1 to 25 of 52 Offensive Security Jobs in the UK

Offensive Security Tester (Red Team) London/WFH to £70k Opportunity to progress your career as an Offensive Security Tester at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; you'll be working on Greenfield projects, collaborating with and learning from a hugely talented team. Your … role: As an Offensive Security Tester you will manage client engagements, perform security tests and report findings; you'll be using industry standard combined with in-house developed tools as well as carrying out manual reviews to discover any issues with customer infrastructure and web applications. You'll be pro-active and will have the opportunity within … a Russel Group or top tier world university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You're OSCP or CRT certified You have commercial experience with Offensive Security, Red Team testing or Penetration testing You have a keen interest in Cyber Security and understanding of key concepts and protocols You can code with any More ❯

Offensive Security Tester (Red Team) London/WFH to £70k Opportunity to progress your career as an Offensive Security Tester at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; you'll be working on Greenfield projects, collaborating with and learning from a hugely talented team. Your … role: As an Offensive Security Tester you will manage client engagements, perform security tests and report findings; you'll be using industry standard combined with in-house developed tools as well as carrying out manual reviews to discover any issues with customer infrastructure and web applications. You'll be pro-active and will have the opportunity within … a Russel Group or top tier world university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You're OSCP or CRT certified You have commercial experience with Offensive Security, Red Team testing or Penetration testing You have a keen interest in Cyber Security and understanding of key concepts and protocols You can code with any More ❯

Senior/Principal Offensive Security Consultant £100k Location: Hybrid (2 days per month in London) Salary: £80,000 - £100,000 + benefits Are you a Senior Offensive Security Consultant or Principal Penetration Tester ready to take the next step into Red Teaming and Adversarial Simulation ? This is your opportunity to join an agile, rapidly growing UK … cyber security consultancy where you can own and shape an entire offensive service line , build advanced infrastructure, and contribute to research and tooling that truly make an impact. About the Role As a Senior/Principal Offensive Consultant , you'll lead complex technical engagements that go beyond standard penetration testing - focusing on advanced exploitative infrastructure testing , Active … initiatives - including whitepapers, presentations, and thought leadership. Mentor junior consultants, helping grow the internal capability and knowledge base. About You You'll be an experienced Penetration Testing Consultant/Offensive Security Professional who combines strong technical capability with commercial awareness and client empathy. You'll thrive on pushing boundaries, building new services, and seeing your work directly shape More ❯

Senior/Principal Offensive Security Consultant £100k Location: Hybrid (2 days per month in London) Salary: £80,000 - £100,000 + benefits Are you a Senior Offensive Security Consultant or Principal Penetration Tester ready to take the next step into Red Teaming and Adversarial Simulation This is your opportunity to join an agile, rapidly growing UK … cyber security consultancy where you can own and shape an entire offensive service line , build advanced infrastructure, and contribute to research and tooling that truly make an impact. About the Role As a Senior/Principal Offensive Consultant , you'll lead complex technical engagements that go beyond standard penetration testing - focusing on advanced exploitative infrastructure testing , Active … initiatives - including whitepapers, presentations, and thought leadership. Mentor junior consultants, helping grow the internal capability and knowledge base. About You You'll be an experienced Penetration Testing Consultant/Offensive Security Professional who combines strong technical capability with commercial awareness and client empathy. You'll thrive on pushing boundaries, building new services, and seeing your work directly shape More ❯

Offensive Security Researcher/Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator , backed by funding, recognised by Gartner, and trusted by some of the worlds biggest enterprises and critical infrastructure providers. Theyre … building technology that helps security teams outrun real-world threats and theyre looking for offensive security experts who thrive on finding vulnerabilities where others cant. What youll be doing: Spending your days doing what you love: hacking (professionally speaking) discovering innovative, high-impact vulnerabilities across global enterprises Hunting for weaknesses that matter: RCE > weak SSL ciphers Collaborating … with other seasoned offensive experts to invent new TTPs and attack modern infrastructure Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted (Optional but encouraged) Presenting your research at industry conferences with full company support to make it happen More ❯

Offensive Security Researcher/Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator , backed by funding, recognised by Gartner, and trusted by some of the world’s biggest enterprises and critical infrastructure providers. … They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: Spending your days doing what you love: hacking (professionally speaking) — discovering innovative, high-impact vulnerabilities across global enterprises Hunting for weaknesses that matter … RCE > weak SSL ciphers Collaborating with other seasoned offensive experts to invent new TTPs and attack modern infrastructure Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted (Optional but encouraged) Presenting your research at industry conferences — with full company More ❯

Offensive Security Researcher/Security Consultant | Elite Cybersecurity Scale-Up | Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator , backed by funding, recognised by Gartner, and trusted by some of the world’s biggest enterprises and critical infrastructure providers. … They’re building technology that helps security teams outrun real-world threats — and they’re looking for offensive security experts who thrive on finding vulnerabilities where others can’t. What you’ll be doing: Spending your days doing what you love: hacking (professionally speaking) — discovering innovative, high-impact vulnerabilities across global enterprises Hunting for weaknesses that matter … RCE > weak SSL ciphers Collaborating with other seasoned offensive experts to invent new TTPs and attack modern infrastructure Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted (Optional but encouraged) Presenting your research at industry conferences — with full company More ❯

Offensive Security Researcher/Security Consultant Elite Cybersecurity Scale-Up Fully Remote (Global) Ready to take your offensive security skills to the next level? This is your chance to join a fast-scaling cybersecurity innovator, backed by $29M funding, recognised by Gartner, and trusted by some of the world's biggest enterprises and critical infrastructure … providers. They're building technology that helps security teams outrun real-world threats - and they're looking for offensive security experts who thrive on finding vulnerabilities where others can't. What you'll be doing: Spending your days doing what you love: hacking (professionally speaking) - discovering innovative, high-impact vulnerabilities across global enterprises Hunting for weaknesses that … matter: RCE > weak SSL ciphers Collaborating with other seasoned offensive experts to invent new TTPs and attack modern infrastructure Researching cutting-edge attack vectors across cloud, SaaS, web stacks, and internet-exposed infrastructure Partnering with Red Team Engineers to scale and automate your discoveries so nothing gets wasted (Optional but encouraged) Presenting your research at industry conferences - with full More ❯

plays a pivotal role in managing and optimising the organisations critical enterprise technical services that underpin and enable UKRI's business capabilities. Within the group a team of Information Security Professionals support the delivery of modern, secure, resilient and scalable services across a larger federated team of Digital, Data and Technology professionals to deliver impact across the organisation and … the wider UK research and innovation system. Join us for this rare opportunity to apply your experience in offensive security and threat intelligence in a dynamic, fast-paced security operational and strategic role in an organisation at the heart of research and innovation in the UK. Leading the Red Team of penetration testers your broad remit is … to identify real-world risks to diverse technical landscapes, uncovering security vulnerabilities, actively exploiting findings, assessing additional impacts through post-exploitation, and providing proactive advice to teams on the most effective remediation strategies. The role encompasses the full scope and delivery of penetration testing, including Black Box network assessments, insider threat evaluations, credentialed application exploitation, and rigorous testing of More ❯

CIO Group plays a pivotal role in managing and optimising the organisationscritical enterprise technical services that underpin and enable UKRIs business capabilities. Within the group a team of Information Security Professionals support the delivery of modern, secure, resilient and scalable services across a larger federated team of Digital, Data and Technology professionals to deliver impact across the organisation and … the wider UK research and innovation system. Join us for this rare opportunity to apply your experience in offensive security and threat intelligence in a dynamic, fast-paced security operational and strategic role in an organisation at the heart of research and innovation in the UK. Leading the Red Team of penetration testers your broad remit is … toidentify real-world risks to diverse technical landscapes, uncovering security vulnerabilities, actively exploiting findings, assessing additional impacts through post-exploitation, and providing proactive advice to teams on the most effective remediation strategies. The role encompasses the full scope and delivery of penetration testing, including black box network assessments, insider threat evaluations, credentialed application exploitation, and rigorous testing of human More ❯

CYBER SECURITY ENGINEER £90-100,000/Bonus + Excellent Staff Benefits including Strong Pension, Life Assurance Hybrid Working ( 2 Days per Week Onsite ) An interesting opportunity has presented itself within one of the UKs largest Independent Software Based Organisations who are one of a major driving forces behind Innovative Development of Enterprise-Led Internet Technology. They are now … looking for an Cyber Security Engineer to join their existing & high performing large scale In - House Security Team including SOC & Cyber Analysts through to Experienced Cyber Security Engineers & Security Architects. As a Cyber Security Engineer you will focus on the technical side of IT Security, looking at areas such as Application Security & Code … Analysis, ensuring they are Built Securely. The Information & Cyber Security Team deal with the Security of Closed-Sourced, Open-Source & In-House Developed Applications ensuring that All Systems & Services are Built with Privacy & Security by Design. You will be working closely with the wider Security Function &Development Teams, to assist with Application Based Vulnerabilities are Understood More ❯

Cyber Security Consultant (Penetration Tester) Milton Keynes, Buckinghamshire, United Kingdom We are seeking an experienced Cyber Security Consultant (Penetration Tester) . Make an Impact at RSM UK At RSM, our consulting team brings together diverse advisory experts to deliver our six core solutions: business transformation, forensic, deal services, restructuring, finance function support, and risk and governance. Our solutions … our six solutions, expanding our team of expert consultants, embracing a digital-first approach, strengthening our global presence, and building strong client relationships. We are seeking an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you'll deliver offensive security services including digital footprint reconnaissance, social engineering, penetration testing, vulnerability … assessments, and more to high-profile clients across all industries. The purpose of this role is to deliver offensive security services such as digital footprint reconnaissance, social engineering, vulnerability assessments, penetration testing, threat modeling, cyber-attack simulation exercises, and more. You'll benefit from ongoing coaching, career mentoring, and support through our career pathway. You will have opportunities More ❯

our overall success. We invite you to share your perspectives, cultural backgrounds, and innovative ideas; we look forward to your contributions. Join the Vix team as an experienced Cloud Security Engineer! This on-site position in Manchester involves collaborating with our Cloud Operations team and the Security team to maintain robust security protocols. You'll play a … crucial role in guiding our technical teams to meet security standards, successfully passing security audits, and safeguarding both company and customer data. As the first point of contact for security incidents, your expertise will be essential in keeping our systems secure. We regret that this position is only available for UK citizens/Residents with indefinite leave … the UK, with current full time work rights for the United Kingdom, currently residing in the UK. The position is located in Manchester. Responsibilities Evaluate and strengthen our overall security posture by performing continuous audits, risk assessments, threat modelling, and architecture reviews to ensure effective controls and adherence to regulatory standards. Consistently monitor and assess cloud environments for vulnerabilities More ❯

HackerOne is a global leader in offensive security solutions. Our HackerOne Platform combines AI with the ingenuity of the largest community of security researchers to find and fix security, privacy, and AI vulnerabilities across the software development lifecycle. The platform offers bug bounty, vulnerability disclosure, pentesting, AI red teaming, and code security. We are trusted by … a Best Workplace for Innovators by Fast Company in 2023 and a Most Loved Workplace for Young Professionals in 2024. HackerOne is at a pivotal inflection point in the security industry. Offensive security is no longer optional – it is the standard for forward-thinking companies that want to build trust and resilience in a world where AI … driven innovation and adversaries are moving faster than ever. With the industry shifting, HackerOne stands apart: we combine the ingenuity of the largest security research community with a best-in-class AI-powered platform, trusted by the world's top organizations. HackerOne Values HackerOne is dedicated to fostering a strong and inclusive culture. HackerOne is Customer Obsessed and prioritizes More ❯

On-site preferred) Salary: Up to £90,000 + Benefits + Bonus Employment Type: Permanent Overview We are seeking a highly skilled Red Team Specialist to join our clients security function. You will lead and execute offensive security operations, simulating real-world adversaries to identify weaknesses in our organisation's technology, processes, and human controls. This role … is ideal for an individual with deep technical expertise, strong threat-emulation experience, and the ability to translate complex findings into actionable security improvements. Key Responsibilities Plan, execute, and report on red team engagements including full-scope attack simulations Perform targeted adversary emulation across network, application, cloud, and physical domains Develop exploit chains and bypass advanced detection and security … emerging attacker TTPs, threat actors, and exploit techniques Mentor junior team members and contribute to tooling, methodology, and lab development Required Skills & Experience 3+ years' experience in red teaming, offensive security, or advanced penetration testing Strong knowledge of attacker frameworks (e.g., MITRE ATT&CK, NIST adversary simulation guidelines) Highly proficient with red team tools and techniques (e.g., Cobalt More ❯

/Flexible) Salary: Up to £80,000 + Bonus + Benefits Employment Type: Permanent Overview We are seeking an experienced Senior Penetration Tester with a strong background in infrastructure security testing to join a growing offensive security team. The ideal candidate will have deep technical expertise, the ability to lead and independently deliver complex engagements, and a … passion for uncovering and exploiting vulnerabilities across enterprise environments. You will play a key role in strengthening the organisation's security posture by conducting infrastructure-focused assessments, mentoring junior testers, and influencing remediation strategies. Key Responsibilities Deliver internal and external network and infrastructure penetration tests , including on-premises and cloud-hosted environments Perform testing of Windows & Linux infrastructure, Active … Directory, network services, and security appliances Conduct vulnerability exploitation , privilege escalation, and lateral movement to demonstrate full attack paths Lead small engagement teams and oversee delivery quality, documentation, and client communication Produce high-quality, concise, and risk-aligned reports with actionable remediation guidance Support scoping calls, stakeholder workshops, and post-engagement debriefs Contribute to tooling, methodology enhancement, and internal More ❯

+ Commission (8-10%) Network IT is recruiting for a Penetration Testing Account Manager to manage and grow relationships with major enterprise clients within a leading cyber security services provider. This role is ideal for someone who understands penetration testing, vulnerability management or offensive security services — and enjoys working closely with customers to drive long-term success. … new opportunities for growth within established accounts and adjacent sectors. Key Responsibilities Own and develop relationships with large enterprise clients , acting as their trusted advisor across penetration testing and offensive security services. Understand client requirements and work with technical delivery teams to scope and coordinate engagements. Identify upsell and cross-sell opportunities across additional security services, assessments … consultants to prepare statements of work. Represent the company at client meetings, events and industry functions as required. Experience Requirements Proven experience in account management or sales within cyber security, IT services or managed security services . Strong understanding of penetration testing services, security assessments or vulnerability management . Excellent communication and relationship-building skills with CISO More ❯

Job Description – Cyber Security Generalist Manager Role Location – Any UK Salary: Competitive (based on experience) Level: Accenture will be hiring at Manager level Please Note: Any offer of employment is subject to satisfactory BPSS and SC security clearance which typically requires 5 years continuous UK address history usually including no periods of 30 consecutive days or more spent … of application. Note: The above information relates to a specific client requirement Our Cyber Practice is a fast-growing community of industry leading experts. The practice covers Assurance, Compliance, Security Operations (SecOps), Offensive Security and Security Research. It is critical that the relevance and quality of the services that we provide is maintained and augmented and … that the team members have every opportunity to grow and learn with the organisation. We are looking for a cyber security generalist consultant with experience in solving complex cyber security problems utilising your technical expertise and learned experience. As a cyber generalist we expect you to demonstrate advanced skills and a high level of expertise across multiple facets More ❯

Job Description – Cyber Security Generalist Assoc Manager Role Location – Southwest – Bristol/Cheltenham Salary: Competitive (based on experience) Level: Accenture will be hiring at Assoc Manager level Please Note: Any offer of employment is subject to satisfactory BPSS and DV security clearance which typically requires 10 years continuous UK address history usually including no periods of 30 consecutive … of application. Note: The above information relates to a specific client requirement Our Cyber Practice is a fast-growing community of industry leading experts. The practice covers Assurance, Compliance, Security Operations (SecOps), Offensive Security and Security Research. It is critical that the relevance and quality of the services that we provide is maintained and augmented and … that the team members have every opportunity to grow and learn with the organisation. We are looking for a cyber security generalist consultant with experience in solving complex cyber security problems utilising your technical expertise and learned experience. As a cyber generalist we expect you to demonstrate advanced skills and a high level of expertise across multiple facets More ❯

globally recognized cybersecurity leader, serving enterprise and government clients across critical industries. Renowned for its advanced threat detection and red team operations, this organization is at the forefront of offensive security and cyber resilience. Job Title – Red Team Operator Location – Remote (must be located in a Western Europe time zone) Role Type – Contract (6 months, with potential for … extension) Must Have Skills: English speaker (required) Active certification in at least one of the following: Offensive Security OSCP or GIAC GPEN Active certification in at least one of the following: Security+, SSCP, CISSP, CISM, GSEC, GCIH, GSLC, CASP, Network+, CCNA, CCNP, CCIE Proficiency in Python, PowerShell, and Bash scripting Hands-on experience with both Linux and Windows … NMAP Ability to exploit vulnerabilities such as SQL injection, XSS, and conduct password cracking Prior experience on a Cyber Defense Blue Team (e.g., SOC, Incident Response, Threat Hunting, or Security Architecture) Strong understanding of the MITRE ATT&CK Framework Solid grasp of ports, protocols, operating systems, and file system fundamentals Knowledge of computer networking concepts and experience with vulnerability More ❯

Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many more. At CGI you will get the opportunity to work across a number … of domains and work in all areas of Cyber Security allowing you to grow and develop your career. We offer full 360-degree services to our clients from initial consulting on a range of areas including Risk Assessments, Vulnerability Management, Accreditations (ISO27001, GDPR), GRC (Governance, Risk, Compliance), Security Architecture Design and Build (technical and Non-technical), Incident Response … Protective Monitoring Services, Penetration Testing and much more. We take clients through a journey to improve their overall security posture and maturity to ensure they feel reassured in the Security control, measures and systems we have put in place in line with their requirements. At CGI training and development is very important not only do we give you More ❯

Defence capabilities? This role offers the opportunity to contribute to the development and optimisation of advanced threat detection systems within a highly secure environment. You will work within a Security Operations Centre (SOC), designing and maintaining detection logic across SIEM (Security Information and Event Management) and EDR (Endpoint Detection and Response) platforms. Your work will help identify and … and automation workflows to support incident response and continuous improvement. Key responsibilities include: Designing and tuning detection rules and use cases in SIEM and EDR platforms Monitoring and investigating security alerts to identify potential threats Conducting proactive threat hunting using MITRE ATT&CK and threat intelligence sources Collaborating with incident response teams to support investigations and containment Enhancing detection … depth, and clear communication will be well suited to this role. Essential Criteria To be successful, you must demonstrate: Relevant HNC (i.e. Level 4 or higher) qualification in Cyber Security Or Computer Science, or Networks OR certifications such as CompTIA Security+, ISACA OR equivalent experience Strong hands-on experience with SIEM platforms (Elastic Security mandatory; Sentinel or Splunk More ❯

Defence capabilities? This role offers the opportunity to contribute to the development and optimisation of advanced threat detection systems within a highly secure environment. You will work within a Security Operations Centre (SOC), designing and maintaining detection logic across SIEM (Security Information and Event Management) and EDR (Endpoint Detection and Response) platforms. Your work will help identify and … and automation workflows to support incident response and continuous improvement. Key responsibilities include: Designing and tuning detection rules and use cases in SIEM and EDR platforms Monitoring and investigating security alerts to identify potential threats Conducting proactive threat hunting using MITRE ATT&CK and threat intelligence sources Collaborating with incident response teams to support investigations and containment Enhancing detection … depth, and clear communication will be well suited to this role. Essential Criteria To be successful, you must demonstrate: Relevant HNC (i.e. Level 4 or higher) qualification in Cyber Security Or Computer Science, or Networks OR certifications such as CompTIA Security+, ISACA OR equivalent experience Strong hands-on experience with SIEM platforms (Elastic Security mandatory; Sentinel or Splunk More ❯

Detection & Response Engineer Cambridgeshire Based - 1-2 days a week on site We are looking for a highly experienced Senior Detection & Response Engineer to join our client's growing security team. In this critical role, you'll be instrumental in developing a best-in-class incident response function, leading investigations into complex security events, and building scalable detection … and response capabilities across the organisation. This is an exciting opportunity to work at the heart of a modern security operation - building the tools, automation, and processes that enable the business to detect, respond to, and learn from security threats effectively. What You'll Be Doing: Investigate and respond to security events with clarity and precision; triage … analyse, and manage incidents from end to end Develop and improve detection and response processes, technologies, and work flows Design and implement tools to collect and analyse security telemetry from cloud environments Automate security workflows to enhance detection accuracy and reduce response time Build and fine-tune detection rules to focus efforts on high-fidelity alerts Create and More ❯

For further details please visit Purpose of Position The Senior SecOps Engineer's primary responsibility is to provide Pantheon with in depth technical expertise working in Pantheon's IT Security Team. The Senior SecOps Engineer will also participate in technical research and development to enable continuing innovation within the IT security landscape at Pantheon. The role incumbent must … also be required to provide directed support and service for other Pantheon offices around the world. Key Responsibilities Governance – ensure all solutions are implemented in accordance with Pantheon's security best practice. Adhere to applicable regulatory and compliance related operating requirements. Work with systems development and external suppliers to resolve often highly technical or contentious security issues and … conflicts to ensure that projects and work packages are delivered on time and within budget. Actively review, monitor and improve network and cloud infrastructure security, undertake a regular programme of self-audit and base lining by utilising the appropriate tools and in conjunction with formal audits as conducted by both internal audit and external audit & penetration testers. Ensure changes More ❯