126 to 150 of 168 Permanent Offensive Security Jobs

CHECK Pen Tester , CSTM

Hiring Organisation
BreachLock, Inc
Location
Newcastle upon Tyne, UK
Employment Type
Full-time
Penetration Testing. Our AI-enhanced PTaaS and Adversarial Exposure Validation platforms deliver evidence-based risk insights for enterprises worldwide. We are expanding our UK offensive security team and hiring a CHECK-certified Penetration Tester to support our growing portfolio of government and enterprise clients. Eligibility Requirement (Important … manual, high-depth testing and advanced exploitation aligned with industry standards (OWASP, NCSC, CREST). Support adversarial validation engagements, collaborating with internal and client security teams. Produce clear, actionable reports and present findings to technical and executive stakeholders. What You Bring Valid CHECK certification (e.g., CRT or equivalent). ...

CHECK Pen Tester , CSTM

Hiring Organisation
BreachLock, Inc
Location
York, North Yorkshire, UK
Employment Type
Full-time
Penetration Testing. Our AI-enhanced PTaaS and Adversarial Exposure Validation platforms deliver evidence-based risk insights for enterprises worldwide. We are expanding our UK offensive security team and hiring a CHECK-certified Penetration Tester to support our growing portfolio of government and enterprise clients. Eligibility Requirement (Important … manual, high-depth testing and advanced exploitation aligned with industry standards (OWASP, NCSC, CREST). Support adversarial validation engagements, collaborating with internal and client security teams. Produce clear, actionable reports and present findings to technical and executive stakeholders. What You Bring Valid CHECK certification (e.g., CRT or equivalent). ...

CHECK Pen Tester , CSTM

Hiring Organisation
BreachLock, Inc
Location
Brighton, East Sussex, UK
Employment Type
Full-time
Penetration Testing. Our AI-enhanced PTaaS and Adversarial Exposure Validation platforms deliver evidence-based risk insights for enterprises worldwide. We are expanding our UK offensive security team and hiring a CHECK-certified Penetration Tester to support our growing portfolio of government and enterprise clients. Eligibility Requirement (Important … manual, high-depth testing and advanced exploitation aligned with industry standards (OWASP, NCSC, CREST). Support adversarial validation engagements, collaborating with internal and client security teams. Produce clear, actionable reports and present findings to technical and executive stakeholders. What You Bring Valid CHECK certification (e.g., CRT or equivalent). ...

Penetration Tester (CHECK)

Hiring Organisation
Computer Network Defence Ltd (CND)
Location
Gloucester, Gloucestershire, UK
Employment Type
Full-time
Location: Cheltenham/Remote Job Type: Permanent Clearance: SC/DV Are you an offensive security specialist who is excited about delivering the best service possible? Keen to work in a business where you stand to work alongside some very talented testers? CND are working with a boutique … Cyber Security consultancy who are focused on the Penetration Testing market. What makes them stand out? They are not interested in flashy marketing and would never be caught trying to pass off a Nessus scan as a Penetration Test. The business has been built on delivering excellent testing ...

Penetration Tester (CHECK)

Hiring Organisation
Computer Network Defence Ltd (CND)
Location
Cheltenham, England, United Kingdom
Location: Cheltenham/Remote Job Type: Permanent Clearance: SC/DV Are you an offensive security specialist who is excited about delivering the best service possible? Keen to work in a business where you stand to work alongside some very talented testers? CND are working with a boutique … Cyber Security consultancy who are focused on the Penetration Testing market. What makes them stand out? They are not interested in flashy marketing and would never be caught trying to pass off a Nessus scan as a Penetration Test. The business has been built on delivering excellent testing ...

Security Architect (Stockton-On-Tees)

Hiring Organisation
Razorblue Group Ltd
Location
London, England, United Kingdom
Durham, North East, UKWe are looking for aSecurity Architectto join our growing team of like-minded tech people.Reporting to the Enterprise Solution Architect, the Security Architect is a senior member of the Solution Design team, responsible for shaping, designing, and governing secure IT solutions across razorblues client base. This … role combines deep technical expertise with commercial awareness and excellent customer engagement skills.Youll work closely with the Solution Architect team, Security, and Consulting teams to ensure all proposed solutions are secure, compliant, and aligned with best practice. Youll support pre-sales engagements, contribute to architectural design ...

IoT/IIoT Cybersecurity Engineer

Hiring Organisation
TUV SUD Limited
Location
Nationwide, United Kingdom
Employment Type
Permanent
development of an evolving and dynamic cyber assessment service. Main Duties & Responsibilities: Perform assessments to the latest cybersecurity regulations, standards and guidelines Perform security reviews and testing of IOT hardware devices, including application design, embedded software, web applications, web services and mobile applications to bespoke test programs … their products and assessment requirements, and define bespoke test programs based upon our customer needs Actively contribute to the development of the TUV SUD security program with a focus on IIoT/IoT devices. Participate and contribute on global cybersecurity regulatory standards committees Provide training to customers ...

Global Head of Platforms (DevOps)

Hiring Organisation
XACT PLACEMENTS LIMITED
Location
London, United Kingdom
Employment Type
Permanent
speed, change failure rates, and time-to-recovery across all services. Own cloud and infrastructure strategy across AWS/Azure with a focus on security, performance, cost, and global regulatory requirements. Partner with Product, Security, and Engineering to deliver secure, reliable, and scalable capabilities. Define and evolve platform … just individual contributors. Proven success scaling high-throughput distributed systems in production. Strong background in early-stage B2B SaaS (ideally cybersecurity, threat intelligence, or offensive security tools). Deep technical expertise across: Cloud: AWS, Azure IaC: Terraform, Ansible Platforms: Kubernetes (EKS), ECS, Docker, Lambda, Airflow Observability: EFK, Prometheus ...

Senior Full Stack Engineer

Hiring Organisation
Sanderson Recruitment
Location
United Kingdom
Employment Type
Permanent
Salary
£85,000
work within a high-energy, research-driven engineering function focused on delivering innovative, impactful features used by some of the world's most advanced security teams. About the Role As a Senior Full Stack Engineer, you'll design, build, and maintain high-quality features across backend and frontend systems. … Experience Ideally, you will bring 5+ years of full-stack development experience , including: Experience building enterprise SaaS products, ideally within cybersecurity (Threat Intelligence or Offensive Security a plus). Strong backend engineering skills with TypeScript and NestJS (REST, GraphQL, Sequelize). Frontend expertise with React, Next.js, TypeScript, Chakra ...

Remote Senior Full Stack Engineer

Hiring Organisation
Xact Placements Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
just another engineering role. It’s your chance to build technology that protects enterprises from real-world attacks while shaping the future of offensive security at scale. Interested? Apply now — this one won’t stay open for long. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Coventry, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Belfast, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Leicester, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Sheffield, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Liverpool, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Leeds, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Birmingham, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Bristol, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Manchester, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
London, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Midlands, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Chester, Cheshire, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Chelmsford, Essex, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Gloucester, Gloucestershire, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...

Penetration Tester

Hiring Organisation
Digital Waffle
Location
Portsmouth, Hampshire, UK
Employment Type
Full-time
Title: Penetration Tester (CHECK Team Member) Location: UK (Hybrid/Remote) Experience: 1–3 years Eligibility: UK National (must be eligible for security clearance) About the Role: We're looking for a Penetration Tester (CHECK Team Member) to join our growing cybersecurity team. You'll conduct network … application security testing for a range of clients, helping identify vulnerabilities and strengthen defences. Key Responsibilities Deliver high-quality penetration tests and vulnerability assessments. Produce clear, actionable reports and remediation guidance. Support CHECK-accredited engagements and collaborate with senior testers. Stay current with new exploits, tools, and testing techniques. ...