outcomes, guide customers, and help shape Apollo’s managed detection and response service.

You will work alongside engineers to extend the platform, handle complex incidents from signal to resolution, and operate within a 24×7 coverage model.