CareerPlan

Senior Application Security Analyst

LondonFull-time2026-07-23 → 2026-11-10
Based in United KingdomNo visa sponsorship

Core

Senior technical role leading advanced application security testing, complex vulnerability analysis, and threat modelling for critical applications and services.

Role type

Senior IC Application Security Specialist (Offensive Security & Threat Modelling)

Builds

Security test strategies, automation frameworks, custom tooling, and remediation standards for web, mobile, API, and AI/LLM surfaces.

Domain

Cybersecurity, Application Security, Cloud Security (Kubernetes), AI/LLM Security

Required skills

Advanced application security testing, Threat modelling (STRIDE, PASTA), Penetration testing (Web/Mobile/API), Container/Kubernetes security, AI/LLM security assessment, Offensive security (Business logic abuse, Auth bypass), Automation scripting (Python, Bash), CI/CD security integration

Preferred skills

OSCP, OSWE certifications, Advanced mobile reverse engineering (Frida, Objection), APT/Threat actor tactics knowledge

Technologies

Burp Suite Pro, Postman, SonarQube, TestRail, Jira, Kubernetes, Android/iOS, Python, Bash, MITRE ATT&CK

Responsibilities

Lead advanced security testing and penetration tests; Own threat modelling for new features; Design security test strategies; Act as SME and escalation point for engineering; Oversee scanning tools and CI/CD security; Mentor analysts and specialists; Build automation frameworks and custom tooling; Own security release process and remediation verification; Track and report security metrics.

Seniority

Senior, hands-on IC with mentorship responsibilities