Latest Application Security Engineer Jobs

Software Engineer in Test

Design and build automated test frameworks across API, UI, and integration layers, integrated into CI/CD pipelines. Collaborate closely with engineering teams to implement shift-left testing, improve code quality, and influence test strategy. Work in a culture of engineering excellence, contributing to architecture and continuous improvement while supporting performance and security testing as needed.

Darktrace Cambridge, CB2 3BJ, United Kingdom

Hybrid Permanent

Cloud Native DevOps Engineer- SC Cleared

This role involves designing and building cloud solutions using AWS and DevOps best practices, managing scalable infrastructure with Kubernetes, Terraform, and CloudFormation, and working directly with clients and project teams to deliver technical solutions. The position is part of a top consultancy delivering mission-critical projects for Defence and National Security clients.

Searchability NS&D Gloucestershire, United Kingdom £40,000 – £95,000 pa

On-site Permanent Clearance Required

Trainee DevOps Engineer | No experience needed (Ref: 7501)

This traineeship provides a structured learning path to become a DevOps Engineer, covering fundamentals like cloud computing, CI/CD, IaC, and containerisation. Participants will work on real-world projects, building CI/CD pipelines, deploying applications to the cloud, and creating infrastructure templates.

Qualify Nation Recruitment Leeds, United Kingdom £28,000 – £38,000 pa

Trainee DevOps Engineer | No experience needed (Ref: 7501)

This traineeship provides structured learning and practical projects to develop skills in DevOps fundamentals, cloud computing, CI/CD, IaC, and security. You will work on real-world projects, build a professional portfolio, and receive mentoring and career guidance.

Qualify Nation Recruitment Glasgow, Alba / Scotland, G2 1AL, United Kingdom £28,000 – £38,000 pa

Remote Internship Flexible

Lead Linux Engineer

This role involves leading the design, administration, and support of large-scale Linux environments, including HPC platforms, container orchestration, and hybrid cloud infrastructures. You will work closely with DevOps, security, and operations teams to deliver robust, scalable, and secure solutions.

Sopra Steria Portsmouth, United Kingdom

DevOps Engineer- eDV Cleared

This role involves working as a DevOps Engineer on high-impact, mission-critical projects for National Security clients. You will be part of a consultancy that delivers cutting-edge solutions, with a focus on containerization, infrastructure as code, and hands-on technical expertise.

Searchability NS&D Manchester, United Kingdom £35,000 – £65,000 pa

On-site Permanent Clearance Required

Network Engineer III - Backbone , London)

Design and operate large-scale, fault-tolerant hybrid cloud networks connecting data centers and edge locations across multiple cloud providers. Focus on IP and optical technologies, automation via infrastructure-as-code, and improving network reliability, scalability, and security. Lead initiatives from concept to deployment while participating in on-call support for critical systems.

CrowdStrike London, United Kingdom

Hybrid Permanent

Senior Solution Architect - Email & Collaboration Security

This role involves shaping the technical direction of Mimecast's core Email & Collaboration Security (ECS) product line by translating complex customer and business challenges into durable, scalable architectures. The Senior Architect will lead problem-framing workshops, own critical integration contracts, and ensure engineering teams have a stable foundation to innovate quickly—while navigating two decades of legacy systems and AI-augmented threats. The position demands deep collaboration across product, engineering, and architecture leadership, with a strong emphasis on AI-first design practices and cost-aware, customer-centric decision-making.

Mimecast London, United Kingdom £124,000 – £186,000 pa

On-site Permanent Clearance Required

Specialist Software Engineer

This role involves leading high-impact technical projects within Darktrace’s R&D team in Cambridge, focusing on advancing AI-driven cybersecurity solutions. The engineer will drive innovation in defending against unknown cyber threats, mentor team members, and align technical strategy with business goals. The position requires a blend of deep technical expertise, strategic vision, and cross-functional collaboration in a hybrid work environment.

Darktrace United Kingdom

Senior Site Reliability Engineer

This role involves ensuring the reliability, scalability, and security of business-critical cloud platforms, particularly on Azure. Responsibilities include leading investigations into service outages, implementing automation, and designing monitoring and alerting systems. The position requires strong Azure, Kubernetes, and observability expertise.

Spectrum IT Recruitment Southampton, United Kingdom £75,000 – £85,000 pa

Hybrid Permanent Clearance Required

Research Assistant in Agentic AI Security

The role involves researching and developing security measures for AI coding assistants and automated code review agents. Responsibilities include implementing proof-of-concept attacks and defenses, curating vulnerable-code datasets, and contributing to academic papers and industry outreach.

Queen's University Belfast Belfast, United Kingdom £36 – £41 pa

On-site Contract

Senior Engineering Manager – Data

Lead and grow a team of 8+ data engineers to modernize and scale a cloud-based data platform that powers cyber resilience insights. Drive data engineering strategy, improve architecture and reliability, and foster a culture of technical excellence and inclusion. Collaborate with product, analytics, and commercial teams to deliver scalable, secure data solutions that support business decision-making at a global level.

Immersive Bristol, Gloucestershire, United Kingdom

Hybrid Permanent

Sr. Engineer, Frontend - Data Platform Experiences , London)

This role involves designing and building data-first UI surfaces, including schema exploration, lineage, query, semantic modeling, and dashboards. You'll work closely with UX, backend, and platform engineers to create intuitive and accessible experiences for technical users, while contributing to and extending a shared component language.

CrowdStrike London, United Kingdom

Hybrid

AWS Cloud Platform Engineer

This role involves designing, building, and maintaining secure, scalable AWS cloud platforms for digital financial applications. Responsibilities include infrastructure automation, CI/CD pipeline management, and cloud security, working closely with engineering, security, and operations teams.

Pontoon Dublin, City Of Dublin, Ireland £474 pd

Senior Forward Deployed Engineer

This role involves diagnosing and resolving technical issues for Incydr customers, from deployment to ongoing operations, using deep access to code and telemetry. The engineer builds custom integrations, troubleshoots in complex environments, and bridges customer needs with product engineering, while coaching customer teams and shaping product improvements based on field insights. The position combines hands-on engineering with direct customer engagement in a security-focused, AI-first environment.

Mimecast London, United Kingdom £80,000 – £120,000 pa