Penetration Tester – UK Remote – £45,000–£60,000
We're working with a leading Cyber Security consultancy seeking a technically strong and experienced Penetration Tester to join their established offensive security team.
This is a fantastic opportunity for someone with a solid foundation in Computer Science and proven hands-on experience in ethical hacking to step into a role where you'll lead projects, mentor juniors, and have a tangible impact across real-world attack simulations, red teaming, and security testing.
You’ll be working alongside other highly skilled red teamers, delivering client-facing engagements across web applications, cloud platforms, infrastructure, and bespoke systems—while also contributing to research, tooling, and internal capability development.
Responsibilities
* Lead and execute end-to-end penetration tests across cloud, web, API, and infrastructure environments
* Identify, exploit, and document complex vulnerabilities in both black-box and white-box scenarios
* Develop and refine internal tooling and automation for reconnaissance, enumeration, and post-exploitation
* Support and contribute to red team exercises, providing technical expertise and tactical input
* Collaborate with clients to interpret findings and develop tailored remediation strategies
* Participate in research and internal knowledge-sharing; contribute to methodology improvements
* Mentor junior team members and review their work during engagements
Requirements
* Strong academic or professional background in Computer Science or a related technical discipline
* Hands-on penetration testing experience—ideally 2+ years in client-facing consultancy or in-house red teaming
* Proficiency with offensive tools and frameworks: Burp Suite, Nmap, Metasploit, BloodHound, Sliver, etc.
* Strong understanding of vulnerability classes, exploit development, and the OWASP Top 10
* Comfortable scripting in Python, Bash, or PowerShell to automate testing workflows
* Familiarity with cloud security concepts and infrastructure (AWS, Azure, or GCP)
* CTF experience, GitHub projects, or relevant certifications (e.g., OSCP, CRTO, CSTM) are a big plus