Latest Application Security Engineer Jobs

CrowdStrike logo

Sr. Security Researcher

This role involves conducting advanced security research, including vulnerability discovery, reverse engineering, and adversary TTP analysis. You'll develop automated tools for large-scale data collection, operate honeypots, and publish findings through blogs or conferences. The position emphasizes AI-driven research, collaboration across teams, and rapid response to emerging threats using an AI-first approach.

CrowdStrike logo

Sr. SDET - Cloud, Detection Engineer , London)

Design and build scalable cloud detection systems that process billions of events to identify sophisticated threats across multi-cloud environments. Work at the intersection of distributed systems, data engineering, and security analytics, implementing custom query languages, event orchestration, and advanced correlation engines. Collaborate with security researchers to turn expertise into production-grade detection capabilities with low latency and high reliability.

CrowdStrike London, United Kingdom
Hybrid Permanent
Entrust logo

Senior Software Test Engineer

This role involves leading test engineering efforts within a cross-functional product team, focusing on frontend, backend, and mobile testing powered by microservices and machine learning. The engineer will design and develop automated test frameworks using open-source and custom tools, advocate for quality practices, and mentor team members in continuous improvement of delivery pipelines. Work combines automation with exploratory testing and spans web, mobile, and API layers in a cloud-native environment.

Entrust London, United Kingdom
Entrust logo

Senior Software Test Engineer

This role involves leading test engineering efforts within a cross-functional product team, focusing on end-to-end quality ownership for web, backend, and mobile applications built on microservices and machine learning. The engineer will design and develop automated test frameworks using modern tools, integrate testing into CI/CD pipelines, and mentor team members in quality best practices. The position emphasizes a strong blend of technical automation, exploratory testing, and cross-team collaboration in a flexible, global environment.

Entrust Portugal

Cloud Systems Architect

Design and deliver scalable, secure cloud solutions across Azure, AWS, and hybrid environments, providing technical leadership throughout the delivery lifecycle. Lead architecture workshops, shape cloud strategies, and support engineering teams with infrastructure automation and CI/CD practices. Work across multiple client accounts in a collaborative, multidisciplinary environment focused on innovation and digital transformation.

BIOMETRIC TALENT Covent Garden, London, WC2E 8RE, United Kingdom £100,000 – £120,000 pa

Senior IT Systems Administrator

This role involves managing TwinStream's corporate IT systems, ensuring security, reliability, and performance. Responsibilities include administering Microsoft 365, managing corporate networks, implementing automation, and leading incident resolution. The role offers hands-on technical challenges and the opportunity to mentor colleagues.

Twinstream Limited Bristol, United Kingdom £50,000 – £60,000 pa
Hybrid Permanent Clearance Required

Technical Consultant

The role involves scoping, designing, and delivering Microsoft Azure solutions, including IaaS, networking, hybrid integration, and security. Responsibilities include running workshops, producing documentation, and mentoring junior engineers.

Recruitvirt Ltd Greenwich, United Kingdom £65,000 – £75,000 pa

Product Manager - Solutions and Implementations Lead

This role involves owning and developing the integration roadmap for a payments technology company, connecting their platform with EPOS, ticketing, hospitality, and eCommerce systems. Responsibilities include managing the integration lifecycle, collaborating with engineering and external partners, and ensuring secure and scalable solutions.

Robert Walters Gloucestershire, United Kingdom

Azure Cloud Engineer

This role involves designing, building, and optimising Microsoft Azure cloud infrastructure, supporting CI/CD pipelines, and advising on cloud architecture and best practices. You'll work across internal platforms and client-facing transformation projects in a cloud-native environment, collaborating with technical and non-technical stakeholders. The position offers hands-on ownership of real Azure environments while contributing to large-scale cloud and AI initiatives.

Harnham - Data and Analytics Recruitment Abingdon, OX14 5BH, United Kingdom £40,000 – £50,000 pa

Systems Administrator \ Support Engineer

Provide multilevel technical support to business customers, including troubleshooting desktop, server, and network issues. Commission and maintain IT infrastructure, manage Microsoft 365 and Azure AD environments, and ensure high customer service standards. Work on-site in Sidmouth within a small, friendly team.

Profile 29 Ex109Hl, United Kingdom £27,000 – £30,000 pa

Internal Penetration Tester

This role involves conducting manual penetration testing and security assessments of web applications, APIs, and enterprise platforms. You will identify and exploit vulnerabilities, produce detailed technical reports, and work closely with application owners and security stakeholders to improve the organization's cyber resilience.

Salt Search London, United Kingdom £75,000 – £110,000 pa

Lead Ethical Hacking Penetration Tester

Lead and conduct penetration testing, vulnerability assessments, and ethical hacking activities across applications, infrastructure, and networks. Provide expert-level cyber security assurance, produce risk-based reports, and guide remediation efforts. Contribute to government-wide security strategy and support team development within a hybrid working environment.

Driver & Vehicle Licensing Agency Swansea, West Glamorgan, United Kingdom £57,515 – £82,430 pa
Hybrid Permanent Clearance Required
Adecco logo

Cloud Security Consultant x3 (SC Cleared) UK Wide

Design and implement secure cloud solutions across public, private, and hybrid environments, aligning with client cloud strategies and zero trust principles. Develop security reference architectures, conduct threat modelling, and guide secure by design practices. Utilise automation and orchestration tools, including emerging agentic AI, while supporting and coaching cross-functional teams.

Adecco United Kingdom £70,000 – £100,000 pa

Graduate Security Consultant / Penetration Tester

This role involves conducting security assessments, vulnerability scans, and penetration testing under supervision. You will work on real client engagements, produce detailed reports, and continuously develop your knowledge of security tools and techniques.

Oscar Technology Bristol, United Kingdom £28,000 – £34,000 pa
Cambridge University Press & Assessment (CUPA) logo

Cyber Security Lead

This role involves setting the cyber security strategy and priorities for English Learning Technology, providing expert advice on cyber risk, and leading a small security operations team. The position requires deep expertise in security governance, risk management, and cloud security, with a focus on AWS.

Cambridge University Press & Assessment (CUPA) Cambridge, Cambridgeshire, United Kingdom £71,800 – £91,600 pa
Hybrid Permanent