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Senior Penetration Tester - CTM

Belfast💼 Full-time🗓 2026-05-31 → 2026-09-26

Core

Deliver high-quality penetration testing engagements across infrastructure, cloud, web, and mobile applications for diverse clients including fintech, manufacturing, and public sector.

Role type

Senior Penetration Tester (Offensive Security)

Builds

Security assessments and remediation strategies for client infrastructure and applications

Domain

Cybersecurity / Offensive Security

Deliverable

production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work

Required skills

Web application penetration testing, Network penetration testing, Linux/Windows/Active Directory administration, Cloud security reviews, BurpSuite Pro, Nmap, Nessus, Kali Linux, Python/Shell scripting

Preferred skills

CHECK Team Lead (CTL) status, OSCP certification, Cyber Scheme certification, Hack the Box experience, Capture the Flag experience

Technologies

BurpSuite Pro, Nmap, Nessus, Kali Linux, Python, Shell

Responsibilities

Identify and remediate security weaknesses in infrastructure, cloud, web, and mobile applications; contribute to the development of testing methodologies; mentor junior testers

Seniority

Senior, hands-on IC

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