126 to 150 of 164 Senior Security Engineer Jobs in London

Depository Trust & Clearing Corporation (DTCC) is hiring for a Cloud Security Operations Specialist within the IT Cybersecurity & Platform Strategy group. You will support cloud security across AWS, Azure, and GCP, monitor controls, assist with remediation, and help maintain secure, compliant cloud environments. You will implement security baselines ...

Snyk seeks a Senior Solutions Engineer to lead the technical narrative for Evo and AI-era security within large UK-based enterprises. You will align technical strategy with executive goals, co-manage high-value opportunities, and demonstrate solid ROI through pilots and POCs. You’ll bridge development … security leadership, quantify business impact, and collaborate with product and engineering teams to secure long-term partnerships. Hybrid London-based role with global impact. #J-18808-Ljbffr ...

Arcadis is seeking a Network Engineer to contribute to the planning, design, and optimization of the company’s network and security infrastructure. You will engage in evaluating technologies, testing, and providing advanced troubleshooting as part of the Network Operations team. The role requires deep expertise in network design … security controls, and collaboration with global stakeholders to deliver resilient connectivity and proactive threat mitigation. #J-18808-Ljbffr ...

LexisNexis Risk Solutions seeks a software engineer to design, build, deploy and support production-ready AWS-based services with secure, observable operations. You will work in a cross-functional Agile team, mentor colleagues, and help shape engineering standards while delivering reliable releases. Candidates should have strong Python/JavaScript ...

seeking a Senior Systems Engineer to drive technology programs, including Cloud implementation and support, desktop engineering escalation and networking for a defined client portfolio. Hybrid work with a London-area preference. You’ll lead migrations, manage complex issues, and contribute to the internal knowledge base while delivering best … practice security configurations such as MFA and conditional access. #J-18808-Ljbffr ...

Frontier Resourcing is seeking a Senior Test Engineer (eDV) to join our software delivery function in a National Security-facing role. The position is office-based at one of Gloucestershire, Manchester or London locations. You will work within an experienced team, ensuring software quality across multiple business … areas, with emphasis on eDV UK Security Clearance. The role requires collaboration with agile delivery teams and proficiency in test automation and environments. #J-18808-Ljbffr ...

Gold Group Limited is seeking a Senior Cloud Engineer to own cloud infrastructure and security within our London-area MSP environment. You’ll work closely with a skilled team to enhance client IT performance, network, and security posture. You’ll lead deployments, automate tasks, and liaise … with clients to deliver robust solutions, while keeping up with evolving technologies and best practices in cloud security and collaboration tools. #J-18808-Ljbffr ...

Odevo AB is seeking a Senior IAM Engineer to shape the next generation of our identity & access management capabilities. You will work across Microsoft Entra ID, Active Directory, identity governance, and privileged access with a strong focus on automation, security, and lifecycle management. You will influence technical ...

Fortinet is seeking a Senior Software Engineer for the Agent Endpoint DLP team, based in Moorgate, London. You will drive new capabilities in the FortiDLP endpoint agent, with a focus on kernel-level development and secure, high-quality code in a fast-growing cybersecurity environment. You will work ...

help organisations adopt secure-by-design cloud infrastructures and offer deep expertise in threat modelling, DevSecOps, and platform engineering. We are looking for Senior Cloud Native Security Consultants to lead client engagements, contribute to internal labs, and represent ControlPlane in Open Source communities. #J-18808-Ljbffr ...

Viasat is seeking a Senior Network Engineer to ensure reliable, secure, and scalable enterprise network operations across on‐premises and cloud environments. You will contribute to network architecture, deployment, and operational readiness, partnering with infrastructure, security, and application teams. The role requires deep networking expertise, cloud networking ...

Gold Group in London is seeking an experienced Senior Cloud Engineer to own the proactive, cloud and security-focused side of our technical environment within a growing MSP. You will work with a small, highly skilled engineering team to improve clients’ infrastructure, security and IT performance ...

Source Technology Limited in London is seeking a Principal AI Software Engineer to lead the hands-on delivery of a portfolio of agentic AI security applications. You will translate a complex target architecture into production-quality software, supervising multiple engineers while remaining deeply technical. This role requires deep ...

Pacific Life Re is seeking a Senior Cloud Engineer to maintain, optimise, and evolve AWS workloads across multiple regions. The role focuses on security, reliability, governance, and lifecycle management, operating within enterprise standards and cloud shared services. You will engage in platform provisioning, improve tooling, and support ...

National Physical Laboratory (NPL) in the United Kingdom seeks a Senior Platform Engineer to lead Linux, tooling and security across enterprise platforms. The role focuses on automation, DevOps practices, PKI, and identity/security services, with travel to sites as required. Fixed-term 12-month contract ...

National Physical Laboratory seeks a Senior Network Engineer to lead on‐prem network design, deployment, and security within a hybrid infrastructure. You will manage Alcatel‐Lucent switches, Fortinet firewalls, and associated services, while coordinating with cybersecurity for secure, reliable connectivity across the UK site footprint. ...

QinetiQ Limited in London is seeking a Senior Cloud Engineer to design, build and support secure AWS-based environments for high‐security customer programmes. You will join a growing cloud engineering team, collaborating with technical leads, architects and stakeholders to deliver resilient infrastructure and automated deployments. With ...

Klarna seeks an experienced offensive mobile security specialist to protect its iOS and Android apps. You will conduct pentests and red-team exercises, reverse-engineer binaries, and apply MASVS/MASTG guidance to drive concrete engineering fixes. You will collaborate with software engineers to harden app security, test RASP protections, and document actionable remediation steps. This role requires hands-on testing across mobile platforms and a track record of security research or bug bounty work. #J-18808-Ljbffr ...

Associates is seeking an experienced SC/DV-cleared Senior Infrastructure Engineer for a London-based hybrid role. You will design, implement and support secure Microsoft infrastructure across complex enterprise environments, focusing on identity, security, automation and operations. Active clearance is required, with 2–3 days onsite ...

Hamilton Barnes Associates Limited is seeking a Senior Network Engineer to take technical ownership of design, implementation, and mentoring within a small engineering team. This home-based role includes occasional visits to our East London data centre and covers routing, switching, network security, wireless, cloud networking … Linux technologies. You will design, deliver, and support a hybrid network spanning on‐premises, data centre, and cloud environments, act as senior SME, mentor junior #J-18808-Ljbffr ...

Carrington Blake Recruitment is looking for an experienced Senior Cloud Engineer to join our Cloud Engineering team. This role encompasses designing and delivering scalable cloud infrastructures and supporting automation initiatives. The candidate must possess strong skills in Microsoft Azure environments, Infrastructure as Code, and cloud security best ...

Jefferies is strengthening Global Information Security with senior engineering to deploy AI-driven automation across identity, privilege, network and cloud security. The London-anchored role supports APAC and Americas coverage as a production software engineer who ships AI-backed systems and owns them as services. You will … design and operate AI-assisted automation across security domains, with a focus on testable, auditable, least-privilege workflows and robust monitoring. #J-18808-Ljbffr ...

Wise in London is seeking a Senior Software Engineer II for the FinCrime - Scam Prevention Team. You will own end-to-end delivery, applying Java and Spring to scale defenses against fraud and protect customer funds. The role balances backend work (80%) and frontend (20%), with an emphasis ...

Fortinet, Inc. is seeking a Senior Software Engineer to join the Agent Endpoint DLP team in London. The role focuses on kernel and OS-level development for the FortiDLP endpoint agent, with ownership of new features and maintenance of existing functionality. You will work in a cross-functional … primary language while expanding proficiency in other languages. The role requires strong coding practices, collaboration across teams, and a commitment to security and #J-18808-Ljbffr ...

Everfox is seeking a Senior Software Engineer to support our London team. You will split time between hands-on work on cross-platform desktop and mobile apps and managing delivery across the end-point software layer of the Hardsec product line. You will shape and deliver end-point ...