18 of 18 Senior Tester Jobs in London

CHECK Senior Infrastructure Penetration Tester PGI is a global consultancy that helps organisations build digital resilience. We deploy our people to implement solutions on behalf of clients or to support them in developing their capabilities. Our Penetration Testers work with organisations of all sizes and types to detect and remediate vulnerabilities. They help identify areas lacking sufficient protection. More ❯

At VML, we are a beacon of innovation and growth in an ever-evolving world. Our heritage is built upon a century of combined expertise, where creativity meets technology, and diverse perspectives ignite inspiration. With the merger of VMLY&R More ❯

actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the job poster from Opus Recruitment Solutions Senior Consultant - Cyber Security - Opus Recruitment Solutions Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red … teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations. This is a … and NIST Experience with C2 frameworks (e.g., Cobalt Strike, PoshC2, Sliver) Certifications such as OSCP, CRTO, OSEP, or CREST CRT preferred (but not required) Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Industries Technology, Information and Media Referrals increase your chances of interviewing at Opus Recruitment Solutions by 2x Get notified about More ❯

Senior Penetration Tester – (UK only - Must be eligible for Security Clearance) Location: UK (Leeds, Bristol, London or Remote) Salary - £45k - £60k Step up your game in cybersecurity. We’re looking for an experienced Senior Penetration Tester who thrives on pushing boundaries, thinks like an attacker, and delivers like a pro. You’ll be joining a tight More ❯

Senior Tester MUST BE DV CLEARED Overview: Are you a Senior Tester looking for a hands-on, impactful role where you can lead by example and shape the future of testing in a fast-paced, delivery-focused environment? Our client is seeking experienced and self-motivated Test Leads to join a well-established Test Practice , delivering More ❯

Senior Penetration Tester/Ethical Hacker (C++, C#, PowerShell) 1 day ago Be among the first 25 applicants Key Responsibilities : Conduct advanced penetration testing on web applications, networks, and systems to identify vulnerabilities. Simulate sophisticated cyberattacks using tools and custom scripts to exploit weaknesses. Develop and deploy custom tools, scripts, and exploits to test system resilience. Collaborate with … experience with malware analysis and forensic tools is a plus. Certifications (Preferred) : OSCP (Offensive Security Certified Professional) OSCE (Offensive Security Certified Expert) CEH (Certified Ethical Hacker) GPEN (GIAC Penetration Tester) CISSP (Certified Information Systems Security Professional) Soft Skills : Strong problem-solving and analytical skills. Excellent communication skills, with the ability to explain technical findings to non-technical stakeholders. A … Android). Knowledge of blockchain and smart contract security. Familiarity with AI/ML security challenges. Contributions to open-source security projects or bug bounty programs. Seniority level Mid-Senior level Employment type Contract Industries: Software Development #J-18808-Ljbffr More ❯

Senior Penetration Tester -240,000+ Total Package 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 Opportunity This is a hands-on, highly autonomous role embedded within a specialist cyber function. You More ❯

Senior Penetration Tester -240,000+ Total Package 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 Opportunity This is a hands-on, highly autonomous role embedded within a specialist cyber function. You More ❯

Senior Penetration Tester -240,000+ Total Package 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 Opportunity This is a hands-on, highly autonomous role embedded within a specialist cyber function. You More ❯

Senior Penetration Tester – UK remote - £60,000 - £80,000 Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester More ❯

Senior Tester Full Time - Hybrid working with regular attendance at the Brighton Head Office 37.5 hours per week, Monday to Friday, worked flexibly in line with company, customer and project needs GBP45,000 - GBP55,000 per annum Our client is a UK technology company with team members based across the country. They solve through-life acquisition and support … sectors, supporting their teams to work strategically, collaboratively and effectively to maintain and streamline the delivery of military and industrial capability. They are currently looking for a highly experienced Senior Tester to join their team. The Senior Tester will be responsible for ensuring that the software developed by our client is of high quality and fit … and validating critical path scenarios to support product readiness for general release. This is a hands-on role requiring collaboration with Analysts, Developers, Product Owners, and Delivery teams. The Senior Tester will help coordinate the overall test strategy, identify opportunities for automation, and provide artefacts suitable for customer scrutiny. The successful candidate will be expected to operate with More ❯

Senior Cybersecurity Consultant (Penetration Tester) Senior Cybersecurity Consultant (Penetration Tester) Direct message the job poster from Anson McCade Senior Technology Recruitment Consultant A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and … proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National Infrastructure and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce … excellent analytical skills and a curiosity-driven mindset. Enjoys working collaboratively with diverse stakeholders, bringing adaptability and energy to a fast-paced consulting environment. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Information Technology and Consulting Industries IT Services and IT Consulting and Business Consulting and Services Referrals increase your More ❯

Join to apply for the Senior Penetration Tester role at Trustmarque 1 day ago Be among the first 25 applicants Join to apply for the Senior Penetration Tester role at Trustmarque Are you a passionate and highly skilled security expert, eager to lead complex penetration testing engagements and drive strategic client security? Join Trustmarque's dynamic … penetration testing team and become a pivotal force safeguarding our clients' digital ecosystems. In this senior role, you'll leverage your advanced expertise to conduct comprehensive penetration tests, provide strategic client advisory, and actively mentor the next generation of security talent. What you’ll be doing: Sharpen Your Skills, Sharpen Our Security: Stay at the forefront of the industry … at Cyber. Collaborative Spirit: Foster a culture of knowledge sharing within the Security Testing Practice team. You'll also: Be passionate about the security lifecycle. Ability to engage with senior executives of differing technical levels, and to encourage the buy in of our security ethos. Confidence, flexibility and ability to think creatively and offer solutions to complex problems. Ability More ❯

Senior Penetration Tester Are you a passionate and highly skilled security expert, eager to lead complex penetration testing engagements and drive strategic client security? Join Trustmarque's dynamic penetration testing team and become a pivotal forcesafeguarding our clients' digital ecosystems. In this senior role, you'll leverage your advanced expertise to conduct comprehensive penetration tests, provide strategic … at Cyber. Collaborative Spirit: Foster a culture of knowledge sharing within the Security Testing Practice team. You'll also: Be passionate about the security lifecycle. Ability to engage with senior executives of differing technical levels, and to encourage the buy in of our security ethos. Confidence, flexibility and ability to think creatively and offer solutions to complex problems. Ability … to translate specialist, technical information for all audiences. Here's what we're looking for: Proven track record of delivering penetration testing services. Current senior penetration testing qualification, such as Crest Certified Tester or Cyber Scheme Team Leader 3+ years of penetration testing experience Ability to maintain UK security clearances as required by the business. Proficient in at More ❯

Social network you want to login/join with: Job description Role Overview Our client is searching for a highly skilled Senior Penetration Tester to join our growing team. In this role, you’ll play a pivotal role in strengthening our clients’ security posture by identifying and exploiting vulnerabilities across a wide range of applications. This will include More ❯

A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and a proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National Infrastructure … and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce clear and concise technical reports, summarising findings for both technical and business stakeholders Work directly with clients as a trusted advisor – this is a consulting-facing More ❯

A premier UK consultancy is seeking a skilled and passionate Penetration Tester to join its growing team of cybersecurity experts. This is a dynamic opportunity for individuals with strong technical skills and a proactive mindset, eager to make a tangible impact across a wide range of client environments. Working on mission critical projects across National Security, Critical National Infrastructure … and Defence the Senior Penetration Tester will liaise with highly-skilled teams acting as a trusted advisor. Key Responsibilities: Conduct hands-on internal penetration tests in infrastructure/Active Directory environments Produce clear and concise technical reports, summarising findings for both technical and business stakeholders Work directly with clients as a trusted advisor – this is a consulting-facing More ❯

and digital inclusion team, you will conduct accessibility and assistive technology tests, write conformance reports, and support design and developer teams throughout product development. In your role as a senior accessibility tester, you will also mentor and guide junior team members. What will you be doing: Ensure quality assurance on projects and provide constructive feedback to junior team … methods across web and desktop platforms, and modern web development practices. Bachelor's degree in computer science or related field, and relevant certifications (e.g., IAAP Web Accessibility Specialist, Trusted Tester Version 5). Future career path: Geography Accessibility Test Manager Global Accessibility Test Lead More reasons to join us: In addition to joining a fantastic team, you can also More ❯