Founding AI Engineer (£70k-£120k + Equity) at VC-backed AI security startup

Added 26/06/2026

We are seeking a Founding AI Engineer to join a cutting-edge, VC-backed startup focused on revolutionizing security through advanced artificial intelligence technologies. In this pivotal role, you will be responsible for designing, developing, and deploying AI-driven security solutions that address complex challenges in the cybersecurity landscape. Your expertise will guide the technical direction of our products, ensuring they are not only innovative but also effective in safeguarding our clients' digital assets. The ideal candidate will possess a strong background in machine learning, data science, and software engineering. You will collaborate closely with cross-functional teams to define product requirements, develop algorithms,...

Technical Lead / CTO (+ Equity) at London startup building national security software

Added 21/05/2026

We are seeking a dynamic Technical Lead / CTO to join a pioneering London-based startup focused on developing cutting-edge national security software. In this role, you will spearhead the technical vision and strategy while overseeing the development and deployment of innovative software solutions. You will lead a talented engineering team, providing mentorship and guidance to ensure the successful execution of projects from conception to launch. You will be responsible for defining the technical architecture, implementing best practices, and fostering an agile development environment that encourages creativity and collaboration. As a key member of the leadership team, you will engage with...

Security Engineer (£110k-£200k + Equity) at $100M Series B AI a confidential company response platform

Added 08/06/2026

We are seeking an experienced Security Engineer to join a fast-growing AI-driven company poised for significant impact in the response platform space. In this role, you will be responsible for designing, implementing, and maintaining robust security measures that protect our infrastructure, applications, and data. Your expertise will help shape our security architecture and strategy, ensuring compliance with industry standards while proactively identifying and mitigating potential threats. The ideal candidate will have a strong background in cybersecurity, with a deep understanding of network security, application security, and cloud security practices. You will work closely with cross-functional teams to conduct risk assessments,...

Security GRC Manager at $20M YC-backed AI workplace infrastructure startup

Added 12/06/2026

We are seeking an experienced Security GRC Manager to join our dynamic team at a rapidly growing AI workplace infrastructure startup. In this role, you will be responsible for developing, implementing, and managing our governance, risk, and compliance (GRC) framework. You will collaborate with cross-functional teams to ensure that our security policies and procedures align with industry standards and regulatory requirements. Your expertise will be critical in identifying potential security risks and developing strategies to mitigate them, ensuring the organization’s data integrity and security posture are maintained at the highest level. The ideal candidate will have a strong background in...

IT & Security Associate at VC-backed autonomous manufacturing startup

Added 11/05/2026

Join a dynamic and innovative VC-backed autonomous manufacturing startup as an IT & Security Associate. In this pivotal role, you will be responsible for maintaining and enhancing our IT infrastructure and security protocols. Your primary duties will include monitoring network performance, troubleshooting hardware and software issues, and ensuring the security of sensitive data. You will collaborate with cross-functional teams to implement IT policies and procedures that align with industry standards, ensuring the highest levels of operational efficiency and data integrity. As an IT & Security Associate, you will also play a key role in conducting regular security audits, managing user...

Founding Platform & Security Engineer at Gradient Labs

Added 26/06/2026

We are seeking a Founding Platform & Security Engineer to join our innovative team, where you will play a crucial role in building and securing our platform from the ground up. In this position, you will design, implement, and maintain robust security measures while ensuring high availability and scalability of our infrastructure. You will collaborate closely with cross-functional teams to develop secure, efficient, and reliable systems, while also leading the charge in identifying potential threats and vulnerabilities. Your expertise will be essential in establishing best practices for security and compliance from the outset. The ideal candidate will have a strong...

Founding Engineer at Asymmetric Security

Added 16/06/2026

We are seeking a talented and innovative Founding Engineer to join our dynamic team. In this pivotal role, you will be responsible for designing and implementing cutting-edge security solutions that address the evolving challenges in the cybersecurity landscape. You will collaborate with cross-functional teams to develop software architecture and drive the product development lifecycle from concept to deployment. Your ability to identify potential security vulnerabilities and design robust systems will be crucial in ensuring the integrity and confidentiality of our products. The ideal candidate will have a strong background in software engineering, with expertise in secure coding practices and familiarity...

Cybersecurity Engineer - Full Stack

Added 16/04/2026

We are seeking a skilled Cybersecurity Engineer - Full Stack to join our dynamic team. In this role, you will be responsible for developing and implementing robust security solutions across our applications and infrastructure. You will analyze system vulnerabilities and design comprehensive security measures to protect our assets against cyber threats. Your expertise will be instrumental in conducting security assessments, penetration testing, and incident response, ensuring that our systems meet compliance and regulatory standards. The ideal candidate will possess strong proficiency in various programming languages and frameworks, along with a deep understanding of cybersecurity principles. You will work closely with...

Cybersecurity Engineer - Full Stack

Added 23/01/2026

We are seeking a dedicated and innovative Cybersecurity Engineer - Full Stack to join our dynamic team. In this role, you will be responsible for designing, implementing, and maintaining secure systems and applications across our digital landscape. You will collaborate closely with cross-functional teams to identify vulnerabilities, develop security protocols, and ensure compliance with industry standards. Your expertise will be crucial in safeguarding our digital assets and protecting sensitive information from cyber threats. The ideal candidate will possess a strong understanding of cybersecurity principles as well as proficiency in both front-end and back-end development. Your primary duties will include conducting...

Lead Security - Full-Stack Software Engineer

Added 01/06/2026

We are seeking a Lead Security - Full-Stack Software Engineer to join our dynamic team, focusing on developing secure and scalable software solutions. In this role, you will be responsible for designing, implementing, and maintaining high-quality applications while ensuring the highest security standards are met. You will collaborate with cross-functional teams to identify potential vulnerabilities, conduct security assessments, and integrate security best practices into the software development lifecycle. Your expertise will guide the team in making informed decisions regarding security architecture and technologies. The ideal candidate will possess a strong background in both front-end and back-end development, with proficiency in...

Senior Full Stack Developer - UK Security Clearance Eligibility required

Added 08/05/2026

We are seeking a highly skilled Senior Full Stack Developer with UK Security Clearance eligibility to join our dynamic team. In this role, you will be responsible for designing, developing, and maintaining complex software applications across both front-end and back-end platforms. Your expertise will be crucial in implementing user-friendly interfaces while ensuring robust server-side logic. You will collaborate with cross-functional teams to gather requirements, conduct code reviews, and ensure the highest quality of software deliverables. The ideal candidate will have a strong background in various programming languages and frameworks, including but not limited to JavaScript, Python, and Java. Proficiency in...

Senior Full Stack Developer - UK Security Clearance Eligibility required.

Added 15/04/2026

We are seeking a talented Senior Full Stack Developer with eligibility for UK Security Clearance to join our dynamic team. In this role, you will be responsible for designing, developing, and maintaining complex web applications and services that meet the highest standards of security and performance. You will work collaboratively with cross-functional teams to translate business requirements into technical specifications, ensuring seamless integration between front-end and back-end systems. Your expertise in modern programming languages and frameworks will be essential in driving the development of innovative solutions that enhance user experience. The ideal candidate will have extensive experience in both front-end...