CareerPlan

Security Researcher - Cybersecurity Lead Investigator

United Kingdom, Multiple Locations, Multiple LocationsFull-time£75k–£123k2026-10-23 → 2026-11-10
Security clearance required

Core

Lead investigator orchestrating evidence-driven cybersecurity investigations, incident response, and technical recovery across on-premises and cloud environments.

Role type

Senior IC Security Researcher / Cybersecurity Lead Investigator

Builds

Incident timelines, technical response plans, and investigative documentation

Domain

Cybersecurity / Threat Intelligence / Incident Response

Required skills

Threat hunting, reverse engineering, incident response, evidence correlation, adversary activity assessment, technical response planning, stakeholder communication, resource management, follow-the-sun coordination, technical mentoring, knowledge sharing

Preferred skills

Nation-state or cybercrime activity analysis, analytical automation, data-quality improvement

Technologies

Enterprise on-premises environments, Cloud environments

Responsibilities

Orchestrate evidence-driven investigations and direct response recommendations; lead hands-on analysis across enterprise environments; contextualize and prioritize findings; assess adversary activity and compromise scope; direct technical response planning; serve as primary technical point of contact for complex investigations; maintain investigative documentation and follow-the-sun handovers; develop technical publications and presentations

Seniority

Senior, hands-on IC with leadership responsibilities