Overview
Penetration Tester – UK Remote Linux / Windows Python, PowerShell, Bash
Are you passionate about ethical hacking and ready to take your skills to the next level? We're hiring a Penetration Tester to join a growing cyber team delivering CREST-aligned security services. You’ll simulate real-world attacks, uncover vulnerabilities, and help clients strengthen their defenses — all while working with cutting-edge tools and frameworks.
Responsibilities
- Perform web, infrastructure, wireless & cloud penetration tests (OWASP, PTES).
- Scope engagements and define testing objectives with clients.
- Identify, exploit, and report vulnerabilities with clarity and precision.
- Provide actionable remediation advice.
- Stay ahead of emerging threats and tools.
Qualifications
- Experience in penetration testing across multiple domains.
- Working at a cyber team consulting team delivering CREST-aligned security services
- Strong knowledge of OWASP Top 10, PTES, MITRE ATT&CK.
- Proficiency in Linux/Windows and scripting (Python, PowerShell, Bash).
- Excellent communication and reporting skills.
Certifications
- CREST CPSA or CRT, OSCP (essential)
- OSEP, OSWE, GWAPT, GPEN, CHECK (desirable)
Why Join?
- Diverse, challenging projects
- Career development aligned with SFIA Level 5
- Supportive, collaborative team culture
Application details
All our roles are UK based. When submitting your application to Colossus, please ensure the following:
- Your CV has your address and postcode.
- You also have your correct phone number and email address so we can contact you asap regarding your application.
- For confidentiality purposes, please remove any reference contact phone number's and email address details from your CV.
Seniority level
Employment type
Job function
Industries
- Sound Recording and Data Security Software Products
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