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...

Founding AI Security Engineer / Researcher at Refractal

Added 01/09/2026

We are seeking a Founding AI Security Engineer / Researcher to define and build the security foundations for advanced artificial intelligence systems. This is an early, high-impact role for someone who is comfortable working across research, engineering, and product development. You will investigate emerging threats affecting machine learning models, AI agents, data pipelines, and deployment infrastructure, translating your findings into practical safeguards and scalable security capabilities. Your responsibilities will include designing threat models for AI systems; identifying vulnerabilities such as prompt injection, data poisoning, model extraction, insecure tool use, and adversarial manipulation; and developing methods to evaluate model and application...

Senior IT Support & Endpoint Security Engineer at Cloudnc

Added 03/09/2026

We are seeking a Senior IT Support & Endpoint Security Engineer to provide expert technical support and help maintain a secure, reliable, and efficient workplace technology environment. This role will combine hands-on troubleshooting with endpoint administration, security operations, and continuous improvement. You will act as an escalation point for complex technical issues, supporting users across a range of devices, operating systems, applications, and cloud-based services. Key responsibilities will include managing and securing laptops, desktops, mobile devices, and other endpoints throughout their lifecycle; administering endpoint management, identity, access, and security platforms; and monitoring device compliance, vulnerabilities, and security alerts. You will...

Cyber Lead - DevSecOps (CTO)

Added 01/09/2026

We are seeking an experienced Cyber Lead to drive the integration of security throughout the software development and technology lifecycle. This is a strategic and hands-on role responsible for establishing and embedding DevSecOps practices across engineering, cloud, infrastructure and product teams. You will help shape secure-by-design principles, improve development standards and ensure that security is treated as a shared responsibility across the technology function. Key responsibilities will include defining and implementing a DevSecOps roadmap; integrating security controls, testing and monitoring into CI/CD pipelines; strengthening application, cloud and infrastructure security; and supporting secure architecture and technical design reviews. You will lead...

Head of InfoSec at AIOS — Remote, $150-250k/yr inc equity

Added 18/08/2026

We are seeking a highly skilled and experienced Head of Information Security to lead our cybersecurity initiatives in a fully remote capacity. In this pivotal role, you will be responsible for developing and implementing a comprehensive information security strategy to protect our assets, data, and technology infrastructure. You will oversee the design and execution of security protocols, ensuring compliance with industry standards and regulations while fostering a culture of security awareness across the organization. Your responsibilities will include leading a team of security professionals, conducting risk assessments, and managing incident response efforts to address any security breaches effectively. You will...

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...

Founding Security Researcher

Added 11/09/2026

We are seeking a Founding Security Researcher to establish and lead the security research function from the ground up. This is a highly influential role for an experienced security professional who enjoys investigating emerging threats, translating technical findings into practical defensive strategies, and shaping the direction of a growing security programme. You will work closely with engineering, product, infrastructure, and leadership teams to identify risks, strengthen security controls, and build a culture of security by design. Your responsibilities will include conducting in-depth research into vulnerabilities, attack techniques, malware, exploitation methods, and relevant developments across the threat landscape. You will design...

M365 Security Consultant ( M365 security, Defender, Sentinel and Microsoft security stack.)

Added 19/08/2026

We are seeking a skilled M365 Security Consultant with a strong focus on M365 security, Microsoft Defender, Sentinel, and the broader Microsoft security stack. In this critical role, you will be responsible for designing, implementing, and managing security solutions that protect our clients’ environments. You will work closely with cross-functional teams to assess security requirements, identify vulnerabilities, and recommend appropriate security measures. Your expertise will help in developing security policies, procedures, and best practices tailored to Microsoft 365 environments. The ideal candidate will have hands-on experience with Microsoft security technologies, particularly Defender for Endpoint, Microsoft Sentinel, and Azure Active Directory....

OT Cybersecurity Engineer (Offensive Security / Security Assessments / Security Testing)

Added 28/07/2026

We are seeking a skilled OT Cybersecurity Engineer specializing in Offensive Security, Security Assessments, and Security Testing to join our dynamic team. In this role, you will be responsible for conducting thorough security assessments of operational technology (OT) environments, identifying vulnerabilities, and recommending appropriate mitigation strategies. You will work closely with cross-functional teams to ensure that security measures are effectively implemented and aligned with industry best practices. Your key responsibilities will include performing penetration testing and vulnerability assessments on OT systems, analyzing security controls and configurations, and developing detailed reports on findings with actionable recommendations. You will also participate in...

Content Security Specialist, EMEA, GME Security

Added 21/09/2026

We are seeking a Content Security Specialist to support content protection across the EMEA region. In this role, you will help safeguard sensitive content and intellectual property throughout its lifecycle, from development and production through distribution and archiving. You will work with internal teams, external partners and service providers to identify security risks, strengthen controls and promote consistent content protection practices across multiple markets. Your responsibilities will include conducting security reviews and risk assessments, monitoring compliance with content protection standards, and supporting the implementation of policies, procedures and technical safeguards. You will investigate incidents, coordinate response activities and track remediation...

IT CONSULTANT (IT Management, Cloud Computing & Cyber Security Security)

Added 18/09/2026

We are seeking an experienced IT Consultant specialising in IT management, cloud computing and cyber security to support organisations in designing, improving and securing their technology environments. The successful candidate will provide strategic and practical advice across infrastructure, systems, cloud services, governance and information security, helping clients align technology with operational objectives, regulatory requirements and business continuity needs. Responsibilities will include assessing existing IT environments, identifying risks and opportunities, and developing effective technology strategies and improvement plans. You will advise on cloud adoption, migration and optimisation across platforms such as Microsoft Azure or Amazon Web Services, while considering scalability, resilience,...

Delivery Consultant - Security, Global ProServe Security

Added 17/09/2026

We are seeking a Delivery Consultant specialising in security to help organisations design, implement and optimise secure cloud and technology environments. In this role, you will work closely with customers, technical stakeholders and delivery teams to understand business requirements, assess existing security capabilities and develop practical solutions aligned with industry standards. You will contribute across the full delivery lifecycle, from discovery and architectural design through implementation, testing, documentation and handover. Your responsibilities will include leading or supporting security-focused engagements, advising on identity and access management, data protection, network security, threat detection, vulnerability management, incident response and governance. You will translate...

Security Engineer, AWS Security

Added 17/09/2026

We are seeking a Security Engineer, AWS Security to strengthen cloud security capabilities across a dynamic and continually evolving environment. In this role, you will design, implement and maintain security controls for AWS services, applications and infrastructure. You will work closely with engineering, platform, architecture and risk teams to identify threats, reduce vulnerabilities and embed secure-by-design principles throughout the software development lifecycle. Your responsibilities will include developing and improving cloud security architectures; configuring and managing AWS security services such as IAM, GuardDuty, Security Hub, CloudTrail, KMS, Config and WAF; and supporting identity, access and secrets management. You will create and...