CareerPlanSign in

Senior Penetration Tester

Belfast, Northern Ireland💼 Full-time🗓 2026-05-03 → 2026-08-07

Core

Delivering high-quality penetration testing across web applications, networks, cloud environments, and APIs to identify and remediate real-world security risks for diverse clients.

Role type

Senior hands-on penetration tester

Builds

Security assessments and actionable reports for clients

Domain

Cybersecurity / Offensive Security

Deliverable

client delivery

Required skills

Web application testing, network/infrastructure testing, cloud environment testing (AWS, Azure, GCP), vulnerability identification, exploit validation, risk articulation, Linux/Windows/Active Directory administration, scripting (Python, Bash), tool usage (Burp Suite, Nmap, Nessus)

Preferred skills

OSCP/OSWE/CRTO certifications, UK Security Clearance, mobile application testing, capture-the-flag platforms experience, consultancy experience

Technologies

Burp Suite, Nmap, Nessus, Kali Linux, Python, Bash, AWS, Azure, GCP

Responsibilities

Deliver penetration testing engagements for web apps, networks, cloud, and APIs; identify vulnerabilities and validate exploitability; produce concise, actionable reports; support clients with remediation; contribute to testing methodologies and internal tooling; collaborate with team members and support junior testers

Seniority

Senior, hands-on IC

Sourced via adzuna · Listed on CareerPlan, which tracks 70,000+ jobs from 20+ sources.