Senior Site Reliability Engineer / SecOps Engineer

Added 01/09/2026

We are seeking a Senior Site Reliability Engineer / SecOps Engineer to strengthen the reliability, security, and operational resilience of critical digital services. This role combines site reliability engineering, cloud infrastructure, automation, and security operations, with responsibility for ensuring systems remain available, scalable, observable, and protected. You will work closely with engineering, product, and infrastructure teams to identify operational risks, improve platform performance, and embed secure practices throughout the software development lifecycle. Key responsibilities include designing and maintaining resilient cloud infrastructure; developing infrastructure as code and automated deployment pipelines; monitoring system health, performance, and availability; and leading incident response, root-cause...

Senior Security Engineer, AWS Security Verification & Validation Team

Added 14/10/2026

We are seeking a Senior Security Engineer to join a specialist Security Verification and Validation team responsible for assessing the resilience, security, and compliance of complex cloud-based services. In this role, you will help identify security weaknesses before they can affect customers, strengthen defensive controls, and promote secure engineering practices across a large-scale technology environment. You will work closely with software engineers, architects, incident responders, and risk specialists to evaluate systems throughout their development and operational lifecycles. Your responsibilities will include designing and executing security assessments, threat modelling exercises, penetration tests, architecture reviews, and control validation activities. You will investigate...

Senior Security Consultant (Platform Security Engineer) - Permanent

Added 07/10/2026

We are seeking a Senior Security Consultant (Platform Security Engineer) to strengthen the security, resilience and compliance of critical technology platforms. This permanent role is suited to an experienced security professional who can combine hands-on engineering expertise with strategic consulting skills. You will work with technology, product and operational teams to identify security risks, design effective controls and embed secure practices throughout the platform lifecycle. Your responsibilities will include assessing platform architectures, cloud environments, infrastructure and deployment pipelines; defining security requirements; and advising on identity and access management, network security, encryption, secrets management, vulnerability management and secure configuration. You will...

Senior Security Engineer - Enterprise Security

Added 29/09/2026

We are seeking a Senior Security Engineer to strengthen enterprise security capabilities across a complex, technology-driven environment. This role will be responsible for designing, implementing and continuously improving security controls that protect corporate systems, cloud platforms, networks, applications and sensitive data. You will work closely with infrastructure, software engineering, architecture, compliance and risk teams to ensure security is embedded throughout the technology lifecycle. Key responsibilities include developing and maintaining security architecture, standards and engineering patterns; assessing technical risks and recommending practical mitigations; supporting identity and access management, endpoint protection, network security, vulnerability management and cloud security initiatives; and contributing to...

Senior Security Engineer, AWS Security

Added 07/09/2026

We are seeking a Senior Security Engineer to help design, implement, and continuously improve security capabilities across cloud infrastructure and services. In this role, you will work with engineering, operations, compliance, and product teams to protect highly available systems, strengthen security architecture, and manage risk across the organisation. You will provide technical leadership on complex security initiatives and help establish scalable, automated controls that support secure delivery at pace. Key responsibilities include designing and reviewing cloud security architectures; developing identity and access management strategies; implementing controls for network, data, application, and infrastructure security; and improving monitoring, detection, and response capabilities....

Senior Software Security Engineer (£98k-£115k + Equity) at Harmonic Security Inc.

Added 03/09/2026

We are looking for a Senior Software Security Engineer to help build secure, resilient products in a fast-moving technology environment. This is a hands-on role for an experienced engineer who can combine strong software development skills with a deep understanding of application and cloud security. You will work closely with engineering, product and infrastructure teams to embed security throughout the software development lifecycle, from design and implementation through to deployment and ongoing improvement. The position offers a salary of £98,000–£115,000 plus equity. Your responsibilities will include designing and implementing secure, scalable services; reviewing code and architecture for vulnerabilities; developing security...

Senior Offensive Security Engineer — Founding Security Hire

Added 01/09/2026

We are seeking a Senior Offensive Security Engineer to become the founding security hire and establish the foundations of a high-impact security function. This is a hands-on role for an experienced security professional who enjoys working across product, infrastructure, cloud environments, and organisational processes. You will define and execute a practical offensive security programme, identify meaningful risks, and partner closely with engineering and leadership teams to improve the security of systems, applications, and customer-facing services. Your responsibilities will include planning and conducting penetration tests, red-team exercises, vulnerability assessments, and threat-led reviews across web applications, APIs, cloud platforms, networks, and internal...

Senior Staff Security Engineer, AI Security

Added 25/08/2026

We are seeking a Senior Staff Security Engineer, AI Security, to help define and advance security strategy for artificial intelligence and machine learning systems. This role will lead the design of secure-by-default architectures, protections, and engineering practices across the AI lifecycle, from data ingestion and model development through deployment, monitoring, and retirement. You will work closely with research, product, infrastructure, privacy, legal, and incident response teams to identify emerging threats and translate them into practical controls that enable responsible innovation. You will conduct threat modelling and security reviews for AI platforms, model-serving infrastructure, agents, APIs, and supporting services; develop mitigations...

Senior Staff Security Engineer, AI Security

Added 25/08/2026

We are seeking a Senior Staff Security Engineer, AI Security to lead the design and implementation of security strategies for artificial intelligence and machine learning systems. This role will help define how AI capabilities are developed, deployed, monitored, and governed securely across a complex technology environment. You will work closely with engineering, research, infrastructure, privacy, legal, and product teams to identify emerging threats, establish practical controls, and ensure security is embedded throughout the AI lifecycle. Responsibilities include developing threat models for AI systems, applications, data pipelines, model supply chains, and supporting infrastructure; assessing risks such as prompt injection, data poisoning,...

Senior Content Security Engineer, GME Security

Added 19/08/2026

We are seeking a highly skilled Senior Content Security Engineer to join our dynamic team. In this role, you will be responsible for developing and implementing comprehensive content security strategies that safeguard our digital assets. You will work closely with cross-functional teams to identify vulnerabilities, assess risks, and create innovative solutions to protect sensitive information. Your expertise will be crucial in establishing best practices for content security, ensuring compliance with industry standards, and driving the adoption of secure coding practices across all development projects. The ideal candidate will have extensive experience with content management systems, web application security, and data...

Senior Content Security Engineer, GME Security

Added 18/08/2026

We are seeking a highly skilled Senior Content Security Engineer to join our dynamic security team. In this role, you will be responsible for developing, implementing, and maintaining robust content security strategies to safeguard our digital assets. You will work collaboratively with cross-functional teams to assess security risks, conduct vulnerability assessments, and design solutions that ensure the integrity and confidentiality of our content. Your expertise will be pivotal in enhancing our security policies and practices, as well as in providing guidance on secure coding and application development standards. The ideal candidate will possess a strong understanding of content security frameworks...

Senior Specialist Field Engineer - Security

Added 16/10/2026

We are seeking a Senior Specialist Field Engineer – Security to provide expert technical support, installation and maintenance services across a range of security systems and customer sites. The successful candidate will act as a senior point of contact for complex field-based activities, ensuring that systems are delivered, tested and maintained to a high standard. This role will involve regular travel, working independently and collaboratively to support operational requirements and customer expectations. Key responsibilities will include surveying sites, planning and completing installations, configuring and commissioning security solutions, and carrying out preventative and reactive maintenance. You will diagnose faults, undertake repairs...

Senior Network Security Infrastructure Engineer

Added 16/10/2026

We are seeking a Senior Network Security Infrastructure Engineer to design, implement and maintain secure, resilient network infrastructure across a complex technology environment. You will provide technical leadership for network security initiatives, ensuring that systems, services and connectivity remain protected, available and aligned with current security standards. The role will involve working closely with infrastructure, cloud, application and security teams to develop practical solutions that support business requirements while reducing operational and cyber risk. Your responsibilities will include designing and reviewing network security architecture; managing firewalls, secure web gateways, VPNs, intrusion prevention systems and related security controls; and maintaining secure...

Senior Information Security Engineer

Added 16/10/2026

We are seeking a Senior Information Security Engineer to help protect critical systems, services and data across a complex technology environment. This is an opportunity to provide technical leadership across security engineering, cloud protection, infrastructure security and incident response, while working closely with engineering, architecture, risk and operational teams. You will help develop practical, resilient security controls that support business objectives and meet regulatory and industry requirements. Your responsibilities will include designing, implementing and maintaining security solutions across cloud, network, endpoint, identity and application environments. You will lead the investigation and remediation of vulnerabilities, contribute to threat modelling and secure...

Senior Application Security Engineer

Added 16/10/2026

We are seeking a Senior Application Security Engineer to strengthen the security of modern software applications and services throughout their development lifecycle. This is an opportunity to work closely with engineering, platform, architecture and product teams, helping to embed secure-by-design principles across a complex technology environment. You will provide technical leadership, practical guidance and constructive challenge, while supporting a culture in which security is considered a shared responsibility. Your responsibilities will include defining and improving application security standards, reviewing designs and code, conducting threat modelling, and identifying vulnerabilities across web applications, APIs, cloud services and supporting infrastructure. You will help...