Senior Security Analyst

Artemis is building the future of AI-driven cybersecurity, helping companies defend themselves effectively in an era where AI is fighting AI on the cyber battlefield. Our platform brings a new approach to the $100B security operations market, building a live model of each customer's environment and using AI agents to detect, investigate, hunt, and respond to threats at machine speed.

Job Overview

We're looking for a Senior Security Analyst to join Apollo, the managed detection and response service Artemis delivers on top of its platform, as one of its founding analysts. Apollo analysts are the senior security minds our customers count on: the people who determine what a threat really is, what it means for that business, and what happens next. You will be one of the few who establish how that work gets done before the team scales.

Responsibilities

• Own the investigation and the decision: Take cases from pickup to close: establish what happened, determine the impact and blast radius, set the verdict and severity, and put your reasoning on the record.
• Investigate with real depth: Reconstruct attacker activity across identity, cloud, endpoint, and SaaS telemetry: initial access, lateral movement, persistence, and exfiltration.
• Drive response, with the customer in control: Recommend and execute containment within each customer's authorized limits, with every action impact-previewed and reversible before it runs.
• Move at the speed the threat demands: Work by risk, acknowledge and reach a verdict inside the response targets for each severity, and keep the most consequential work moving first.
• Be the security partner customers trust: Your summaries, your reasoning, and your final analysis reach them in your own words.
• Hunt what nothing has alerted on yet: Run hypothesis-driven and AI-assisted threat hunts across customer environments, and turn what you surface into new cases and new detections.
• Help design the service, not just deliver it: Founding analysts shape what Apollo becomes: the investigative standards, the response workflows, the reporting customers receive, and the console the team works in.
• Make the platform sharper: Your verdicts, your reasoning, and the patterns you recognize feed straight into detection engineering and product.

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: you know what separates suspicious from confirmed.
• 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 your analysis.
• Comfortable working a defined shift as analyst coverage expands to 24x7.

Bonus

• Experience in a multi-tenant MDR or MSSP practice.
• Experience writing or tuning detection rules.
• Incident command experience.
• Dedicated threat hunting or DFIR background.
• Daily hands-on use of AI or agentic coding tools.

Why Work at Artemis?

• Join early enough to shape it.
• Make a real world impact.
• Range you cannot get anywhere else.
• Be challenged to be better than ever before.
• Push the boundaries of technology.
• Innovative culture.