Security Engineer - Incident Response

About the Role

We're looking for a Security Engineer with deep incident response experience to help defend Replit, a fast-moving, cloud-native AI vibe-coding platform. You'll lead investigations from first signal to root cause, coordinate containment across Security, SRE, and Engineering, and keep stakeholders informed while the incident is moving fast.

You'll write the scripts, automations, and tooling that take manual work out of triage, evidence collection, and containment, turning lessons from each incident into better detections, playbooks, and platform hardening.

Responsibilities

Incident Response

• Serve as incident commander or technical lead for security incidents, from detection and triage through containment, eradication, recovery, and post-incident review.
• Coordinate response across Security, SRE, Engineering, Legal, and leadership. Drive decisions under pressure and keep a clear record of actions taken.
• Communicate incident status, impact, and risk clearly to technical and executive audiences.
• Participate in and help shape the security on-call rotation.

Investigation & Forensics

• Investigate suspicious activity across cloud infrastructure, containers, identity systems, and application layers using SIEM, Cloud Logging, telemetry, and host and container artifacts.
• Determine scope, root cause, attacker behavior, and blast radius for confirmed incidents.
• Quickly assess whether emerging threats apply to Replit and whether we're already affected.

IR Automation & Tooling

• Build scripts, automations, and tools (Python, Go, Bash, or directly on Replit) that speed up response.
• Develop and maintain response playbooks and runbooks, automating them where possible.
• Integrate response workflows with SIEM, SOAR, ticketing, and chat tooling to cut time-to-contain.

Detection & Continuous Improvement

• Turn incident findings into new or improved detections, logging coverage, and visibility.
• Lead blameless post-incident reviews and drive remediation items to completion.
• Run tabletop exercises and simulations to test readiness and find gaps.

Required Skills & Experience

• Proven experience leading or serving as technical lead on security incidents in a cloud or SaaS environment.
• Strong hands-on investigation skills with SIEM, cloud audit logs, and log-based analysis under time pressure.
• Proficiency writing production-quality scripts or tools in Python, Go, or Bash for investigation and automation.
• Solid knowledge of cloud architecture and security, especially Google Cloud Platform (IAM, audit logging, GKE, networking).
• Working knowledge of Kubernetes and containers, including how to investigate and contain compromised workloads.
• Understanding of identity systems, SaaS architectures, and common cloud attack paths.
• Familiarity with software engineering fundamentals, CI/CD pipelines, and package ecosystems.
• Understanding of IR frameworks and lifecycle (e.g., NIST 800-61), vulnerability lifecycles, and exploitability analysis.

Preferred Qualifications

• Experience building or operating SOAR or other response automation platforms.
• Digital forensics experience with cloud, Linux hosts, or containers.
• Experience with threat intelligence, threat hunting, or security research.
• Experience with bug bounty programs or coordinated vulnerability disclosure.
• Familiarity with detection-as-code practices and writing detection rules.
• Experience in fast-paced, cloud-native, or AI/ML-driven environments.
• Relevant certifications (such as GCIH, GCFA, GCFR) or equivalent hands-on experience.