1 to 25 of 143 Offensive Security Jobs

months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud … Security Assessments Be mentored and trained towards Adversarial Simulation , Red Team Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate with a team of skilled professionals and contribute to knowledge sharing Requirements: Minimum 6 months of practical penetration testing experience (freelance, consultancy, or internal testing roles … considered) OSCP certification is essential (OSEP, OSCE3, or other advanced Offensive Security certifications also accepted) Demonstrable knowledge of Web Application security , including common vulnerabilities (e.g., OWASP Top 10) Strong desire to deepen technical capabilities across various domains, including infrastructure, cloud, and red teaming Excellent written and verbal communication skills Full right to work in the UK (UK More ❯

months of hands-on penetration testing experience and a strong interest in developing advanced technical skills. This is a rare opportunity to join a highly skilled and diverse security team committed to continuous growth and excellence in the field of offensive security. Key Responsibilities: Conduct hands-on Web Application Penetration Testing Support and contribute to Infrastructure and Cloud … Security Assessments Be mentored and trained towards Adversarial Simulation , Red Team Operations , and other advanced offensive security techniques Write detailed, clear, and professional reports for technical and non-technical stakeholders Collaborate with a team of skilled professionals and contribute to knowledge sharing Requirements: Minimum 6 months of practical penetration testing experience (freelance, consultancy, or internal testing roles … considered) OSCP certification is essential (OSEP, OSCE3, or other advanced Offensive Security certifications also accepted) Demonstrable knowledge of Web Application security , including common vulnerabilities (e.g., OWASP Top 10) Strong desire to deepen technical capabilities across various domains, including infrastructure, cloud, and red teaming Excellent written and verbal communication skills Full right to work in the UK (UK More ❯

our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. The Leidos National Security Sector (NSS) combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers … mission to defend against evolving threats around the world. Your greatest work is ahead! The Multi-domain Solutions Division (MDS) within the Leidos National Security Sector is seeking a skilled Principal Cyber Engineer to join a new cyber security program and play a key role in supporting government-critical systems. You will be part of a program that … oversees development, integration, delivery, and operations and maintenance of IT managed security services, which encompasses support to monitor the cybersecurity threat and security posture situational awareness for the enterprise. This opportunity is in anticipation of a future contract award! What you'll be doing: Lead the design, implementation, and management of advanced cybersecurity solutions that protect critical systems 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 ❯

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 ❯

our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. The Leidos National Security Sector (NSS) combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers … mission to defend against evolving threats around the world. Your greatest work is ahead! The Multi-domain Solutions Division (MDS) within the Leidos National Security Sector is seeking a skilled Cyber Engineer to join a new cyber security program and play a key role in supporting government-critical systems. You will be part of a program that oversees … development, integration, delivery, and operations and maintenance of IT managed security services, which encompasses support to monitor the cybersecurity threat and security posture situational awareness for the enterprise. This opportunity is in anticipation of a future contract award! What you'll be doing: Contribute to the design, implementation, and management of our cybersecurity infrastructure. Support security operations 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 ❯

our dynamic team and take charge of planning and executing red team engagements. In this 100% remote role, you'll collaborate with talented professionals to test and enhance our security processes, procedures, and controls, ensuring our enterprise is protected against advanced threats. Your expertise will be crucial in identifying vulnerabilities and developing cutting-edge solutions to safeguard our systems. … supporting processes for all red team activities, including standard operating procedures and playbooks. Research and experiment with new tools and methodologies to improve the Red Team's capabilities. Utilize security tools and C2 frameworks effectively. Ability to lead/plan/operate all phases of a red team engagement. Demonstrate a strong understanding of exploitation of Microsoft platforms used … enterprise environment such as Windows Server, Windows 10/11, Active Directory, Certificate Services, and Azure. Participate in quarterly purple team exercises, sharing insights and knowledge to improve overall security posture. Work cooperatively and professionally with co-workers, customers, and management on a daily basis, either remotely or in person. Provide mentorship for Red Team Operators I and II. More ❯

our dynamic team and take charge of planning and executing red team engagements. In this 100% remote role, you'll collaborate with talented professionals to test and enhance our security processes, procedures, and controls, ensuring our enterprise is protected against advanced threats. Your expertise will be crucial in identifying vulnerabilities and developing cutting-edge solutions to safeguard our systems. … supporting processes for all red team activities, including standard operating procedures and playbooks. Research and experiment with new tools and methodologies to improve the Red Team's capabilities. Utilize security tools and C2 frameworks effectively. Ability to lead/plan/operate all phases of a red team engagement. Demonstrate a strong understanding of exploitation of Microsoft platforms used … enterprise environment such as Windows Server, Windows 10/11, Active Directory, Certificate Services, and Azure. Participate in quarterly purple team exercises, sharing insights and knowledge to improve overall security posture. Work cooperatively and professionally with co-workers, customers, and management on a daily basis, either remotely or in person. Provide mentorship for Red Team Operators I and II. More ❯

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 training to 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 ❯

support our clients in achieving their strategic goals and empower our people to make an impact and develop their own unique career path. We are seeking an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you'll be delivering offensive security services including digital footprint reconnaissance, social engineering, penetration testing … and vulnerability assessments to high profile clients across all industries. The purpose of this role is to deliver our offensive security services including digital footprint reconnaissance, social engineering, vulnerability assessments, penetration testing, threat modelling, cyber-attack simulation exercises, and more to high profile clients across all industries. You'll benefit from ongoing coaching, career mentoring, and be supported … 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 in offensive security and penetration testing. Demonstrable experience in infrastructure and web application testing; experience in API testing is desirable. Demonstrable experience using common pentesting tools including Kali Linux, Burpsuite More ❯

CA. With offices in Washington DC and San Diego, CA, CTC is a leading technology company providing lifecycle IT, data analytics, cloud, agile software development, DevOps, Test Automation, Cyber Security, and infrastructure solutions. Additionally, we provide Professional Talent Acquisition Services as we proudly support the unique needs of U.S. Defense, Intelligence, and Federal Civilian agencies as well as Fortune … companies. What's in it for you ? Full time opportunity Competitive Salary Work for an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services Job Description : We are seeking a Senior Cyber Architect. … The qualified candidate will be working on and possibly leading security engineering teams supporting cybersecurity engineering activities in a rapid development environment to support the specification, development, and application of computer security technologies, cybersecurity and information assurance management techniques to DoD systems. Tasks may include : Leading systems engineering teams Leading Assessment and Authorization (A&A) activities for DoD More ❯

We're looking for a Pentester at Randstad "Offensive Security Specialist, with a focus on Red Teaming" your typical day includes As a pentester, your role will be to perform and lead the penetration testing on any of our global IT infrastructure. You are part of the Randstad Global Offensive Security Team in the global CISO … office. Together with 7 other Offensive Security Specialists, the team offers various security services to all Randstad countries and their IT landscape. They include a range of activities from traditional penetration testing (black/white box) to complex Red Teaming exercises, simulating real-world adversary tactics and techniques. We believe in an approach of working with developers … response teams (blue team) to improve detection and response capabilities based on Red Team findings. Provide detailed reports on Red Team activities, including recommendations for improving the organization's security posture. Analyze vulnerabilities and penetration test findings, propose remediation strategies and security requirements, help to mitigate security vulnerabilities at each layer. On a day-to-day basis More ❯

To: Head of Cyber Services Salary: £55,000 - £60,000 Travel: Occasional client site visits About Us We're a rapidly growing cybersecurity reseller and MSP delivering cutting-edge security solutions across network, endpoint, cloud, and offensive security testing. Our mission: empower clients to expose and eliminate critical vulnerabilities before attackers do. We're expanding our offensive security team and need an experienced Penetration Tester to deliver high-impact, real-world security assessments that drive tangible improvements. The Role - What You'll Own You will simulate sophisticated cyberattacks across client environments - from networks and web apps to cloud and endpoints - exposing weaknesses before adversaries can exploit them. Your findings will guide clients to stronger … more resilient security postures. Lead internal and external penetration tests , including infrastructure, web, wireless, cloud, and social engineering. Execute red team, purple team, and breach simulation exercises tailored to client maturity and objectives. Identify and safely exploit vulnerabilities to demonstrate real business impact . Deliver clear, actionable reports tailored to both technical teams and executives. Drive client engagement through More ❯

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. Make sure to apply with all the requested information, as laid out in the job overview below. 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 More ❯

Are you passionate about cloud security and leadership? Then join Vanguard's Cloud Security Assurance team and help to protect our rapidly expanding multi-cloud operations. As the Cloud Security Assurance Manager, you will implement a strategy to provide security guardrails and to continuously reduce Vanguard's cloud attack surface - while minimizing friction for thousands of … multi-cloud infrastructure. This is a great opportunity to join a growing team - working in a fast-paced cross-functional environment to protect Vanguard and its clients from cyber security threats Global Risk and Security (GR&S) at Vanguard enables business strategy, protects client and Vanguard interests (e.g., assets and data), and stewards a strong risk culture. Our … teams leverage enterprise-wide insights, deep expertise, and trusted advice so that across Vanguard leaders and crew drive faster, stronger, risk-informed decisions. Within GR&S, the Enterprise Security and Fraud (ES&F) sub-division is responsible for the global protection of Vanguard crew, property, data, and client assets. We are the trusted advisors that protect the pride of More ❯

We are looking for Pentester at Randstad "Junior Offensive Security Specialist" your typical day includes As a Junior Pentester, you will perform penetration tests on our global IT infrastructure. You'll have the opportunity, under guidance, to actively contribute to testing projects and take ownership of specific components. Every task is a learning opportunity to broadly develop your … skills and build a solid foundation in the field. You are part of the Randstad Global Offensive Security Team in the global CISO office. Together with 7 other Offensive Security Specialists, the team offers various security services to all Randstad countries and their IT landscape. They include a range of activities from traditional penetration testing … perform penetration tests on web applications, mobile applications, and network and infrastructure assessments. The focus will be on thoroughly learning each step and understanding its context within the broader security landscape. Strategies and security requirements On a day-to-day basis, you will work closely with application development and infrastructure teams to support and follow up on resolving More ❯

Are you a passionate security researcher with experience assessing large, complex software products? We are looking for talented individuals who are excited about security research and developing creative solutions for some of Oracle’s most critical customers. Finding and combining bugs to create new attacks is essential in this role. Who We Are We are a world-class … team of application security researchers who love new challenges. We are an inclusive and diverse, with a full range of experience and a global reach. We have the resources of a large enterprise and the energy of a start-up, and we’re working on a critical software assurance initiative with our cloud and mobile engineering teams. Our mission … is to make application security and software assurance a reality, at scale. We’re a dedicated team that leverages each other’s strengths to produce cutting-edge solutions to difficult problems. Join us to grow your career and create the future of software assurance at scale. Work You’ll Do As a member of our team, you will be More ❯

future for our shareholders. Join our team and discover why we are a top veteran employer and Certified Great Place to Work ASRC Federal is actively hiring a Cyber Security Assessor in support of our DCSA program based out of Hanover Maryland. This is primarily a Telework position with a requirement to be onsite up to one (1) day … life insurance; 401k; education assistance; paid time off including Paid Time Off, holidays and any other paid leave required by law. Job Description: ASRC Federal is seeking a Cyber Security Assessor, who will provide broad and in-depth knowledge to conduct offensive cyber operations across the organization. In this role, they will conduct offensive security operations … controls across the global technology landscape. You will use your expertise to help influence technology decisions and work as part of a team to create consistent approaches to the offensive security processes and techniques. Minimum Requirements: At least two (2) years of experience in penetration testing or related cyber security role. May accept experience from related roles More ❯

Security Consultant: Ready to ethically dismantle digital defenses and fortify the cybersecurity landscape? We're seeking a skilled Security Consultant to join our clients cyber team. If you're passionate about offensive security and thrive on tackling complex challenges, we want to hear from you. What You'll Be Doing: As a Security Consultant, you … systems , including Active Directory and Entra ID (Azure AD), along with various cloud-native services. Collaborating closely with remediation teams to provide expert guidance and support in fixing identified security flaws, ensuring practical and effective solutions are implemented. Contributing to the continuous improvement of our security tools and testing methodologies . You'll help shape the future of … our offensive security capabilities. Fostering a culture of collaboration and knowledge sharing within a supportive team environment, where continuous learning and professional growth are highly encouraged. What We're Looking For: We're searching for individuals who possess a strong foundation in offensive security and a proactive mindset. Ideal candidates will demonstrate: Proven hands-on experience More ❯

ESO's teams are growing, and our software is in demand globally by firefighters, paramedics, hospitals and governments. To meet this demand, we are building an industry-leading cyber security team in Belfast to protect our customers and data from a variety of fast moving and constantly evolving threats. We are looking for an Application Security Engineer to … These applications are used to help our customers go about their daily job of protecting their communities and saving lives. You will refine our application design and protection using offensive security techniques like design assessment, research, threat intelligence, threat modelling, and controls optimization. You will conduct security assessments of our applications, identify issues, and help address them … early in the development cycle. You'll also support developers in improving coding practices to enhance security and assist with remediating findings from security assessments. Our Security Engineering team operates autonomously within a motivated and forward-thinking Security team. Join our diverse, growing team, working on mission-critical products with training and mentoring support. Joining our More ❯