101 to 120 of 120 Offensive Security Jobs in the UK

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 ...

mindset and a passion for improving the tools, automation and processes used to investigate threats? As a Senior Detection & Response Engineer within our Cyber Security team, you’ll play a key role in strengthening Jagex’s detection and incident response capability across our studio and gaming environments. … take ownership of escalated security investigations, going beyond routine alert handling to understand what happened, determine impact, and drive an effective response. Alongside hands‐on investigation, you’ll develop the tooling, detection logic, automation, runbooks and processes that enable us to identify and respond to threats more effectively. Working ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

Client Server Ltd. in London is seeking a Red Team Operator to conduct approved adversary simulations, red team and breach engagements for a range of clients. You will scope objectives, plan and execute realistic operations ...

. 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. ...

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 ...

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 ...

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 ...

Cyrion AI is seeking an experienced offensive security engineer to design and extend the exploit-generation and validation pipeline behind our autonomous agent swarm. This hands-on role sits at the center of Cyrion’s offensive capability within a product team, not in isolation. You will design ...

Leonardo S.p.A. is seeking an experienced Red Team Consultant to join our Offensive Security capability in the UK. The role spans hands-on red team work, adversary emulation, and research to continuously improve tooling and methodologies. You will contribute to capability development, engage with customers, and shape service … offerings while maintaining focus on high-assurance environments and security-clearance readiness. #J-18808-Ljbffr ...

development and Apollo's blue-teaming research, so lessons learned externally harden our own product. JOB REQUIREMENTS Must-haves 2+ years of experience in offensive security, adversarial ML, or red-teaming of AI systems. Strong experience with AI coding agents, extensive use of, comparison of, or direct development … concepts, particularly agent-related risks Experience with LLM-as-a-judge setups or AI monitoring more broadly Background in penetration testing, CTFs, or computer security more broadly. We want to emphasize that people who feel they don't fulfill all of these characteristics but think they would ...

client is a global aerospace, defence and security company. Job Description: Your impact Our client is seeking an experienced Red Team Consultant to join our growing Offensive Security capability. This role is open to both Senior and Principal level Consultants. Working within a defence-focused environment … will deliver threat-led security assessments, adversary emulation activities and advanc click apply for full job details ...