Salary: £80,000 - 80,000 per year Requirements: UK Bachelors degree in Computer Science, Cybersecurity or related subject (or UK Masters as alternative) 3-5 years commercial penetration testing experience Strong understanding of offensive security techniques, OWASP Top 10, MITRE ATT&CK Deep knowledge of operating systems, networking protocols, and system architecture Experience with penetration testing tools (Burp Suite, Metasploit, custom scripts) Excellent communication and report writing skills OSCP, CREST certifications (desirable) Bug bounty participation (desirable) Red team experience (desirable) Cloud security testing (AWS, Azure, GCP) (desirable) Active involvement in security community (CTFs, conferences, research) (desirable) Responsibilities: Conduct comprehensive penetration testing across web applications, infrastructure, APIs, and cloud environments Perform manual security assessments and exploitation Deliver client-facing penetration testing engagements Write detailed technical reports for various stakeholders Collaborate with internal teams on security improvements Technologies: AWS Azure Cloud GCP OWASP Security Web More: We are a fast-growing cybersecurity company seeking Senior Offensive Security Engineers to strengthen our offensive security capabilities. Our culture values technical excellence and deep fundamentals over credentials, in a graduate-focused environment that encourages continuous learning and a passion for technology. This role is fully remote within the UK, with an optional hybrid working arrangement from our London office. last updated 4 week of 2026