51 to 57 of 57 Offensive Security Jobs in London

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 ...

Exploit-Generation Security Research Engineer

Location
Greater London, England, United Kingdom
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 ...

AI Red Team Engineer

Location
Greater London, England, United Kingdom
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 ...