101 to 125 of 131 Application Security Jobs in the UK

with shift and on-call work as required) Type : Contract (6 months+) | Rate : Market (Inside IR35) Start Date : 15 September 2025 Clearance : Must hold or be eligible for UK Security Clearance (5 years minimum UK residency) About the Role Our client, a leading global organisation, is seeking a Defender Administrator to play a key role in the migration of … endpoints from legacy antivirus platforms (Symantec, McAfee) to Microsoft Defender for Endpoint (ATP). You will oversee onboarding, configuration, and policy deployment across enterprise environments, ensuring robust endpoint security in line with best practices. This is a hands-on role requiring strong technical expertise in Microsoft Defender and Windows environments, with responsibilities spanning migration, monitoring, troubleshooting, and continuous security … Microsoft Defender and remove legacy AV solutions. Configure and manage Defender policies, exclusions, dashboards, and reporting. Deploy Defender ATP packages via GPO, SCCM, or Intune. Ensure best-practice endpoint security controls, including EDR, TVM, ASR, and AIR. Conduct threat analysis, hunting, and remediation activities across endpoints. Support and troubleshoot escalated issues across Windows clients and servers. Collaborate with EUC More ❯

Embedded Systems) Chinese/English bilingual Location: Edinburgh, Scotland (Office-Based) Experience Level: Entry to Mid-Level (1-3 years) Are you ready to shape the future of mobile security? Or innovative, award winning tech client is looking for a Software Engineer with a passion for embedded systems and mobile security. This is an exciting opportunity to work on … cutting-edge technology, researching how mobile apps interact with operating systems to enhance security solutions. If you're fluent in Chinese and English and love tackling complex security challenges, this role is for you! What You'll Be Doing: Security-Driven Development - Enhance and extend mobile app security solutions using system-level insights. Mobile OS Research … Dive into Android, iOS, and HarmonyOS Next to analyse system behaviours. Reverse Engineering & Security Testing - Utilise white hat techniques, including penetration testing and reverse engineering, to identify and address threats. Collaboration & Innovation - Work closely with the team in an office-based setting, contributing to design reviews and security improvements. What You Bring: Bilingual Skills: Fluent in Chinese & English More ❯

to strategies for managing technical debt, ensuring systems are secure, resilient, and reliable. Define and analyse test approaches to deliver the best possible customer experience, with a focus on security, usability, and accessibility. Conduct and participate in code reviews, considering functional and non-functional requirements such as performance, resiliency, maintainability, and security. Promote continuous improvement in team effectiveness and … culture, supporting changes that enhance productivity and happiness. Build a collaborative environment, coaching and mentoring less experienced engineers. Research emerging application technologies, identify opportunities to apply them, and share learnings across the team. Ensure all customers and stakeholders are treated fairly and with respect. What we're looking for Technology-focused degree preferred, or equivalent demonstrable experience. Extensive knowledge … microservices in Java (Spring Boot) Strong understanding of clean code principles, design patterns, distributed systems, software testing, CI/CD, and Agile methodologies (Scrum/Kanban). Knowledge of application security. Additional desirable skills: SQL, GraphQL, Maven Frontend performance optimisation API security and secure coding best practices Git release strategies Nice to have: Postgres, DynamoDB, Kubernetes, GitHub Actions More ❯

Important Banks (G-SIBs). Every sector of the global economy is being transformed by software, yet vulnerabilities are too often exposed by increasingly sophisticated cyber-attacks. By identifying security flaws in software architecture at the design phase, threat modeling makes it possible to fix issues before code is written. IriusRisk's platform automates the threat modeling process, enabling … culture, and we don't fear investing time to do things right the first time. Training and certifications related to your role. Requirements Knowledge of DevOps/SecDevOps/AppSec or similar industry. 7+ years of B2B SaaS customer success, account management, or consulting experience working with medium and large companies. Experience working with enterprise customers, with many moving parts … environment and drive change within an organization. Strong professional presence that instills confidence in the customer and a proven track record of leading customers. Desired Experience Experience working with security teams and knowledge of threat modeling would be an advantage. Experience : 10+ years of experience in customer success, account management, or related roles, with at least 5+ years managing More ❯

to strategies for managing technical debt, ensuring systems are secure, resilient, and reliable. Define and analyse test approaches to deliver the best possible customer experience, with a focus on security, usability, and accessibility. Conduct and participate in code reviews, considering functional and non-functional requirements such as performance, resiliency, maintainability, and security. Promote continuous improvement in team effectiveness and … culture, supporting changes that enhance productivity and happiness. Build a collaborative environment, coaching and mentoring less experienced engineers. Research emerging application technologies, identify opportunities to apply them, and share learnings across the team. Ensure all customers and stakeholders are treated fairly and with respect. What we're looking for Technology-focused degree preferred, or equivalent demonstrable experience. Extensive knowledge … microservices in Java (Spring Boot) Strong understanding of clean code principles, design patterns, distributed systems, software testing, CI/CD, and Agile methodologies (Scrum/Kanban). Knowledge of application security. Additional desirable skills: SQL, GraphQL, Maven Frontend performance optimisation API security and secure coding best practices Git release strategies Nice to have: Postgres, DynamoDB, Kubernetes, GitHub Actions More ❯

Windows 10 endpoints from Legacy antivirus solutions (Symantec, McAfee) to Microsoft Defender for Endpoint (ATP). This critical role requires hands-on expertise in deploying, configuring, and managing Defender security controls, as well as strong problem-solving skills to investigate threats, remediate incidents, and collaborate with cross-functional teams to ensure secure and compliant endpoint protection Key Responsibilities: Lead … dashboards, exclusions, and reporting to ensure secure and compliant endpoint protection. Monitor, investigate, and remediate threats using Defender EDR, Threat & Vulnerability Management, and automated remediation to resolve high-priority security issues. Collaborate with cross-functional teams and stakeholders to provide end-to-end Defender support, documentation, and continuous security improvement. What You Will Ideally Bring: SC Clearance (preferred … Proven expertise in Microsoft security technologies, including Defender for Endpoint, O365, Identity, and Cloud App Security, with hands-on experience onboarding and managing Windows 10 devices. Strong background in Legacy AV solutions (Symantec, McAfee) with the ability to plan and execute smooth migrations to Microsoft Defender. Deep knowledge of endpoint security operations, including EDR, Threat & Vulnerability Management More ❯

creating Automated Test Equipment. Preferably have experience using NI LabVIEW and/or TestStand. Preferably have experience in Boundary Scan and XJtag. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a … minimum and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role: For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have More ❯

you'll manage and optimise the environments our sites run on, working with solutions from Linux servers and LAMP stacks to Docker containers and cloud services such as AWS. Security, performance, and scalability will be part of your everyday thinking, as you configure servers, set up hosting platforms, and maintain smooth deployment pipelines. You'll also work with databases … APIs, build systems and CI workflows to keep projects running efficiently, applying best practices in technical SEO, accessibility, and application security. This is a hands-on role that combines creative front-end work with behind-the-scenes technical expertise, perfect for someone who enjoys variety and solving problems across the full digital stack. Key responsibilities Develop responsive, interactive websites … with modern web technologies Maintain and optimise servers, hosting platforms, and cloud services Translate prototypes and design systems into functional, polished products Apply best practices in security, performance, SEO, and accessibility What we're looking for Strong front-end skills (HTML/CSS/JS/TS, React/Preact) plus PHP/Node.js Experience with WordPress and modern More ❯

a Hiring Manager Q&A session where you can virtually 'meet the team' will be held via Teams on Thursday 18th of September at 12:30pm. Please follow the application link for intructins to join. Within this setting, the Lead Infrastructure Engineer will act as a key point of expertise and collaboration, supporting the End User Support Team and … Knowledge and/or experience of the Government Digital Service (GDS) Service Design Manual PowerBI - Tenant Administration/On Premise data gateway administration MS Defender - Awareness of Cloud App Security/Awareness of Defender for Office MS 365 CoPilot Windows server management Azure - Managing Azure Virtual Desktop/Managing Networking/Managing Storage Accounts/Managing Key Vaults HP … scheme (salary sacrifice). HMLR have a strong and positive culture, a commitment to inclusivity, an emphasis on continuous learning and development and flexible ways of working. Further information Application deadline - 11:55pm, Wednesday 24th September - please apply with a CV that has evidence against the 'Essential skills' listed above. HMLR does not hold a UK Visa & Immigration (UKVI More ❯

Deepen your expertise through code reviews, architecture discussions, and technical deep-dives. You'll own medium-sized features end-to-end while continuing to sharpen your skills in mobile security and crypto. Collaborate: Work closely with designers, product managers, and other engineers to translate user stories into delightful mobile features. Own Features: Take full responsibility for feature development-planning … skills and enjoyment of working in diverse, distributed teams Nice-to-Haves Experience mentoring or pairing with junior engineers Personal interest in crypto or fintech Knowledge of advanced app-security or cryptography concepts Familiarity with automated UI-testing frameworks (Maestro) An app or project in the App Store or on GitHub you can demo Exposure to performance profiling and … subject to appropriate additional safeguards under the standard contractual clauses. Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment. Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request More ❯

Senior Offensive Security Consultant | Remote (UK) | CHECK Team Member 🚨 We’re looking for a Senior Offensive Consultant (Penetration Tester) who lives and breathes hacking. You’ll have hands-on CHECK experience, ideally leading technical teams, and a passion for breaking things in the name of security. What You’ll Do: Deliver high-impact penetration tests & red-team engagements Mentor … junior penetration testers & peer review reports Engage with top-tier government & commercial clients Shape business strategy and contribute to proposals Share knowledge, grow your offensive security/penetration testing skills, and be part of something exciting What We’re Looking For: Proven experience in UK cyber security (CHECK, CREST, NCSC frameworks) Strong tech chops across networks, systems, and … app security Excellent communicator who thrives in client-facing roles SC clearance eligible (DV a bonus)/(OSCP bonus) Bonus Points For: R&D or threat intel experience Application testing or ISO17025 environments That hacker mindset we all love We care about passion and skill, not paper. No degree? No problem. Join us to work on some of More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

delivery; key skills required include: Proven experience working within software processes in high-reliability, safety-critical, or regulated sectors. Solid understanding of the full Software Engineering Lifecycle and its application across multiple programmes. Familiarity with project management principles and the ability to support delivery milestones. Providing configuration management and software input to ensure consistency and traceability. Supporting a variety … test engineers and lab custodians to ensure smooth integration. Assisting in the delivery of integration artefacts and supporting documentation for project handovers. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a More ❯

Poland, at short or reasonable notice to support service operations. Contribute to continuous service improvement initiatives, ensuring agility, efficiency, and customer satisfaction. What happens now?Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance:British Citizen or a Dual UK national with British citizenshipRestrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum … and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role:For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have provided More ❯

Poland, at short or reasonable notice to support service operations. Contribute to continuous service improvement initiatives, ensuring agility, efficiency, and customer satisfaction. What happens now?Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance:British Citizen or a Dual UK national with British citizenshipRestrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum … and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role:For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have provided More ❯

Poland, at short or reasonable notice to support service operations. Contribute to continuous service improvement initiatives, ensuring agility, efficiency, and customer satisfaction. What happens now?Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance:British Citizen or a Dual UK national with British citizenshipRestrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum … and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role:For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have provided More ❯

Poland, at short or reasonable notice to support service operations. Contribute to continuous service improvement initiatives, ensuring agility, efficiency, and customer satisfaction. What happens now?Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance:British Citizen or a Dual UK national with British citizenshipRestrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum … and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role:For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have provided More ❯

for driving team alignment and delivering high-quality outcomes. Meticulous in documenting and configuring designs to meet rigorous engineering and compliance standards. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance : British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a … minimum and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role: For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have More ❯

Poland, at short or reasonable notice to support service operations. Contribute to continuous service improvement initiatives, ensuring agility, efficiency, and customer satisfaction. What happens now? Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance: British Citizen or a Dual UK national with British citizenship Restrictions and/or limitations relating to nationality and/or rights to work may apply. As a … minimum and after offer stage, all successful candidates will need to undergo HMG Basic Personnel Security Standard checks (BPSS), which are managed by our clients Security Team. More about the role: For more than 70 years, our client has been in a strong partnership with the UK military. They have accomplished numerous milestones in defence engineering and have More ❯

client requires an individual with an inquisitive nature who can effectively investigate issues and discuss solutions with their customers. The products necessitate Linux Operating System (OS) configuration, support, and security solution maintenance. Therefore, experience with Linux is essential for this position. This role offers the opportunity to work across multiple applications on both land and maritime projects within the … technical stakeholders is an essential skill. Comfortable working within a team in a collaborative environment, communicating and contributing to resolve emerging issues. What happens now?Upon submission of your application, should it meet our selection criteria, you will be contacted via e-mail by one of our talent acquisition specialists to arrange a screening call. This telephone chat is … of questions aimed at matching your competencies and capabilities to the specific demands of the position. Please note, this screening is contingent upon the initial success of your application. Security Clearance:British Citizen or a Dual UK national with British citizenshipRestrictions and/or limitations relating to nationality and/or rights to work may apply. As a minimum More ❯