Entasis Partners are proud to be exclusively supporting a global organisation at the forefront of innovation in financial systems and high-performance computing.This is not your average security role. Our partner operates in a deeply technical, high-trust environment where the scale of data, the pace of experimentation, and the calibre of internal talent make for an exceptionally challenging and rewarding opportunity.With a newly developed central London site focused on next-generation research, this firm is seeking a Senior Penetration Tester to strengthen its already world-class internal security capability.The OpportunityThis is a hands-on, highly autonomous role embedded within a specialist cyber function. You’ll be trusted to scope, execute, and deliver sophisticated penetration tests and control assessments across a range of technologies including Kubernetes, Jenkins, and Windows-based infrastructure.More than just finding issues, you’ll work in partnership with teams across the business to advise, remediate, and embed meaningful improvements. The environment is agile, collaborative, and engineered for depth not red tape.What You’ll Be DoingLeading advanced penetration tests across infrastructure, applications, and DevOps pipelinesProviding clear, actionable advice to technical and business stakeholdersAssessing the effectiveness of existing security controls through hands-on testingWorking closely with Detection, Risk and Compliance teams to provide assurance and technical insightEnhancing internal tools and frameworks to drive automation and assessment efficiencyCoaching and supporting junior colleagues through knowledge sharing and collaborationWhat We’re Looking ForYou’ll bring deep technical experience, natural curiosity, and the confidence to challenge assumptions. You may have worked in financial services, or equally in fast-paced engineering environments but what matters is your capability and judgement.Must-haves include:Strong penetration testing experience from planning to execution and reportingUnderstanding of vulnerability management and secure systems designFamiliarity with DevSecOps tooling and scripting (e.g., Python, Jenkins, Ansible)Strong grasp of how to assess and break technical controls — and explain fixesOSCP certification (required); CRT, OSEP or similar a strong bonusClear, professional communication skills with both technical and non-technical teamsWhy Apply?Exceptional total compensation ~£240,000+ package (base + discretionary bonus)30 days’ annual leave + flexible working environmentDaily lunch allowance and on-site barista coffeePrivate healthcare and life assuranceMonthly socials, company events, and modern informal cultureCycle-to-work scheme and premium office facilitiesThis is an opportunity to test your skills at the very highest level with the tools, talent, and environment to match.To learn more or arrange a confidential conversation, please contact Entasis Partners directly.Seniority levelSeniority levelMid-Senior levelEmployment typeEmployment typeFull-timeJob functionJob functionInformation TechnologyIndustriesTechnology, Information and Media and Computer and Network SecurityReferrals increase your chances of interviewing at Entasis Partners by 2xSign in to set job alerts for “Penetration Tester” roles.Graduate Cybersecurity Analyst (Visa Sponsorship Available)City Of London, England, United Kingdom £45,000.00-£60,000.00 2 weeks agoLondon, England, United Kingdom 2 days agoSecurity Analyst, Security Operations and Incident ResponseLondon, England, United Kingdom 1 week agoLondon, England, United Kingdom 2 weeks agoLondon, England, United Kingdom 1 week agoLondon, England, United Kingdom 2 weeks agoCyber Security Analyst, Incident ResponseLondon, England, United Kingdom 2 weeks agoCity Of London, England, United Kingdom £60,000.00-£70,000.00 1 day agoLondon, England, United Kingdom 4 days agoLondon, England, United Kingdom 1 month agoLondon, England, United Kingdom 2 days agoApplication Security Engineer, Amazon Application SecurityLondon, England, United Kingdom 3 weeks agoApplication Security Engineer, Amazon Application SecurityLondon, England, United Kingdom 1 week agoCyberSecurity Operations Engineer - Graduate Cons.London, England, United Kingdom 3 weeks agoApplication Security Engineer, Amazon Application SecurityLondon, England, United Kingdom 6 hours agoWe’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.
#J-18808-Ljbffr