76 to 100 of 104 Offensive Security Jobs in England

Penetration Tester

Location
Bath, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Nottingham, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Slough, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Bradford, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Birmingham, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Chester, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Guildford, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
Norwich, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Penetration Tester

Location
South Shields, England, United Kingdom
Security Consultant (Penetration Testing) Location: Hybrid (UK) Salary: Competitive + Benefits Security Clearance: Current SC preferred About Citation Cyber Citation Cyber is one of the UK's leading cyber security consultancies, delivering penetration testing, Cyber Essentials certification, consultancy, training and managed cyber security services to organisations … NCSC CHECK provider and CREST member company , we're continuing to grow our penetration testing team and are looking for a talented Security Consultant to join us. Whether you're already a CHECK Team Member (CTM) or you're an experienced penetration tester ready to take that next step ...

Red Team Engineer

Location
City Of London, England, United Kingdom
iProov provides science-based biometric solutions that enable the world’s most security-conscious organizations to streamline secure remote onboarding and authentication for digital and physical access. Our award-winning liveness technology and iSOC offer unmatched resilience against deepfakes and generative AI threats while ensuring effortless, scalable user experiences. … Trusted by leading governments and enterprises, including the U.S. Department of Homeland Security, U.K. Home Office, GovTech Singapore, ING, and UBS, iProov sets the standard in biometric identity assurance. This global trust is built not only on our technology but on the strength of the people behind it. ...

Application Security Engineer

Location
Manchester, England, United Kingdom
looking for a Application Security Engineer to join our Manchester-based application security business as a member of the AppSec Engineering team. Cytix is a platform that threat models development tickets and creates security testing plans that include both manual and automated testing. In this role … technical and non-technical nature to assist in vulnerability identification and remediations. Performing risk reviews of application changes as part of our continuous security testing process. You are comfortable collaborating with developers and external customers. What you'll bring 2+ years in Penetration Testing, Application Security Engineering ...

Security Research Engineer Offensive Research View role →

Location
Greater London, England, United Kingdom
Design and extend the exploit-generation and validation pipeline behind Cyrion’s autonomous agent swarm. You will sit at the center of Cyrion’s offensive capability — the research that decides what our agents are able to find, chain, and prove. This is a hands-on exploit-development role embedded … customers and the validation pipeline. Publish internal writeups and contribute to the public research blog. What we're looking for 4+ years in offensive security — pentesting, red teaming, or vulnerability research. Comfortable reading and writing exploit code (Python, Go, or similar) against real targets. Deep knowledge ...

Security Researcher

Location
City Of London, England, United Kingdom
product helps security teams quickly and accurately detect intrusions in their cloud environment using canaries - decoys deployed to deceive attackers. Our research has already made an impact: We've disclosed vulnerabilities in Google's Gemini CLI We work with some of the world's leading security teams … need someone to expand and formalize our research function, turning findings into actionable insights and engaging content while helping Tracebit contribute to the wider security community. Who we're looking for 5+ years in offensive security or vulnerability research with deep focus on cloud platforms (AWS, Azure ...

Penetration Tester — Hybrid London, Red Team Growth

Location
Greater London, England, United Kingdom
leading cybersecurity firm in London is seeking a passionate Penetration Tester to enhance their offensive security team. You will support cloud and infrastructure security assessments, write detailed reports for various stakeholders, and collaborate with a diverse team. Candidates must hold an OSCP certification and have knowledge … application security, alongside excellent communication skills. This hybrid position offers great opportunities for professional growth in cybersecurity. #J-18808-Ljbffr ...

Principal Cybersecurity Software Engineer

Location
Greater London, England, United Kingdom
global financial services organisation seeks a Principal Cybersecurity Engineer to help build the next generation of data-driven security capabilities at exceptional scale. This is a senior (Director grade) individual contributor position. The role requires a candidate with deep cyber expertise and elite hands-on software engineering ability … still wants to spend around 40-50% of their time coding. You will work on complex security challenges across threat detection, anomaly identification, cyber automation and advanced analytics, turning vast volumes of security telemetry into practical protection. The ideal candidate may come from a security product vendor ...

Junior Vulnerability Researcher - September 2027

Hiring Organisation
Hackajob Ltd
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent
client is a cyber security company. Our clients mission is to deliver high-end security research and bespoke solutions to some of the most interesting cyber security clients in the UK. In practice, this means that we have built a world-class team of vulnerability researchers, reverse … privilege escalation and keen to learn the dark arts of exploit development alongside our world-class research team. Our primary focus is conducting offensive security research against mobile operating systems and other embedded devices such as routers and CCTV cameras. Our research team use Ghidra as our tool ...

ICT Information Security Manager

Location
Stockton-on-Tees, England, United Kingdom
located on the river Tees with close access to walks, shops and restaurants. The Opportunity We are now recruiting for an ICT Information Security Manager our Head Office. This is an exciting opportunity to join the team as you will take responsibility for delivering a broad range … Information Security & compliance tasks, projects and activities within px. This may include working as part of a larger program of works ranging from the ICT Annual Delivery Plan to business growth initiatives such as site transitions/acquisitions in the UK and Abroad. In this role, you will serve ...

Senior Red Team Cyber Security Engineer

Location
West of England, England, United Kingdom
Immersive seeks an experienced Senior Cyber Security Engineer - Red Team to design and deliver engaging offensive security content within Immersive One. You will craft labs, games and scenarios, publish practical exercises, and shape the red team content roadmap. You’ll teach professionals to counter evolving threats ...

Senior Offensive Cybersecurity Consultant | Hybrid

Location
Greater London, England, United Kingdom
seeking an enthusiastic Cyber Security Consultant to join our growing consulting team. You will deliver offensive security services including digital footprint reconnaissance, social engineering, penetration testing and vulnerability assessments for high profile clients across all industries. You’ll benefit from coaching, career mentoring, and a structured career ...

Senior API Security Analyst - OAuth & JWT Expert (Remote)

Location
Greater London, England, United Kingdom
fast-growing technology firm in the UK is seeking a Senior Offensive Security Analyst to focus on API security and perform penetration testing on web applications. The ideal candidate will have deep expertise in OAuth, JWT, and a strong background in identifying security weaknesses. This fully ...

Infrastructure Engineer

Location
Greater London, England, United Kingdom
. IaC Expert: Professional mastery of Terraform or similar. CI/CD Veteran: Proven track record of building deployment pipelines that don't break. Security First: Deep understanding of IAM, cloud networking, and security best practices. Preferred & Nice-to-Haves: Experience with ECS, container orchestration, and distributed task … queues (Celery/SQS). Strong Python skills. Familiarity with the Datadog/Grafana observability stack. A background in offensive security, CTFs, or AI/ML infrastructure. What We Offer Competitive Salary + Significant Equity: We want you to have true ownership in the success of the company. ...

Senior Penetration Tester — Lead Web, API & Infra Assessments

Location
Greater London, England, United Kingdom
ongoing professional development through a dedicated annual training budget. Hybrid working with occasional travel to London office is expected. You will conduct high-quality offensive security testing, produce client-ready reports, support pre-sales, and #J-18808-Ljbffr ...

Senior Threat Intelligence Analyst

Location
Horsham, England, United Kingdom
insight that shapes the entire Cyber Defence strategy. Your intelligence will guide threat hunting, influence SOC detection priorities, support cyber improvement programmes, and ensure offensive security activities focus on realistic and relevant threats. You will help the wider business understand emerging risks to Intact, our customers ...

Red Team Lead - Adversary Simulation & Threat-Led Security

Location
West of England, England, United Kingdom
Copello Global is seeking an experienced Red Team/Offensive Security professional to join a growing capability within a major UK Defence organisation. This is more than a traditional penetration test role, focusing on adversary simulation, threat-led assessments, and building secure, high-assurance environments. You will work ...