126 to 150 of 232 Penetration Tester Jobs

Are you looking for an exciting new opportunity? Join a trusted security and compliance partner offering comprehensive services including GRC consulting, CREST-accredited penetration testing, and an industry-leading vulnerability management service. As the number one Global Service Partner of Vanta, the company has a proven track record of helping hundreds of businesses from tech startups to global industry … posture and compliance needs. If you would like to learn more about this opportunity, feel free to reach out and apply today! Responsibilities: Work across the full spectrum of penetration testing and red teaming Contribute to client relationships and leading high-level engagements Scoping and delivering advanced red team assessments Mentoring more junior team members Supporting innovation through offensive … security research Required Skills/Qualifications: Minimum 7 years of penetration testing experience, with at least 4 years in red teaming Strong hands-on background across a range of testing disciplines, including networks, infrastructure, applications, and cloud Comfortable in client-facing roles with strong communication skills Deep understanding of adversary simulation, lateral movement, and offensive tooling Capable of producing More ❯

employees are remote workers, but that doesn't stop us keeping in touch and maintaining a strong positive culture amongst our whole team. About the role The role of Penetration Tester is responsible for identifying vulnerabilities in Youth4Youth’s systems, applications, and infrastructure. This involves simulating cyberattacks, conducting security assessments, documenting findings, and recommending mitigations. The role requires … communication with other Youth4Youth team members, developing test strategies for penetration testing, executing tests, analysing results, and creating detailed reports on security weaknesses and solutions. Responsibilities Perform security-focused testing of Youth4Youth’s applications, including vulnerability assessments and penetration testing. Experience with web and chat-based applications. Collaborate with developers to validate fixes and retest vulnerabilities. Regularly liaise … exploited and remediation steps. Skills Excellent problem-solving and communication skills to engage with team members. Understanding of OWASP Top 10 vulnerabilities and secure web application development. Experience with penetration testing tools such as Burp Suite, OWASP ZAP and Nikto. Experience with vulnerability reporting, including risk assessment and remediation guidance. Awareness of data protection principles, GDPR and ethical hacking More ❯

Hou je ervan om kwetsbaarheden te ontdekken? Wil je hierover graag adviseren? Voer geavanceerde securitytesten uit voor onze opdrachtgevers met behulp van nieuwste tool en technieken. Als Security Tester (Pentester) ben jij degene die samen met het team ervoor zorgt dat de digitale systemen van onze opdrachtgevers, zowel IT- als OT-omgevingen, optimaal beveiligd zijn. Samen bespreken we de 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. 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. 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. The environment is agile, collaborative, and engineered for depth not red tape. Leading advanced penetration tests across infrastructure, applications, and DevOps pipelines Assessing the effectiveness of existing security controls through hands-on testing Working closely with Detection, Risk and Compliance teams to provide assurance and technical insight Coaching and supporting junior colleagues through knowledge sharing More ❯

will have the ability to take initiative, learn quickly on the job and deal with issues as they arise in a high-pressure environment. You will be an enthusiastic tester with a few years of experience under your belt. You’ll be passionate about, and proud of, working in the security industry, and be constantly researching the latest vulnerabilities … with both government and private sector clients. You will be part of a talented and collaborative international team who are positioning Resillion as an industry leader in delivery of penetration testing services. You will contribute to our thought leadership on various social media platforms and industry events. You will be expected to assist in enforcing the highest standards of More ❯

Job Title: Penetration Tester Job Type: Permanent Salary: Up to £70,000 Location: Belfast/Remote (2 days per week on-site) Penetration Tester - Role & Responsibilities Performing penetration tests across cloud, infrastructure & applications Requirements analysis Manual and automated testing Producing clear & concise reports tailored to client needs. Staying ahead of evolving threats, techniques and industry … standards. Penetration Tester - Required Experience 2+ years' experience in Penetration Testing Knowledge of networking, operating systems (Linux, Windows) and web technologies Familiarity with OWASP Top 10 Excellent communication skills - verbal and written Eligibility for SC Clearance Interviews: June 2025 Start Date: July 2025 How to Apply: Apply to Gary Hargreaves at X4 Technology to learn more about More ❯

Principal Penetration Tester – UK remote - £70,000 - £90,000 Our client, a leading cyber security consultancy, is looking for a Principal Penetration Tester to lead and execute complex security assessments and play a key strategic role, driving high-impact penetration testing, red teaming, and security advisory services for clients across various industries. Main Responsibilities: Lead … advanced penetration testing engagements across networks, applications, cloud, and mobile environments. Oversee red teaming exercises, delivering real-world adversary simulation insights. Provide expert security guidance, working with stakeholders to enhance security posture. Mentor and develop junior testers, fostering a high-performance security team. Stay ahead of emerging threats, exploits, and attack methodologies to improve testing capabilities. To be considered … Extensive experience in penetration testing, red teaming, and security consulting. Strong knowledge of attack techniques, threat modelling, and exploit development. Certifications such as CREST CRT/CCS, OSCP, OSEP, or CISSP are highly desirable. Proven ability to lead and deliver high-impact security engagements. More ❯

Penetration Tester – UK remote - £30,000 - £40,000 + Benefits + Bonus Our client is looking for a Penetration Tester to join their established Offensive Security function. This role involves conducting and delivering high-quality security assessments across web applications, infrastructure, mobile, cloud, and networks. Our client is looking for someone who has a wide understanding … of different types of security testing, and in-depth threat-intelligence knowledge. Main Responsibilities: Perform penetration tests on web applications, networks, APIs, cloud environments, and mobile platforms. Assist in red team exercises, social engineering assessments, and security awareness initiatives. Conduct vulnerability assessments, exploit security flaws, and document findings with actionable remediation steps. Simulate real-world attack scenarios to evaluate … custom scripts, tools, and exploits to test system defences. Work closely with security teams to remediate identified vulnerabilities. To be considered, you should have: 1+ years in a professional Penetration Testing role. Strong interest of OWASP Top 10, MITRE ATT&CK Framework, and common exploit techniques. Desire and interest to build a career in the Offensive Security space More ❯

Social network you want to login/join with: Principal Penetration Tester, peterborough col-narrow-left Client: Opus Recruitment Solutions Location: peterborough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 6 Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job Description: Our client, a leading cyber security consultancy, is looking for a … Principal Penetration Tester to lead and execute complex security assessments and play a key strategic role, driving high-impact penetration testing, red teaming, and security advisory services for clients across various industries. Main Responsibilities: Lead advanced penetration testing engagements across networks, applications, cloud, and mobile environments. Oversee red teaming exercises, delivering real-world adversary simulation insights. … and develop junior testers, fostering a high-performance security team. Stay ahead of emerging threats, exploits, and attack methodologies to improve testing capabilities. To be considered: Extensive experience in penetration testing, red teaming, and security consulting. Strong knowledge of attack techniques, threat modelling, and exploit development. Certifications such as CREST CRT/CCS, OSCP, OSEP, or CISSP are highly More ❯

Social network you want to login/join with: Penetration Tester (Junior), High Wycombe Client: Addition+ Location: High Wycombe, United Kingdom Job Category: Other - EU work permit required: Yes Job Views: 12 Posted: 04.06.2025 Expiry Date: 19.07.2025 Job Description: We are currently recruiting for a dynamic UK technology provider for the role of Penetration Tester . … due to the nature of clients. Full UK Driving License & Access to a vehicle are essential. Experience working in the public sector. Minimum of 2+ years of experience in Penetration Testing. Any of the following Penetration Testing Certifications: CompTIA, OSWE, CRTO, CPT, LPT, CEPT, CCPT, CPENT, CRPT, etc. Strong background and understanding of cybersecurity, with a knowledge of … penetration testing frameworks and methodologies. Strong client-facing skills, with the ability to present and discuss findings remotely or in person. Offensive Security Certified Professional (OSCP) certification is highly preferred. How you'll be rewarded Mentorship from Senior Leaders across the business #J-18808-Ljbffr More ❯

Social network you want to login/join with: If you're looking to join an established organisation expanding their penetration testing capabilities. As part of this strategic investment I'm now on the lookout for a number of experienced penetration testers to join the team. This is a genuine opportunity for a penetration tester to … of testing disciplines with full investment for training & certifications (including those you personally want to go for) this could be for you. What you'll be doing As a penetration tester you will deliver high-quality tests across a range of environments: Internal/External Infrastructure WebApp, API's Hardware & Embedded Software Produce clear, concise and actionable reports … for both technical and none technical audiences. Ability to work on your own or collaboratively alongside a skilled team of penetration testers. Engage with clients and internal stakeholders to explain finding and remediation steps wherever appropriate. What's in it for you? Remote first culture - work from anywhere in the UK Salary up to £60,000, depending on experience. More ❯

Social network you want to login/join with: Penetration Tester, crawley, west sussex col-narrow-left Client: Network IT Recruitment Limited Location: crawley, west sussex, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 6 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description: If you're looking to join an … established organisation expanding their penetration testing capabilities. As part of this strategic investment I'm now on the lookout for a number of experienced penetration testers to join the team. This is a genuine opportunity for a penetration tester to deliver impactful testing work - without getting side lined with adjacent tasks or red tape! If you … of testing disciplines with full investment for training & certifications (including those you personally want to go for) this could be for you. What you'll be doing As a penetration tester you will deliver high-quality tests across a range of environments: Internal/External Infrastructure WebApp, API's Hardware & Embedded Software Produce clear, concise and actionable reports More ❯

required: Yes col-narrow-right Job Views: 6 Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job Description: Our client, a leading cyber security consultancy, is looking for a Principal Penetration Tester to lead and execute complex security assessments and play a key strategic role, driving high-impact penetration testing, red teaming, and security advisory services for clients … across various industries. Main Responsibilities: Lead advanced penetration testing engagements across networks, applications, cloud, and mobile environments. Oversee red teaming exercises, delivering real-world adversary simulation insights. Provide expert security guidance, working with stakeholders to enhance security posture. Mentor and develop junior testers, fostering a high-performance security team. Stay ahead of emerging threats, exploits, and attack methodologies to … improve testing capabilities. To be considered: Extensive experience in penetration testing, red teaming, and security consulting. Strong knowledge of attack techniques, threat modelling, and exploit development. Certifications such as CREST CRT/CCS, OSCP, OSEP, or CISSP are highly desirable. Proven ability to lead and deliver high-impact security engagements. #J-18808-Ljbffr More ❯

If you're looking to join an established organisation expanding their penetration testing capabilities. As part of this strategic investment I'm now on the lookout for a number of experienced penetration testers to join the team. This is a genuine opportunity for a penetration tester to deliver impactful testing work - without getting side lined with … of testing disciplines with full investment for training & certifications (including those you personally want to go for) this could be for you. What you'll be doing As a penetration tester you will deliver high-quality tests across a range of environments: Internal/External Infrastructure WebApp, API's Hardware & Embedded Software Produce clear, concise and actionable reports … for both technical and none technical audiences. Ability to work on your own or collaboratively alongside a skilled team of penetration testers. Engage with clients and internal stakeholders to explain finding and remediation steps wherever appropriate. What's in it for you? Remote first culture - work from anywhere in the UK Salary up to £60,000, depending on experience. More ❯

Role: Penetration Tester Location: London Salary: £45k - £60k Work Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Skillset: OWASP, Cloud Platforms, SSL/TLS Summary An elite security consultancy has a brand new role for an experienced Penetration Tester to join their team. The role is being offered … Cloud Platforms OSI Model Benefits Annual Training and Development Plans Regular Performance Reviews Industry Events and Conferences Hybrid Working After Probation Period Apply Now! If you are an experienced Penetration Tester and you are looking to progress with an organisation alongside ambitious and driven professionals, then look no further - this is the role for you! Referrals: If this … Email: to recommend someone for this role. Interviews for this role will be held imminently. To be considered, please send your CV to me now to avoid disappointment. Role: Penetration Tester Location: London Salary: £45k - £60k Work Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Skillset: OWASP, Cloud Platforms, SSL More ❯

Direct message the job poster from iFindTech Ltd Work Across Internal Security, Compliance & Client Engagements A fast-growing security-focused business is looking for a Penetration Tester to join their expanding team. This is a hands-on, cross-functional role where you'll support internal security maturity, contribute to client-facing consultancy projects, and work directly with security … purple team exercises alongside the SOC to simulate attack scenarios and improve detection Run internal vulnerability assessments and pen tests to support compliance and readiness for audits Deliver external penetration testing services — from scoping and testing to risk analysis and reporting What We're Looking For: Practical experience in penetration testing across networks, applications, and cloud environments Solid … type Full-time Job function Job function Information Technology Industries Computer and Network Security Referrals increase your chances of interviewing at iFindTech Ltd by 2x Get notified about new Penetration Tester jobs in London Area, United Kingdom . Product Security Engineer (University Grad) London, England, United Kingdom 1 week ago Woking, England, United Kingdom 1 week ago London More ❯

Social network you want to login/join with: Penetration Tester (Junior), west london col-narrow-left Client: Addition+ Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 9 Posted: 04.06.2025 Expiry Date: 19.07.2025 col-wide Job Description: We are currently recruiting for a dynamic UK technology provider for … the role of Penetration Tester. This is a fantastic opportunity to join a business known for its cutting-edge connectivity, cloud, and communications solutions. Role Overview *CANDIDATES MUST BE BASED IN THE UK* Location: Remote with ad hoc travel to customer sites. What you'll be doing: Conduct a variety of IT security engagements and ensure client deliverables meet … due to the nature of clients. Full UK Driving License & Access to a vehicle are essential. Experience working in the public sector. Minimum of 2+ years of experience in Penetration Testing. Any of the following Penetration Testing Certifications: CompTIA, OSWE, CRTO, CPT, LPT, CEPT, CCPT, CPENT, CRPT, ect. Strong background and understanding of cybersecurity, with a knowledge of More ❯

Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Summary An elite security consultancy has a brand new role for an experienced Penetration Tester to join their team. The role is being offered on a permanent basis from their central London office, close to major transport links. You will be tasked … Previous Testing Experience OWASP Web Applications Testing Methodology OSI Model Annual Training and Development Plans Regular Performance Reviews Industry Events and Conferences Apply Now! If you are an experienced Penetration Tester and you are looking to progress with an organisation alongside ambitious and driven professionals, then look no further - this is the role for you! Referrals: Interviews for More ❯

Penetration Tester Job Category: Security Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: The Opportunity: We are seeking an experienced and knowledgeable Penetration Tester to serve as a Subject Matter Expert (SME) for our cybersecurity team. In this role … you will provide specialized expertise in testing security controls and contribute to the Risk Management Framework (RMF) process. The ideal candidate will have a strong background in penetration testing, network protocols, operating systems, architectures, equipment, and security standards. You will be responsible for leading and participating in security control assessments to identify vulnerabilities and recommend improvements to enhance the … security posture of our systems and networks. Key Responsibilities: Perform vulnerability and penetration testing using a wide variety of tools Research and evaluate emerging technologies relevant to information systems security; interpret agency specific and federal security regulations Perform both network and application-level testing using established testing protocols and methods Qualifications: Required: Current Active TS/SCI with Poly More ❯

Pattern: On-Site For 3 Months and Then 3 Days On-Site/2 Days WFH Summary An elite security consultancy has a brand new role for an experienced Penetration Tester to join their team. The role is being offered on a permanent basis from their central London office, close to major transport links. You will be tasked … Web Applications Testing Methodology SSL/TLS , HTTP OSI Model Annual Training and Development Plans Regular Performance Reviews Industry Events and Conferences Apply Now! If you are an experienced Penetration Tester and you are looking to progress with an organisation alongside ambitious and driven professionals, then look no further – this is the role for you! Referrals: If this More ❯

We’re a tight-knit team of UK-based cyber security professionals delivering high-quality, consultative penetration testing to companies of all sizes, from scaling startups to established names. We focus on real risk, clear communication, and delivering value that actually helps clients stay secure. Right now, we’re growing, and we’re looking for someone technical, capable, and … collaborative to join us. You won’t be just another tester churning through engagements. We’re not about conveyor belt consulting. We’re building a delivery team with autonomy, purpose, and pride in the craft, and this is your chance to help shape that from the ground up. What You’ll Be Doing Delivering penetration testing engagements, mostly More ❯

Title Secure Software Assessor/Penetration Tester - Intermediate Full-Time/Part-Time Full-Time Description RiVidium Inc (dba, TripleCyber) is seeking a Secure Software Assessor/Penetration Tester who analyzes the security of new or existing computer applications, software, or specialized utility programs and provides actionable results. TASKS: Apply coding and testing standards, apply security … capabilities and requirements. Translate security requirements into application design elements including documenting the elements of the software attack surfaces, conducting threat modeling, and defining any specific security criteria. Perform penetration testing as required for new or updated applications. Consult with customers about software system design and maintenance.ABILITIES: Ability to use and understand complex mathematical concepts (e.g., discrete math). … Security, Information Technology, Software Engineering, Information Systems, or Computer Engineering degree; or a degree in a Mathematics or Engineering field. Certification(s): IAT or IAM Level 2 and Two Penetration Testing Certification (e.g. GPEN, GWAT, GCIH, CEH, GPYC, LPT,CPT) About the Organization Established in 2008, RiVidium, Inc. (dba TripleCyber) is a VA-Verified SDVOSB and an SBA-Certified More ❯

Gray Tier Technologies is seeking a Penetration Tester with Cloud experience to support our customer in Ashburn VA. The Department of Homeland Security (DHS), Customs and Border Protection (CBP) Security Operations Center (SOC) is a US Government program responsible to prevent, identify, contain and eradicate cyber threats to CBP networks through monitoring, intrusion detection and protective security services More ❯

col-narrow-right Job Views: 15 Posted: 04.06.2025 Expiry Date: 19.07.2025 col-wide Job Description: We are currently recruiting for a dynamic UK technology provider for the role of Penetration Tester. This is a fantastic opportunity to join a business known for its cutting-edge connectivity, cloud, and communications solutions. Role Overview *CANDIDATES MUST BE BASED IN THE UK … due to the nature of clients. Full UK Driving License & Access to a vehicle are essential. Experience working in the public sector. Minimum of 2+ years of experience in Penetration Testing. Any of the following Penetration Testing Certifications: CompTIA, OSWE, CRTO, CPT, LPT, CEPT, CCPT, CPENT, CRPT, ect. Strong background and understanding of cybersecurity, with a knowledge of … penetration testing frameworks and methodologies. Strong client-facing skills, with the ability to present and discuss findings remotely or in person. Offensive Security Certified Professional (OSCP) certification is highly preferred. How you'll be rewarded Mentorship from Senior Leaders across the business #J-18808-Ljbffr More ❯

Penetration Tester - Infrastructure/OT (Consultancy | Mostly Remote | Not for Beginners) Right. Let’s skip the fluff. One of our consultancy clients needs an experienced Infrastructure Pen Tester. Not someone who wants to be a Pen Tester. Not someone halfway through their OSCP. Someone who's been there, and got some of the battle scars already. They work More ❯