Staff Incident Response Analyst

18 hours, 32 minutes ago
Full-time
Lead
Cybersecurity
Alphasense

Alphasense

Alphasense is a global leader in providing high-quality gas sensors and air quality monitors to industrial OEMs. With over 25 years of experience, the company offers a wide range of innovative gas sensor technologies for various applications, including...

Industrial Conglomerates
51-250
Founded 1996

Description

  • Own L2 escalations across all severity levels and act as technical lead for Sev2+ incidents.
  • Scope incidents quickly by determining blast radius, affected assets, and attacker objectives from available telemetry.
  • Make and document containment decisions such as endpoint isolation, account suspension, token revocation, and network blocking.
  • Maintain forensically sound incident timelines with ordered evidence, source attribution, and chain-of-custody.
  • Communicate incident status and findings to the Security Operations Manager for upward briefing.
  • Drive incidents to documented closure, including root cause, attacker path, affected assets, and defensive gaps.
  • Perform deep endpoint triage and host forensics using EDR and Windows/Linux artifact analysis.
  • Lead AWS and GCP incident response, including cloud log forensics, IAM chain reconstruction, and service-specific investigations.
  • Investigate identity provider and CIAM incidents involving audit logs, session anomalies, token misuse, and federated identity attacks.
  • Conduct threat hunts in the SIEM and translate findings into detection recommendations or rule drafts.
  • Support L2 analysts and the MDR partner by providing technical direction, reviewing escalation quality, and coaching on missing context.
  • Document investigation methodology clearly so closed cases can serve as learning material for L2 analysts.

Requirements

  • 6+ years of hands-on incident response experience, including at least 3 years at a senior or staff technical level.
  • Expert-level EDR proficiency with tools such as CrowdStrike Falcon or SentinelOne, including remote triage and custom detection rule authorship.
  • Deep AWS incident response capability, including CloudTrail forensics, IAM chain analysis, EC2 and Lambda investigation, and IMDS/assumed-role abuse patterns.
  • Strong Windows forensics skills with the ability to reconstruct attacker activity from artifacts such as Prefetch, MFT, Shimcache, event logs, and registry data.
  • Solid Linux forensics experience covering persistence mechanisms, cron, SUID analysis, process anomalies, and log artifact interpretation.
  • Hands-on SIEM investigation and detection experience with tools such as Google SecOps/Chronicle, Splunk, or Microsoft Sentinel.
  • Identity incident response experience in an enterprise IdP such as Okta or Entra ID, including audit log forensics and admin abuse pattern analysis.
  • Demonstrated ability to scope and lead Sev1 incidents autonomously, including containment decisions and cross-functional coordination.
  • Strong technical writing skills for timelines, evidence summaries, and escalation handoffs.
  • MITRE ATT&CK fluency for describing attacker behavior.
  • Memory forensics experience using Volatility or equivalent is preferred.
  • Malware analysis skills, including static analysis, dynamic sandbox review, and YARA rule authorship, are preferred.
  • GCP incident response experience using Cloud Audit Logs, VPC Flow Logs, and IAM policy analysis is preferred.
  • CIAM forensics experience with platforms such as Auth0 or Cognito is preferred.
  • Experience receiving and evaluating escalations from an MSSP or MDR partner is preferred.
  • Familiarity with CSPM tools such as Wiz, Prisma Cloud, or Orca is preferred.
  • DFIR certifications such as GCFE, GCFA, GCFR, GREM, or GCIH are preferred.
  • Prior experience in a SaaS company, financial services, or another regulated environment is preferred.

Interested in this position?

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