1 to 25 of 32 Remote Offensive Security Jobs in the UK

Offensive Security Senior Manager page is loaded Offensive Security Senior Manager Apply locations Kingston Head Office time type Full time posted on Posted 4 Days Ago time left to apply End Date: August 15, 2025 (9 days left to apply) job requisition id R-80651 Please Note: The deadline for applying is 23.59 the day before … the job posting end date. Job Title: Offensive Security Senior Manager Business Function: Cyber Security Location: Kingston Head Office Unilever is one of the world's leading suppliers of Food, Home, and Personal Care products with sales in over 190 countries and reaching 3.4 billion consumers a day. Unilever has more than 400 brands found in homes … diverse businesses and increasing representation of diverse groups in our advertising. Find out more about our commitment to equity, diversity, and inclusion on our website . Unilever's Cyber Security team is a global, product-led function aligned to the NIST Cyber Security Framework. We deliver capabilities across governance, protection, detection, response, and recovery to safeguard our people More ❯

Please Note: The deadline for applying is 23.59 the day before the job posting end date. Job Title: Offensive Security Senior Manager Business Function: Cyber Security Location: Kingston Head Office Unilever is one of the world's leading suppliers of Food, Home, and Personal Care products with sales in over 190 countries and reaching 3.4 billion consumers … diverse businesses and increasing representation of diverse groups in our advertising. Find out more about our commitment to equity, diversity, and inclusion on our website . Unilever's Cyber Security team is a global, product-led function aligned to the NIST Cyber Security Framework. We deliver capabilities across governance, protection, detection, response, and recovery to safeguard our people … operations, and digital assets. Operating alongside our Technology and Data teams, Cyber Security enables secure innovation and resilience across our global business. Our structure is built around product families and risk-based priorities, with teams embedded across regions and business units. JOB PURPOSE We are looking for a technically exceptional and visionary Senior Manager to lead our Offensive More ❯

month contract in a Work from Office (WFO) role. This role will focus on creating a business strategy, gap analysis and implementation, for securing their Azure-based infrastructure, integrating security automation, ensuring PCI DSS compliance, vulnerability and penetration testing and incident response. This role will focus on developing and maintaining secure, scalable Azure DevOps pipelines and Infrastructure as Code … IaC) using Terraform. Their ideal candidate will have a strong background in cloud security best practices, automation, and a proactive approach to integrating security across their software delivery lifecycle. A key part of this position will also involve mentoring an internal engineer, developing structured security policies, and managing Sentinel, Defender and SOAR solutions for automated threat response. … Additionally, the role requires liaising with third-party support partners to coordinate security solutions, manage incidents, and enhance overall cybersecurity posture. Responsibilities Infrastructure Security: Architect and secure Azure-based infrastructure using Terraform, ensuring adherence to security best practices by developing, maintaining, and optimizing Terraform code. DevOps Pipeline Development and Maintenance: Design, develop, and optimize Azure DevOps pipelines 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 ❯

a long history of creating magical moments for our customers! We're not about selling products - we want to solve problems and change lives through Monzo ️ At Monzo, our Offensive Security team is an integral part of our wider Security Collective, a passionate group dedicated to enhancing Monzo's security posture and ensuring a safer environment … advice to mitigate issues. We're also deeply committed to fostering diversity within our team, believing that a variety of perspectives makes us stronger. Leading and scaling our dynamic Offensive Security team Owning and continually improving our team's processes and methodologies Acting as the main point of contact for other teams, fostering collaboration and sharing offensive security knowledge Engaging in strategic planning for the team's long-term direction Reviewing bug bounty reports and making authoritative decisions as well as scaling the program beyond where it is now Performing hands-on security testing across a broad range of areas, from web applications to red teaming Mentoring junior team members, guiding their development and More ❯

a long history of creating magical moments for our customers! We're not about selling products - we want to solve problems and change lives through Monzo ️ At Monzo, our Offensive Security team is an integral part of our wider Security Collective, a passionate group dedicated to enhancing Monzo's security posture and ensuring a safer environment … advice to mitigate issues. We're also deeply committed to fostering diversity within our team, believing that a variety of perspectives makes us stronger. Leading and scaling our dynamic Offensive Security team Owning and continually improving our team's processes and methodologies Acting as the main point of contact for other teams, fostering collaboration and sharing offensive security knowledge Engaging in strategic planning for the team's long-term direction Reviewing bug bounty reports and making authoritative decisions as well as scaling the program beyond where it is now Performing hands-on security testing across a broad range of areas, from web applications to red teaming Mentoring junior team members, guiding their development and More ❯

Offensive Security Engineer - 100% Remote, Blockchain, DeFi About Halborn Inc Our mission is to provide value-add security services and products to the world's most cutting edge technology firms and that starts with blockchain tech. Founded in 2019, Halborn is an elite cyber security company focused on solving complex adversarial problems unique to the cryptocurrency … as new startups with high growth trajectories. Our Culture Halborn is a globally distributed team of 100+, looking to grow our elite team of white hat hackers, sales professionals, security engineers and DevSecOps specialists who value independence, want to make their own hours, work for themselves and have a passion for the ever evolving cryptocurrency industry. Our Commitment to … does not have a signed agreement with Halborn Inc. Responsibilities Conduct realistic adversary simulations from conception through reporting. Perform testing on systems, applications, networks, and processes. Research cutting-edge offensive security techniques. Develop tools and exploits. Communicate clearly and effectively, both written and orally, regarding risks and required remediations. Work collaboratively and independently on unique or specialized assignments More ❯

the right data to the people who need it, our platforms empower our partners to develop lifesaving drugs, forecast supply chain disruptions, locate missing children, and more. Our Product Security team works on secure-by-design and deep product partnership. We build strong relationships with other teams and help them build secure software. This includes reviewing early-stage designs … defense, intelligence, and commercial applications. We are trusted by our customers to protect their mission-critical information in the face of advanced persistent threats. The mission of the Application Security Team is to enable developers to be highly productive, agile, and produce the most secure software possible. Given the mission critical work that Palantir does, investments in application security have never been more important. As an Application Security Engineer, you will be hands-on and have wide-ranging impact for the security of Palantir: • Product security reviews . You will perform full-scope security reviews of our current and future product and service portfolio. This includes whitebox, greybox, and blackbox assessments. You will work More ❯

Are you ready to take the lead in offensive security? Join a multi award winning cybersecurity provider recognised for delivering world class managed security services, CREST accredited penetration testing, and cutting edge cyber defence strategies. With a proven track record of helping organisations strengthen their security posture and stay ahead of evolving threats, the team has … become a trusted partner for enterprises across highly regulated industries, including finance, government, and critical infrastructure. The team is seeking a Lead Penetration Tester to own and elevate its offensive security program. In this fully remote, outside IR35 contract role, the position involves defining and executing end to end infrastructure and web app testing strategies, mentoring a team … and compliance requirements Advanced Assessment & Analysis - Personally conduct deep-dive tests on high-risk systems, interpret results, and translate findings into clear, actionable remediation roadmaps Continuous Improvement - Keep our offensive security playbook current -evaluate new tools, techniques and threat intelligence, and introduce enhancements to testing frameworks Stakeholder Collaboration - Engage senior engineers, architects and risk teams to align on More ❯

Summary: CCL Solutions Group is seeking an exceptional Senior Penetration Tester with CHECK Team Leader Infrastructure (CTL-INF) qualifications to join our elite team of security professionals. Location: Home based Main Job Summary This is more than just a job, we're looking for individuals with a hacker's mindset, deep technical expertise, and a relentless drive to secure … the UK's most critical assets. You will be leading engagements across secure environments, delivering high-impact assessments, mentoring team members, and shaping the offensive security direction of the business. In return, we offer a highly supportive environment with structured mentoring, paid training days, and access to advanced tooling. Main Duties & Responsibilities (other duties may be assigned): CCL … risks, remediation strategies, and technical impact. Support red team simulations, infrastructure reviews, and adversary emulation where required. Contribute to internal R&D, tooling improvements, and the development of our offensive security services. Required Skill Set & Experience: This role requires a senior and mature person who can demonstrate leadership, honesty and integrity and who expects high standards. Please understand More ❯

Join the Rebel Alliance: Penetration Tester Needed to Outsmart the Dark Side! Are you passionate about offensive security and hacking? So are we! Do you get excited every time you get your reverse shell back? Same here - no matter how many hundreds of times that happened! SECFORCE is a dynamic penetration testing company, with a presence in London … UK, Malta, Greece, Italy, Spain or Poland. Who are we? We are a young team and we promote a fun working environment. We enjoy hacking and are passionate about security testing. However, we also work hard and we believe we are one of the very best testing companies in the world. For example - we are the youngest CBEST-accredited … company. Tasks We are looking for a techie passionate about offensive security who wants to grow their skills . As such, your primary function will be to deliver penetration testing assessments. Requirements Required Skills: Familiarity with infrastructure and web application vulnerabilities Great communication/presentation skills Ability to write deliverables to a high standard (in English) Ability to More ❯

Cyber Security Analyst £600 - £730/Day Inside IR35 UK Remote 83 Working days, adhoc We are seeking a Cyber Security Analyst for our Government client The Home Office on a fully remote basis. This role is 86 working days from start date to Feb 2026, adhoc days as and when needed, paying between £600 - £730/Day … Cybersecurity Analyst (CySA+) or a similar certification GIAC Cyber Threat Intelligence (GCTI) or a similar certification GIAC Reverse Engineering Malware (GREM) or a similar certification Certified Ethical Hacker (CEH) Offensive Security Certified Professional (OSCP) or a similar certification*HM will accept 2 of the above qualifications* Data analysis and visualisation Understanding of Cybersecurity Concepts and Threat Intelligence Internet … infrastructure/security architecture If you are interested in the above role - Click the "Apply Now" button now for immediate review Cyber Security Analyst, Security Analyst, Security, OSCP, ETHICAL HACKER, Cyber Security Analyst, Cyber Security Analyst, DV CLEARANCE, DV CLEARED, CYBER ATTACK, Cyber Security Analyst As a member of the Disability Confident Scheme More ❯

Senior Cyber Security Architect page is loaded Senior Cyber Security Architect Apply locations Belfast Birmingham Derry-Londonderry Homeworker - UK time type Full time posted on Posted 2 Days Ago job requisition id JR_15730 Join Kainos and Shape the Future At Kainos, we're problem solvers, innovators, and collaborators - driven by a shared mission to create real impact. … that celebrates creativity and collaboration. Ready to make your mark? Join us and be part of something bigger. Main purpose of role & level in the business: As a Senior Security Architect in Kainos, you'll be responsible for the design and application of industry leading security practices in the platforms and services we build for our customers. Our … in variety, from visa and passport processing systems tohospitalmedical record platforms and globalfinancial management andHCM systems. You'll work with Agile delivery teams to ensure that they follow good security practices throughout the software development journey. You'll learn about and apply new technologies and approaches, with talented colleagues who will help you develop and grow. You'll share More ❯

environment. Maintain quality and consistency across PTaaS deliveries through standardization, process optimization, and internal knowledge sharing. Continuously refine delivery practices by learning from each engagement and staying current with offensive security trends and tools. Contribute to pre-sales technical scoping and product discussions as an experienced technical voice within the Solutions Engineering function. What you'll bring At … on penetration testing experience across domains such as web applications, APIs, infrastructure, and mobile. Proven ability to lead and deliver penetration testing engagements in a consulting, delivery, or internal security capacity. Strong communication skills, with the ability to tailor technical content to both technical and non-technical audiences. Familiarity with PTaaS models, bug bounty platforms, and crowdsourced testing is … with internal teams and external partners. Operate with strong independence and ownership, taking initiative to deliver value with limited oversight while navigating ambiguity and evolving priorities. Genuine passion for offensive security, with a growth mindset and eagerness to learn, adapt, and evolve. Relevant certifications are highly valued, including (but not limited to): CREST: CRT, CCT-INF, CCT-APP More ❯

20+ years! Culture at Intermedia is built on teamwork and transparency. We hold each other accountable and always have each other's back! About the role: Intermedia's Information Security team is seeking a Senior Security Engineer with a strong passion for threat detection, incident response, and security engineering. The ideal candidate thrives in digging through data … to find anomalies, identifying root causes, uncovering malicious activity, recommending corrective actions, and working cross-functionally to drive remediation and strategic improvements. Key Responsibilities Security Monitoring & Incident Response Monitor and triage security alerts from SIEM, EDR, and other tools; escalate and respond as needed. Investigate security incidents, determine root cause, document findings, and develop IOCs to prevent … recurrence. Support escalations from internal employees or customers with security-related concerns. Security Engineering & Tooling Assist with security reviews related to infrastructure and system changes. Build, enhance, and maintain internal security tooling and scripting repositories. Contribute to the development of detection content, alert tuning, and automation pipelines. Strategic & Team Contributions Drive annual security team goals More ❯

Location: Central London, Greater London - United Kingdom Type: Permanent Senior Red Team Operator Location: Remote (UK-based) Salary: £75,000 - £98,000 + Discretionary Bonus Are you a seasoned offensive security professional ready to take your expertise to the next level? This is an opportunity to join a cutting-edge Red Team, where you'll emulate real-world … test and improve organizational resilience. Identify and exploit weaknesses in systems, processes, and human behavior. Collaborate with stakeholders to communicate findings and recommend mitigation strategies. Research and develop new offensive techniques, tools, and methodologies. What We're Looking For: Proven experience in Red Teaming or offensive security roles. Deep understanding of Command and Control frameworks. Strong technical … least one programming language. Highly Valued Skills: Strategic thinking and business acumen. Experience in risk assessment and control implementation. Ability to lead or contribute to multi-year, cross-functional security initiatives. This role offers the chance to work remotely within the UK, with access to industry-leading tools and a collaborative environment focused on continuous improvement and innovation. Reference More ❯

Location: Cambridge, UK (hybrid) with travel to the office twice per week. We are looking for an experienced Security Engineer to join our Cyber team. You will help us build out a world class incident response function that will navigate challenging security incidents, drive process improvement, develop an open culture where we grow from our mistakes as an … across all threats to our Studio and gaming environments. Please note that this position will require participation in an on-call rotation. What you'll be doing: Respond to security events, triage, perform investigations, incident analysis, and communicate clearly and efficiently to stakeholders Contribute to improving processes, procedures, and technologies used for detection and response, enabling us to improve … after each incident Develop and run tools to gather security telemetry data from cloud production systems Automate workflows and improve identification and response time for security events Build and optimize detection rules, allowing us to spend our cycles on the alerts that matter Develop runbooks and incident playbooks for new and existing detections Lead Threat hunting practices, suggest More ❯

our six solutions, expanding and developing our team of expertconsultants, embracing a digital-first approach, strengthening our globalpresence, and building strong client relationships We are seeking an enthusiastic Cyber Security Consultantto join our team. Working alongside ourexperienced team of specialists, you'll be delivering offensive … securityservices including digital footprint reconnaissance, social engineering,penetration testing and vulnerability assessments and more to high profileclients across all industries. The purpose of this role is to deliver our offensivesecurity services including digital footprint reconnaissance, socialengineering, vulnerability assessments, penetration testing, threat modelling,cyber-attack simulation exercises, and more to high profile clients across allindustries. The purpose of this role is … to deliver our Cyber Security services across our broad range of assurance and advisory engagementsto high profile clients across all industries. We are seeking an enthusiastic Cyber Security Consultantto join our team. Working alongside ourexperienced team of specialists, you'll be delivering cyber risk and control assessments,developing cyber programmes as well as delivering offensive security More ❯

At Instil we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a Mid/Senior Penetration Tester to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments … across a range of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients fortify their systems. We offer varied, challenging work in a supportive environment where you will find yourself constantly evolving and learning, whilst studying towards CREST (CPSA/… Working Flexible Working Hours Summer Working Hours 35 Days Holiday Private Pension (8% Employer, 5% Employee) Private Healthcare Life Assurance Cycle to Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with More ❯

At Instil we specialise in providing human-focused security and penetration testing services for web applications, cloud infrastructure and mobile applications. The Role We are looking for a Penetration Tester to join our dynamic team based in Belfast. As a Pen Tester, you will be part of the delivery team, conducting penetration tests and vulnerability assessments across a range … of technologies and a wide range of customers including software, fintech, manufacturing, engineering, legal, and public sector. Your insights will be crucial in identifying security weaknesses and helping clients fortify their systems. We offer varied, challenging work in a supportive environment where you will find yourself constantly evolving and learning, whilst studying towards CREST (CPSA/CRT/CCT … in Northern Ireland. Competitive Salary & Annual Bonus Hybrid Working Flexible Working Hours Summer Working Hours 35 Days Holiday Life Assurance Cycle to Work Scheme Day to Day Probe & exploit security vulnerabilities in client's Infrastructure/cloud, Web Applications and Mobile Applications using a variety of penetration tests. Write detailed reports outlining vulnerabilities and providing actionable recommendations. Collaborate with More ❯

Are you a Penetration Tester with a passion for working in the government and defense sectors? Join a global consultancy specializing in security and risk management, helping organizations understand threats to their critical assets and implement intelligent security solutions. With a strong presence in the UK and operations worldwide, the company enable clients to navigate complex security challenges, ensuring the safety of their people, data, and reputation. The company is looking for a skilled Penetration Tester/Vulnerability Assessor to join the growing security team. If you would like to learn more about this opportunity, feel free to reach out and apply today! Key Responsibilities: Perform vulnerability assessments and penetration tests against infrastructure, web applications … best practices (e.g. OWASP, NIST, CHECK) Contribute to continuous service improvements and knowledge sharing within the team Stay up to date with emerging threats, tools, and techniques in the offensive security space Essential Skills and Experience: Hands-on experience with penetration testing or vulnerability assessments (commercial or demonstrable practical knowledge) Familiarity with tools such as Burp Suite, Nmap More ❯

on threat intel and adversary emulation. Deep understanding of OT/IT systems, common vulnerabilities, network protocols, cryptography, and attack vectors. Proficiency in tools and frameworks used in both offensive security and threat intelligence. Proven ability to scope, manage, and deliver complex engagements with excellent communication across technical and non-technical stakeholders. CREST CRT/CHECK (or higher … Clearance. Desirable Skills: Experience with Breach Attack Simulation tools and vulnerability management processes. Familiarity with ISO 27001, risk management frameworks, and compliance-oriented testing. Hands-on knowledge of cloud security in AWS, Azure, or GCP. Advanced cybersecurity certifications such as CISM, CISSP, CREST CCT, or ECSA. Location: London-Based Hybrid/Remote Options Available Benefits: Work in a high … impact role where your expertise directly influences the resilience of major organisations. Join a collaborative, technically elite team focused on cutting-edge offensive techniques and driving genuine security improvements. Salary: Up to £90,000 Per Annum (Basic More ❯

A UK-based cyber security consultancy is seeking a CHECK Team Member or Team Leader certified Penetration Tester to join their growing offensive security team. This is an opportunity to work on high-assurance engagements across public and private sector clients, delivering technical assessments to support risk reduction, compliance, and threat readiness. Key Responsibilities Deliver infrastructure and More ❯

About Us: Beazley Security is a global cybersecurity firm committed to helping clients enable advanced cyber defences that reduce risk with quantifiable results. We’re comprised of top talent from private industry, government, intelligence, and law enforcement who are specialists in threat detection, incident response, digital forensics, offensive security, risk management, and cyber resilience. As a subsidiary … Beazley Insurance, we’ve been at the forefront of cyber insurance management and breach response activities for business clients in the US, UK, and Europe since 2017. As Beazley Security, the company will have an expanded scope, leveraging nearly two decades of cyber incident experience, a strong services division, and a business strategy focused on growth, to realize our … We believe these values are essential to creating a strong and inclusive workplace culture, as well as to delivering world-class cybersecurity solutions to our clients worldwide. As Beazley Security, these values will continue to thrive, with an extra emphasis on the expansion of our capabilities and capacity to help solve unique client challenges. Summary: We are seeking a 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 More ❯