Senior Security Analyst (MDR-US/NYC)

The role

You will serve as a founding analyst for Apollo, the managed detection and response service. You will lead investigations across cloud, identity, endpoint, and SaaS environments to determine threat impact and drive response.

What you will do

• Own the investigation and the decision from pickup to close
• Reconstruct attacker activity across identity, cloud, endpoint, and SaaS telemetry
• Recommend and execute containment within authorized limits
• Work by risk and reach verdicts inside response targets
• Provide summaries, reasoning, and final analysis to customers
• Run hypothesis-driven and AI-assisted threat hunts
• Shape investigative standards, response workflows, and reporting
• Feed verdicts and patterns into detection engineering and product

Required qualifications

• 4+ years of hands-on security operations experience in a SOC, MSSP, or MDR environment, at a senior or Tier 3 level
• Proven investigation depth across identity (Okta, Entra ID), cloud (AWS, Azure, GCP), endpoint (EDR), and SaaS (Microsoft 365, Google Workspace)
• Fluency in attacker tactics, techniques, and procedures (MITRE ATT&CK)
• Rigor about evidence
• Hands-on experience working with AI-assisted investigation or automation
• Strong customer-facing instincts
• Excellent written communication
• A high personal bar for the quality of analysis
• Comfortable working a defined shift as analyst coverage expands to 24x7

Nice to have

• Experience in a multi-tenant MDR or MSSP practice
• Experience writing or tuning detection rules (Sigma, YARA-L, SPL, KQL, or similar)
• Incident command experience, including customer executive briefings
• Dedicated threat hunting or DFIR background
• Daily hands-on use of AI or agentic coding tools to build your own tooling

Benefits

• Top-of-market equity component
• Opportunity to shape the service and standards
• Real world impact protecting companies
• Broad range of experience across environments
• Innovative culture with autonomy

About the company

Artemis is building the future of AI-driven cybersecurity. The company's platform uses AI agents to detect, investigate, hunt, and respond to threats at machine speed.