982 Security Testing jobs in the United Kingdom

• Conduct comprehensive penetration tests on web applications, networks, mobile applications, and cloud environments.
• Identify, analyze, and document security vulnerabilities and their potential impact.
• Develop detailed reports outlining findings, risks, and actionable recommendations for remediation.
• Collaborate with IT and development teams to ensure timely and effective implementation of security fixes.
• Perform vulnerability assessments and security audits to identify weaknesses in systems and processes.
• Stay up-to-date with the latest threat intelligence, attack vectors, and security technologies.
• Develop and maintain security testing methodologies and tools.
• Assist in the development and implementation of security policies and procedures.
• Participate in incident response activities when required.
• Provide security awareness training and guidance to internal staff.

• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field.
• Minimum of 5 years of experience in information security, with a strong focus on penetration testing and vulnerability assessment.
• Proven experience with penetration testing tools (e.g., Metasploit, Burp Suite, Nmap, Wireshark).
• Strong understanding of common web application vulnerabilities (e.g., OWASP Top 10) and network security principles.
• Experience with scripting languages (e.g., Python, Bash) for security automation.
• Relevant security certifications such as OSCP, CISSP, CEH, or GPEN are highly desirable.
• Excellent analytical, problem-solving, and critical thinking skills.
• Strong communication and report-writing skills.
• Ability to work effectively in a hybrid team environment and collaborate with various stakeholders.
• Must be legally authorized to work in the UK and able to work on-site in **Portsmouth, Hampshire, UK**, with flexibility for remote work.

• Plan, execute, and report on penetration tests of networks, applications, and systems.
• Identify and exploit security vulnerabilities using ethical hacking techniques.
• Conduct vulnerability assessments and security audits.
• Develop detailed remediation plans and provide expert recommendations.
• Collaborate with IT and development teams to implement security controls.
• Perform security code reviews and threat modeling.
• Stay updated on the latest cybersecurity threats, trends, and technologies.
• Develop and maintain security documentation and procedures.
• Assist in security incident response activities.
• Contribute to the continuous improvement of the security program.

• Bachelor's degree in Computer Science, Information Security, or a related field.
• Minimum of 5 years of experience in information security, with a focus on penetration testing.
• Proven experience with penetration testing tools and methodologies.
• Strong understanding of network protocols, operating systems, and web application security.
• Relevant certifications (e.g., OSCP, CEH, CISSP) are highly desirable.
• Excellent analytical, problem-solving, and critical thinking skills.
• Strong written and verbal communication skills.
• Ability to work independently and as part of a team.
• Experience with scripting languages (e.g., Python, Bash) is a plus.

Location: Belfast Hybrid (2 days in office / client site as required)

Type: Full-time | Flexible working hours | Hybrid

Applicants must be a UK or Irish citizen (or hold an equivalent status eligible for full UK security clearance) with 5 years of continuous UK address history.

Applicants will ideally be based in Northern Ireland (or can commute or relocate) to meet hybrid work and client site requirements. Sponsorship is not available.

Who we are:

Cyber Guarded Ltd is a long-established and independent cyber security company based in Belfast. As the premier NCSC-approved supplier for CHECK Penetration Testing in Northern Ireland, including Cyber Incident Exercising being conducted at the highest levels, along with Cyber Advisor - Cyber Essentials, we support clients across both public and private sectors.

As we continue to grow significantly, securing significant contracts across Northern Ireland, we’re strengthening our technical team to meet demand. We are seeking skilled Penetration Testers who are either already Cyber Scheme Team Member (CSTM) or CREST Registered Penetration Tester (CRT) or have the technical ability and motivation to gain the above qualifications in the near future to achieve NCSC CHECK Penetration Testing status.

What You’ll Do:

• Perform infrastructure, web, cloud, and OT penetration testing
• Produce clear, actionable reports and remediation advice
• Engage with clients through the full testing lifecycle
• Contribute to tooling, methodology, and internal R&D

What We’re Looking For:

• Hands-on experience in professional penetration testing
• Either: Already hold CHECK Team Member or CHECK Lead status, or Have the technical depth and readiness to pursue the CSTM exam soon
• Hold a UKCSC Professional Registration Title of Practitioner, Principal or Chartered in the Security Testing Specialism.
• Strong working knowledge of networks, Linux/Windows, and web technologies
• Experience with tools such as Burp Suite, Metasploit, Kali Linux, and Nessus
• Excellent problem-solving, communication, and reporting skills

What We Offer

• Hybrid working – home-based with 2 days per week in our Belfast office or based on client site as needed for the duration of a penetration testing engagement.
• Flexible hours and a supportive, down-to-earth team culture.
• Monthly team lunches and quarterly team days out
• Comprehensive pension and sick pay
• 23 Leave days and 10 statutory public holidays each year
• Private Healthcare
• Annual Specsavers optical vouchers
• Exposure to a wide range of sectors, clients and technical environments.
• Ongoing support for professional development and certifications.
• Salary: up to £70,000 depending on experience and qualifications.

If you're looking to join a growing team delivering meaningful work across critical industries and want to make an impact without the bureaucracy, we’d love to hear from you.

Please note: only shortlisted applicants will be contacted.

Role Title: Security Engineer
Start Date: ASAP
End Date: 31st Mar 2026
Location: South of Manchester or Glasgow - 3 days on site per week
Rate: 600 per day - PAYE via Umbrella Only

Role Overview:
We are seeking a highly capable Security Engineer to join a focused team developing a telemetry pipeline MVP. This role requires deep technical expertise in containerised environments, observability tooling, and secure infrastructure design. The ideal candidate will ensure that security is embedded across the pipeline architecture, from deployment to data flow, while collaborating closely with DevOps and development teams.

Key Responsibilities:

• Design and implement security controls across containerised environments using Kubernetes and OpenShift
• Ensure secure configuration and access management within GitLab version control and CI/CD pipelines
• Integrate and secure telemetry tools including Cribl, Elastic, Splunk, Fluentd, and Syslog
• Conduct threat modelling, vulnerability assessments, and risk analysis for the telemetry pipeline
• Collaborate with DevOps engineers to embed security into infrastructure-as-code and deployment workflows
• Monitor and respond to security events and alerts from observability platforms
• Maintain documentation of security architecture, policies, and incident response procedures

Required Skills & Experience:

• Strong hands-on experience with Kubernetes and OpenShift in secure production environments
• Proficiency in GitLab and secure CI/CD pipeline practices
• Familiarity with telemetry and logging tools: Cribl, Elastic, Splunk, Fluentd, and Syslog
• Deep understanding of networking protocols, firewalls, VPNs, and security principles
• Experience with security frameworks (e.g., NIST, ISO 27001) and compliance requirements
• Knowledge of container security tools (e.g., Aqua, Twistlock, Trivy) and vulnerability scanners
• Excellent analytical and communication skills

Preferred Qualifications:

• Certifications such as CISSP, CISM, CKS (Certified Kubernetes Security Specialist), or equivalent
• Experience in building MVPs or working in startup-like environments
• Familiarity with cloud security (AWS, Azure, GCP)

• 8+ years of experience as a Security Engineer or in a similar role within a banking or financial services environment .
li>Strong knowledge of network security, cloud security (AWS/Azure/GCP), encryption, IAM, endpoint protection, and SIEM solutions .
• Hands-on experience with tools such as Splunk, CrowdStrike, Qualys, Nessus, Palo Alto, Fortinet, or similar .
• Solid understanding of security frameworks and standards: NIST, CIS Controls, ISO 27001 , and compliance mandates relevant to banking.
• Familiarity with secure coding practices and DevSecOps pipelines.
• Experience with incident response, security monitoring, and digital forensics.

An opportunity has arisen for a Security Engineer to join a respected UK-based security solutions provider, offering integrated systems for commercial and industrial clients.

As a Security Engineer , you will providing support to the Security Engineering Manager in daily operations. This full-time role offers salary range of £35,000 - £45,000 and benefits.

You must be willing to travel and cover Midlands, London and Cotswolds areas. They will consider both junior and senior level candiates.

You will be responsible for:

• Installing, servicing, and maintaining intruder alarms, CCTV, and access control systems.
• Leading site-based projects, ensuring timely delivery and high standards.
• Carrying out routine and reactive maintenance visits.
• Commissioning systems and handing over to clients.
• Completing all documentation accurately, including job reports and compliance certificates.
• Ensuring installations meet SSAIB, NSI, and all relevant industry standards.
• Maintaining van stock, tools, and equipment in good working order.
• Assisting in team training and quality improvement through regular feedback and reporting.
• Attending internal meetings, toolbox talks, and HSE briefings.

What we are looking for:

• Previously worked as an Security Engineer, Alarm Engineer, Access Control engineer, Security Systems Engineer, CCTV Engineer, Security Installations Engineer, Fire and Security Engineer, Intruder Alarm Engineer or in a similar role.
• Possess at least 2 years experience.
• Experience installing and maintaining intruder alarm systems.
• Understanding of British Standards for intruder alarms (BS EN 50131, PD6662).
• Competent with IP-based CCTV setups, remote access, NVRs, and networking configurations.
• Skilled in fault finding and repair of integrated security systems.
• Ability to interpret technical drawings, wiring diagrams, and site plans
• Knowledge of GDPR compliance and relevant health and safety legislation.
• Full UK driving licence (maximum 6 points).

What’s on offer:

• Competitive salary
• 25 days’ holiday plus bank holidays
• Mental health support line
• Discounts on dental, optical, and physiotherapy services
• Retail and lifestyle discounts
• Casual and professional working environment
• Comprehensive Employee Assistance Programme
• Opportunities for further training and career development

Apply now for this fantastic opportunity to step into a senior role within a progressive, fast-moving security engineering environment.

Important Information: We endeavour to process your personal data in a fair and transparent manner. In applying for this role, Additional Resources will be acting in your best interest and may contact you in relation to the role, either by email, phone or text message. For more information see our Privacy Policy on our website. It is important you are aware of your individual rights and the provisions the company has put in place to protect your data. If you would like further information on the policy or GDPR please contact us.

Additional Resources Ltd is an Employment Business and an Employment Agency as defined within The Conduct of Employment Agencies & Employment Businesses Regulations 2003.

Are you a skilled Intruder Alarm Engineer looking for your next challenge? Join a growing and reputable security solutions provider delivering high-quality installations and maintenance across the Midlands.

Key Responsibilities:

• Install, service, and maintain intruder alarm systems to NSI standards
• Diagnose faults and carry out repairs efficiently
• Conduct routine maintenance and system upgrades
• Liaise with clients to ensure excellent customer service
• Complete accurate documentation and reports

Requirements:

• Proven experience with intruder alarm systems (wired and wireless)
• Familiarity with leading brands such as Texecom, Honeywell, Pyronix, or Scantronic
• Full UK driving licence
• Strong problem-solving skills and attention to detail
• Ability to work independently and manage time effectively

Desirable:

• Experience with CCTV and access control systems
• Relevant industry qualifications (e.g., FIA, BTEC, or manufacturer training)

What We Offer:

• Salary of 36,000 with overtime opportunities
• Company van, tools, and uniform
• Ongoing training and career development
• Supportive team environment
• Paid travel time and generous holiday allowance

If you're passionate about security technology and want to be part of a forward-thinking team, we would love to hear from you.

An opportunity has arisen for a Security Engineer to join a respected UK-based security solutions provider, offering integrated systems for commercial and industrial clients.

As a Security Engineer , you will providing support to the Security Engineering Manager in daily operations. This full-time role offers salary range of £35,000 - £45,000 and benefits.

You must be willing to travel and cover Midlands, London and Cotswolds areas. They will consider both junior and senior level candiates.

You will be responsible for:

• Installing, servicing, and maintaining intruder alarms, CCTV, and access control systems.
• Leading site-based projects, ensuring timely delivery and high standards.
• Carrying out routine and reactive maintenance visits.
• Commissioning systems and handing over to clients.
• Completing all documentation accurately, including job reports and compliance certificates.
• Ensuring installations meet SSAIB, NSI, and all relevant industry standards.
• Maintaining van stock, tools, and equipment in good working order.
• Assisting in team training and quality improvement through regular feedback and reporting.
• Attending internal meetings, toolbox talks, and HSE briefings.

What we are looking for:

• Previously worked as an Security Engineer, Alarm Engineer, Access Control engineer, Security Systems Engineer, CCTV Engineer, Security Installations Engineer, Fire and Security Engineer, Intruder Alarm Engineer or in a similar role.
• Possess at least 2 years experience.
• Experience installing and maintaining intruder alarm systems.
• Understanding of British Standards for intruder alarms (BS EN 50131, PD6662).
• Competent with IP-based CCTV setups, remote access, NVRs, and networking configurations.
• Skilled in fault finding and repair of integrated security systems.
• Ability to interpret technical drawings, wiring diagrams, and site plans
• Knowledge of GDPR compliance and relevant health and safety legislation.
• Full UK driving licence (maximum 6 points).

What’s on offer:

• Competitive salary
• 25 days’ holiday plus bank holidays
• Mental health support line
• Discounts on dental, optical, and physiotherapy services
• Retail and lifestyle discounts
• Casual and professional working environment
• Comprehensive Employee Assistance Programme
• Opportunities for further training and career development

Apply now for this fantastic opportunity to step into a senior role within a progressive, fast-moving security engineering environment.

Important Information: We endeavour to process your personal data in a fair and transparent manner. In applying for this role, Additional Resources will be acting in your best interest and may contact you in relation to the role, either by email, phone or text message. For more information see our Privacy Policy on our website. It is important you are aware of your individual rights and the provisions the company has put in place to protect your data. If you would like further information on the policy or GDPR please contact us.

Additional Resources Ltd is an Employment Business and an Employment Agency as defined within The Conduct of Employment Agencies & Employment Businesses Regulations 2003.

Our team of hundreds of skilled experts keep Formula 1 moving. We’re on the lookout for a Security Engineer. Reporting to the Cyber Security Manager, the main purpose of this role is to support the development and management of security technologies across F1’s growing technology landscape.

Main Duties & Responsibilities:

• Assess and maintain high standards of security maturity across Formula 1’s cloud infrastructure
li>Focus on new and existing infrastructure, managing technical vulnerabilities, support continued system maintenance, and minimise technical debt
• Ensure visibility and reporting of Cloud infrastructure against Formula 1’s compliance and security standards (such as ISO 27001 and CIS)
< i>Main duties to be carried out include, but not limited to:
• Vulnerability Management and reporting across Formula 1’s cloud environment(s), including:
< i>Development of requirements, design, and implementation of cloud security tools (E.g. compliance and host security)
• A key focus on threat detection and risks across cloud environments
• Identification, remediation, and reporting of security vulnerabilities
• Reporting on compliance to F1’s security standards
< i>Support in the delivery and management of security design and architecture reviews
• Working closely with Infrastructure teams on security design and control strategies to reduce risks
• The definition and operation of secure development / operations (DevOps) practices, inc. code scanning, Kubernetes, container security.
• System and device hardening policies and reporting
• Technology focused threat assessments to identify threats/risks
• Documentation of security requirements, patterns, and processes
• Liaising closely with Formula 1’s cyber security, infrastructure, and digital teams on new and existing initiatives.

About You:

< i>Extensive hands-on experience with AWS cloud infrastructure – inc. AWS Security Services (CloudTrail, Guard Duty, WAF, IAM, Security Hub etc.) < i>Knowledge of CI/CD including DevSecOps patterns and principles
• Infrastructure as code experience utilising Terraform
• Knowledge of container technologies
• Extensive experience with AWS Security Services & Governance and Information Security Best Practices
• Experience with other enterprise cloud platforms e.g. Azure
• Kubernetes experience
• Identity & Access Management deployment and administration (e.g. Okta, Entra ID)
• Web application security technologies – WAF, Bot Protection, DDOS Protection, etc.
< i>Adaptable, passionate and a team-player

Division:

Technical