Offensive Penetration Tester
| Posting date: | 23 December 2025 |
|---|---|
| Salary: | £34,200 to £45,300 per year |
| Hours: | Full time |
| Closing date: | 22 January 2026 |
| Location: | Croydon, London |
| Remote working: | On-site only |
| Company: | Vasave Business Solutions |
| Job type: | Contract |
| Job reference: |
Summary
An Offensive Penetration Tester is responsible for proactively identifying security weaknesses in systems, networks, applications, and infrastructure by simulating real-world cyberattacks. The role involves conducting authorized penetration tests, red team exercises, and vulnerability assessments to evaluate an organization’s security posture. Offensive Penetration Testers use advanced tools and manual techniques to exploit vulnerabilities, bypass security controls, and assess potential business impact. They analyze findings, document technical and executive-level reports, and provide clear remediation recommendations to strengthen defenses. The role requires strong knowledge of networking, operating systems, web applications, cloud platforms, and common attack frameworks such as OWASP and MITRE ATT&CK. Ethical responsibility, attention to detail, and problem-solving skills are critical, as all testing is performed within defined legal and ethical boundaries. Offensive Penetration Testers collaborate closely with security, development, and operations teams to improve resilience against evolving cyber threats and to enhance overall organizational security maturity.