1 to 25 of 32 Offensive Security Jobs in London

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. The team tests the security of infrastructure and applications, conducts IT Health Checks, reviews IT configurations, identifies gaps that threat actors could exploit, and makes recommendations to safeguard assets. What you'll be doing … consultancy to internal and external stakeholders. Leading the delivery of PGI's infrastructure penetration testing. Collaborating on the design and delivery of new and existing service lines related to offensive security assessments. Supporting and often leading technical pre-sales, proposal writing, and client engagements. Coaching and supervising junior team members, including resource management, development planning, mentoring, and knowledge … transfer. Analyzing security data to identify patterns, threats, and vulnerabilities. Producing high-quality technical reports that explain vulnerabilities in non-technical language for stakeholders. Performing quality assurance and peer reviews of project reports. Collaborating with colleagues on internal or client projects. Contributing to technical training and development materials. Supporting technical delivery projects to ensure successful outcomes. Mentoring security More ❯

Role Summary: Join our dynamic Offensive Security Team! As we expand, we are looking for a Pentester/Red Teamer who is enthusiastic about undertaking a range of security assessments, including penetration testing, red team exercises, vulnerability scanning, and physical access evaluations for our clients. Key Responsibilities: Client Engagement Management: Lead client projects, ensuring clear communication, timely … delivery, and exceeding expectations. Act as the primary liaison, providing updates and guidance. Security Assessment Execution: Conduct detailed security assessments, including penetration testing and vulnerability analysis. Systematically identify and document vulnerabilities across network, application, and physical layers. Prepare concise reports for both technical and non-technical stakeholders. Red Team Challenges: Participate in red team simulations, encompassing social engineering … writing custom scripts to automate tasks, analyze data, and develop unique tools for penetration testing. This skill is crucial for tailoring attacks, parsing data, and creating efficient workflows in security assessments. Linux/Windows Proficiency: Have a thorough understanding of Linux/Windows systems, which are commonly used in security environments. This includes navigating the command line, understanding More ❯

The team you'll be working with: Consultant - Offensive Security Testing Role Overview: We are seeking a highly skilled and experienced Offensive Security Consultant with a strong focus on threat intelligence and attack methods. The ideal candidate will manage and conduct advanced penetration testing engagements, leveraging threat intelligence to simulate real-world attacks across various environments … applications, cloud infrastructure, and APIs. This role requires a deep understanding of adversarial tactics, excellent communication skills, and the ability to provide strategic, actionable recommendations to enhance our clients' security posture. What you'll be doing: Responsibilities: Lead and manage the full lifecycle of complex penetration testing engagements, applying a threat intelligence-led approach. Execute advanced penetration tests across … and schedule testing engagements based on threat assessments and client needs. Produce clear, detailed reports with technical findings, business impact, and strategic remediation recommendations for diverse audiences. Communicate complex security concepts and threat insights effectively to technical and non-technical stakeholders. Collaborate with client IT and cybersecurity teams to improve security protocols and address vulnerabilities. Monitor remediation efforts More ❯

respecting, including, and valuing one another. As part of One team, One Kroll, you'll contribute to a supportive and collaborative work environment that empowers you to excel. Our Offensive Security professionals are on a mission to make the world a safer place, one company at a time. We believe that our work to help our clients discover … and remediate their unique security risks makes every one of us safer. Our clients trust us to use cutting-edge offensive security tools, creativity, imagination, and expert knowledge to find cybersecurity risks in their networks, systems, and software. We're looking to grow our team of penetration testers in the UK. We test web and mobile applications … computer networks, cloud infrastructure, hardware devices, security awareness through social engineering, organizations through red and purple team exercises, and more. At Kroll, your work will help deliver clarity to our clients' most complex governance, risk, and transparency challenges. Apply now to join One team, One Kroll. What you'll do As an Offensive Security Consultant, you'll More ❯

THE ROLE NextEnergy Group develops, builds, and operates large-scale solar Photovoltaic (PV) assets and battery storage projects across Europe. As our Security & Information Security Architect, you will set the security vision and implement secure-by-design principles for every layer of the organization — from field-level Operational Technology networks and real-time trading engines right through … to corporate business systems. A critical dimension of the role will be tight collaboration with: Data Protection Officer (DPO): embedding privacy-by-design, supporting DPIAs and audits Network & Security Engineering team: turning architecture patterns into robust, monitored, and recoverable configurations in production External security advisors & key technology suppliers to align architectural controls with best practice guidance, managed service … This is a strategic yet hands-on role that balances secure-by-design principles with practical delivery across cloud, on-prem, and SaaS estates. KEY RESPONSIBILITIES Set & evolve enterprise security architecture (reference models, standards, patterns) covering IT, OT and hybrid-cloud environments that collect, process and trade renewable-generation data Embed security & privacy requirements into solution designs, CI More ❯

THE ROLE NextEnergy Group develops, builds, and operates large-scale solar Photovoltaic (PV) assets and battery storage projects across Europe. As our Security & Information Security Architect, you will set the security vision and implement secure-by-design principles for every layer of the organization — from field-level Operational Technology networks and real-time trading engines right through … to corporate business systems. A critical dimension of the role will be tight collaboration with: Data Protection Officer (DPO): embedding privacy-by-design, supporting DPIAs and audits Network & Security Engineering team: turning architecture patterns into robust, monitored, and recoverable configurations in production External security advisors & key technology suppliers to align architectural controls with best practice guidance, managed service … This is a strategic yet hands-on role that balances secure-by-design principles with practical delivery across cloud, on-prem, and SaaS estates. KEY RESPONSIBILITIES Set & evolve enterprise security architecture (reference models, standards, patterns) covering IT, OT and hybrid-cloud environments that collect, process and trade renewable-generation data Embed security & privacy requirements into solution designs, CI More ❯

A global quantitative trading firm specializing in algorithmic and high-frequency trading (HFT) is hiring a Cyber Security Engineer (2-4 years' experience) to operate in a broad, vendor-agnostic security environment. This fully onsite role (5 days per week) offers exposure to cutting-edge security challenges across multiple domains. This is an opportunity to deep-dive … into security engineering, incident response, and automation in a high-impact role. If you're a technically strong, hands-on engineer looking for broad exposure and real security challenges, we want to hear from you! Responsibilities Owning security projects end to end - from design to execution Engineering, automating, and securing infrastructure, networks, and cloud environments Hands-on … engagement in Incident Response, security assessments, and remediation Working across networking, firewalls, and security (Palo Alto, Fortinet, all major cloud providers) Building and automating with Terraform, Ansible, Golang, Python, HashiCorp Leveraging offensive security knowledge (OSCP, Hack The Box, pentesting, SQL injection, homelabbing) Collaborating with multiple teams and communicating effectively across the business Skills & Requirements Security More ❯

Job Title: Security Testing Consultant (Penetration Testing) Location: London SE1 (with hybrid working available post-probation) Salary: 45,000 - 60,000 + benefits Are you a skilled Penetration Tester looking to join a collaborative and mission-driven cyber security team? This Security Testing Consultant position offers the chance to deliver high-impact security assessments across web … applications, infrastructure, cloud platforms, APIs, mobile, and wireless systems. You'll be part of a close-knit team delivering trusted security testing and advisory services for clients across various industries. If you're passionate about offensive security and want to contribute to Red Team activities while supporting junior team members, this role is for you. What You … and Qualys. Knowledge of AWS, Azure, or Google Cloud platform security. At least 2 certifications from: CREST CRT, OSCP, OSCE, or CCT. Desirable Extras: Experience with CI/CD security and container technologies like Docker. Knowledge of Red Team operations, CobaltStrike, bug bounty programs, or IoT/AI/LLM security. Hands-on coding or scripting knowledge and an More ❯

Job Title: Security Testing Consultant (Penetration Testing) Location: London SE1 (with hybrid working available post-probation) Salary: £45,000 - £60,000 + benefits Are you a skilled Penetration Tester looking to join a collaborative and mission-driven cyber security team? This Security Testing Consultant position offers the chance to deliver high-impact security assessments across web … applications, infrastructure, cloud platforms, APIs, mobile, and wireless systems. You'll be part of a close-knit team delivering trusted security testing and advisory services for clients across various industries. If you're passionate about offensive security and want to contribute to Red Team activities while supporting junior team members, this role is for you. What You … and Qualys. Knowledge of AWS, Azure, or Google Cloud platform security. At least 2 certifications from: CREST CRT, OSCP, OSCE, or CCT. Desirable Extras: Experience with CI/CD security and container technologies like Docker. Knowledge of Red Team operations, CobaltStrike, bug bounty programs, or IoT/AI/LLM security. Hands-on coding or scripting knowledge and an More ❯

team operations. This is a hands-on, client-facing position suited to someone who thrives in technically demanding scenarios and wants to work alongside a small, elite team of offensive security specialists. Key Responsibilities Lead and execute complex penetration tests and adversary simulations Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK Develop More ❯

of the mid-market, ensuring both excellent client serviceand identification of further work opportunities. The role will involvemanaging the delivery of agreed work activities with a primary focus ontechnical security including offensive security services. You'll benefit from ongoing coaching, career mentoring, and be supported by ourcareer pathway. You will have an opportunity to continue to develop … marketleading skills across our different capabilities and advance your professionaldevelopment. You'll make an impact by: Responsible for planning and delivering cyber security engagements, from scoping through to delivery, debriefs and report writing. Contributing towards the development of exciting new market facing offensive security cyber security products and services. Supporting the development of other members of … passionate about making improvements, this role is perfect for you! We value diverse experiences and perspectives. Here's what we're looking for in our ideal candidate: Experience delivering offensive security and penetration testing engagements. Experience of delivering and leading cyber security advisory and offensive security testing engagements in a professional services context. Understand technology More ❯

Principle Security QA Consultant - SC Cleared - Inside IR35 Remote with travel to Croydon 6 months+ contract ASAP Start £600-650 per day The Role Our client is currently developing an internal Security Testing capability that will operate out of the Quality Assurance and Testing function. As a Principle Cyber Security Professional, your role will be embedded in … the Cyber Security function working day to day with senior security stakeholders to lead the continued development of the security testing service and represent security testing for the client. Communication and professionalism are critical for this role as you will be working collaboratively with senior Security colleagues across the organisation on a day-to-day … basis. Working within Security Testing, you will play a leading role in delivering security testing, vulnerability assessment and continual security compliance capabilities in order to secure services and to ensure the best possible technical security risk-based advice is given to our customers. You will work collaboratively with key business & technical stakeholders, to deliver appropriate security More ❯

architecture governance You have strong experience with Guidewire and/or Verisk You have public cloud experience, ideally multi-cloud, AWS, Azure, GCP You have a good understanding of security concepts such as IAM and Offensive Security You have a strong understanding of the end-to-end technology delivery cycle with experience of working with Agile teams More ❯

architecture governance You have strong experience with Guidewire and/or Verisk You have public cloud experience, ideally multi-cloud, AWS, Azure, GCP You have a good understanding of security concepts such as IAM and Offensive Security You have a strong understanding of the end-to-end technology delivery cycle with experience of working with Agile teams 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 ❯

Head of Offensive Security Consulting, Europe | Client Facing/Security | Global Security SaaS I've partnered with one of the most exciting upcoming global security SaaS companies who are looking for a Head of Offensive Security Consulting for their Europe region. Their product specialises in attack surface management and automated red teaming. It … managing three internal European based teams. On the client side, you'll be the most senior technical individual representing the company so you'll need a strong background in security, ideally offensive security (red teaming/pen testing). You'll be liaising directly with Fortune500/Global Banks & Insurance companies (typically speaking to CISOs), understanding their … it is more man management and pointing fingers rather than getting in the mix of it. What's in it for you? Working closely with colleagues who LOVE everything security/product Opportunity to be constantly speaking to security leaders at enterprise organisations Grow with a growing company and be an established leader and lead offensive security More ❯

Role: Offensive Security Specialist Type: Permanent Location: Remote (UK) Clearance: Eligible for SC Interested in getting away from the grind of endless similar penetration tests? Keen to stretch yourself into a more managerial role over time, building up a capability around you? We are working with a leading security services provider who are in the process of … standing up their Offensive Security capability. The work will be focused on providing services such as Web App testing, Infrastructure testing and Code Review services to clients whilst also looking at how to develop that side of the company further. This role has a unique blend of hands on, technical work that would suit someone looking for something … a bit different from either just doing technical tests forever or moving away from the keyboard fully. Key Responsibilities: •Work to develop the Offensive Security capability for the organisation into a market leading function •Customer engagement, through the scoping process, tool selection and overall delivery •Run and take ownership of services such as Vulnerability Assessments, Code Review and More ❯

Description The Offensive Security Manager is responsible for the provision of penetration & red team testing services to the business, including leading teams, creating processes, and management of technologies & 3rd parties that make up the service. The role reports to the Director of Offensive Security. The position does not need to be filled by a hands-on penetration …/red tester, as organizational, leadership, relationship and supplier management skills are the key focuses of the role but will need to have a good understanding of security vulnerabilities and testing methodology to be able to understand the subject matter of the service and manage quality. The role will work closely alongside the rest of the Cyber Team (e.g. … Vulnerability Management), the wider Information & Cyber Security function (e.g. Project Assurance) and leaders in operational IT teams to ensure accurate detection, and the prioritized, timely and appropriate resolution of security vulnerabilities. We are looking for a collaborative team player, with a good technical knowledge and the ability to lead others and experience working with 3rd party service providers. More ❯

Sr. Security Engineer, AppSec - Amazon Stores Security Job ID: Amazon Development Centre (London) Limited At Amazon, security is central to maintaining customer trust and delivering delightful customer experiences. Our organization is responsible for creating and maintaining a high bar for security across all of Amazon's products and services. We offer talented security professionals the … pipelines, from leading-edge digital healthcare to no-checkout retail, we push the boundaries of technology in every direction using the globe's largest AWS deployment. As a Senior Security Engineer, you will collaborate with software development teams to ensure we keep our customers safe while developing these novel services. In a given day, you might be inspecting an … application's code for security issues, building a new framework to help our software developers build faster and more securely, or fine-tuning the design for a new service alongside its software developers. The ideal candidate combines technical acumen with an ability to lead by influence and communicate clearly. Technically, this person will be a security generalist with More ❯

We're Hiring: Security Consultant Ready to break things (ethically) and make the digital world safer? We're on the hunt for a Security Consultant to join our top-tier cyber team! What you'll do: Penetration testing & red teaming across on-prem, cloud & hybrid Hack into AD, Entra ID (Azure AD), AWS, GCP, and more Work with … remediation teams to fix real-world issues Help shape our tools & testing methods Collaborate, share, and grow with a supportive team What we're looking for: Proven offensive security skills Strong knowledge of AD & cloud platforms Curiosity and willingness to learn beyond your comfort zone Ideally working towards, or already hold CSTM or CRT Why Sapphire? Cutting-edge … projects Inclusive culture Real impact on client security Apply now and make cyber safer with us! Sapphire is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. More ❯

Do you have a passion for high scale services and working with some of Oracle's most critical customers? We are seeking an experienced, passionate, and talented cyber security engineer with a deep interest in vulnerability management and cloud security. This position is designed for technical security engineers adept at navigating the complexities of cloud security and … leading efforts to increase security posture. In this key role, you will critically assess security architecture decisions, and lead the charge in secure planning, development, and coordination. Your expertise will guide the team through intricate cloud security challenges, ensuring our defences are both robust and adaptable. Who We Are We are a world-class team of high … calibre application security researchers and engineers who thrive on new challenges. We are an inclusive and diverse team with a full spectrum of experience distributed globally. We have the resources of a large enterprise and the energy of a start-up, working on a critical Greenfield software assurance project collaboratively with our cloud and mobile engineering teams. The Software More ❯

client is a multi-international transportation technology company, and they are looking for a Pen tester here in Toronto. If you'd like to grow your skill set in Offensive Security, this is the place. You'll be able to gain hands-on experience. Contract Duration: 6 Months (Possible Extension) What You Will Be Doing Tech Breakdown … Automation 50% Manual Daily Responsibilities SQL Injection & Cross-site scripting Grey box penetration testing, and perform access control Identify and exploit vulnerabilities to assess security risks. Communicate with clients about security issues and provide tailored solutions. Collaborate with developers and security teams to remediate discovered vulnerabilities. Develop detailed reports with findings and recommendations. Assist/Create rules More ❯

years of experience in professional software development. Strong programming skills. Great skills in data engineering and big data technologies. Highly skilled with object-orientation and software development best practices. Offensive Security Certified Professional (OSCP) . Certified Information Security Manager (CISM) . Information Systems Security Architecture Professional (ISSAP) is essential. Certified Authorization Professional (CAP) . Information Assurance … listed DoD 8570 Certifications. INTERVIEW PROCESS: STAGE 1: COGNITIVE ABILITY TEST STAGE 2: COGNITIVE ASSESSMENT SCREENING: WITH A 30+ YEARS EXPERIENCE PSYCHOLOGIST STAGE 3: PRE-SCREENING (verification checks & DV security clearance) STAGE 4: INTERVIEW WITH THE CEO, CTO & GC More ❯

of Data Processing and Governance, and V.P of Software Engineering and Advanced Analytics to determine technical requirements and will undergo a formal approval, review, and voting by representatives for security impact analysis (the Change Approval Board). WHAT ARE WE LOOKING FOR: A proven record of implementation of method transformers. The technical ability to convert one data-frame into … Python, R, Scala, SQL, JAVA, C++, and C#. 10+ years of experience as a Software Engineer. Extensive experience in AI-powered software development management and advanced analytics. Certified Information Security Manager (CISM) is essential. Offensive Security Certified Professional (OSCP), Certified Information Security Manager (CISM) is essential. Certified Authorization Professional (CAP) Information Assurance System Architecture and Engineer … the listed DoD 8570 Certifications. INTERVIEW PROCESS: STAGE 1: Cognitive Ability Test STAGE 2: Cognitive Assessment Screening with a 30+ years experienced psychologist STAGE 3: Pre-Screening (verification checks & security clearance) STAGE 4: Interview with the CEO, CTO & GC More ❯

Senior Digital Forensic & Incident Response Analyst - Remote - Circa £80,000 My client is a DFIR and offensive security specialist consultancy looking to expand their DFIR capabilities by onboarding an experienced technical DFIR analyst. This position will be remote, with occasional attendance at client sites to provide containment and remediation services to a range of clients. Responsibilities of a More ❯