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 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,...

Founding Security & Compliance Engineer

Added 17/06/2026

We are seeking a Founding Security & Compliance Engineer to join our dynamic team in building robust security frameworks and compliance programs from the ground up. In this pivotal role, you will be responsible for designing, implementing, and maintaining security protocols that safeguard our infrastructure and data. You will conduct thorough risk assessments, identify vulnerabilities, and develop strategies to mitigate potential threats. Collaboration with cross-functional teams will be essential as you ensure compliance with industry standards and regulations, including GDPR, HIPAA, and PCI-DSS. Your expertise will drive the creation of security policies and procedures, while also educating team members about...

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...

Founding Engineer | SaaS | Identity Security & Attack Simulation | Fractional to Permanent

Added 11/05/2026

We are seeking a dynamic and innovative Founding Engineer to join a pioneering SaaS company specializing in identity security and attack simulation. This role offers a unique opportunity to play a critical role in shaping the future of our platform while working alongside a team of passionate professionals. As a key member of our founding team, you will be responsible for designing, developing, and deploying robust software solutions that enhance security and mitigate risks for our clients. Your expertise will drive the architecture and engineering decisions that will define our product's success in the marketplace. The ideal candidate will possess...

Founding Platform & Security Engineer

Added 26/04/2026

We are seeking a talented Founding Platform & Security Engineer to join our innovative team in building secure and scalable platforms from the ground up. In this critical role, you will be responsible for designing, implementing, and maintaining robust security measures across all aspects of our platform. You will work closely with cross-functional teams to ensure that security is integrated into the development lifecycle, identifying potential vulnerabilities and implementing solutions to mitigate risks. Your expertise will help shape the technical direction of our platform, and you will play a key role in establishing best practices for security and performance optimization....

Founding Platform & Security Engineer

Added 28/11/2025

We are seeking a visionary and driven Founding Platform & Security Engineer to join our dynamic startup team. In this pivotal role, you will be responsible for designing, building, and maintaining our core platform infrastructure while ensuring robust security measures are in place. Your expertise will guide the development of scalable and secure systems that support our innovative solutions. You will collaborate closely with product managers, developers, and other stakeholders to define technical requirements and implement best practices throughout the software development lifecycle. Your contributions will be crucial as we work to create a secure and reliable platform that meets...

Offensive Security Team Lead (Purple Team)

Added 24/03/2026

We are seeking a highly skilled Offensive Security Team Lead (Purple Team) to join our dynamic cybersecurity team. In this pivotal role, you will lead and coordinate the efforts of our offensive security initiatives, bridging the gap between red and blue teams to enhance our overall security posture. You will be responsible for designing, implementing, and managing advanced penetration testing and threat simulation exercises. Your expertise will be essential in identifying vulnerabilities, recommending strategic remediation measures, and fostering a culture of continuous improvement within the organization. As the Offensive Security Team Lead, you will oversee the development and execution of...

Offensive Security Team Lead (Purple Team)

Added 23/03/2026

We are seeking an experienced and dynamic Offensive Security Team Lead (Purple Team) to join our cybersecurity division. In this pivotal role, you will spearhead our efforts in blending offensive and defensive security strategies to enhance our organization’s overall security posture. You will lead a team of skilled professionals responsible for conducting sophisticated threat simulations, penetration testing, and red teaming exercises. Your expertise will be crucial in identifying vulnerabilities and formulating proactive measures to mitigate risks. You will also collaborate closely with the blue team to ensure a cohesive approach to threat detection and response, fostering a culture of continuous...

Offensive Security Team Lead (Purple Team)

Added 20/03/2026

We are seeking a highly skilled and motivated Offensive Security Team Lead (Purple Team) to join our dynamic cybersecurity team. In this pivotal role, you will be responsible for leading a talented group of security professionals focused on enhancing our organization’s security posture through proactive threat assessments and collaboration between our offensive and defensive teams. Your primary duties will include overseeing advanced penetration testing, red team exercises, and threat hunting initiatives, while ensuring effective communication and cooperation among team members. You will also be instrumental in developing and implementing innovative security strategies that address emerging threats and vulnerabilities. The ideal...

Sub Team Lead – Red team

Added 15/06/2026

We are seeking a skilled and motivated Sub Team Lead – Red Team to join our dynamic team of cybersecurity professionals. In this role, you will be responsible for leading a group of talented ethical hackers in identifying and mitigating potential security threats. Your primary duties will involve planning and executing red team engagements, conducting penetration testing, and developing strategies to improve the organization’s security posture. You will also collaborate closely with other teams to ensure that security measures are integrated into all aspects of the organization’s operations. As a Sub Team Lead, you will mentor and guide junior team...

Sub Team Lead - Red team

Added 15/06/2026

We are seeking an experienced Sub Team Lead for our Red Team to enhance our cybersecurity efforts. In this role, you will be responsible for overseeing a group of skilled penetration testers and threat analysts, ensuring the execution of advanced red teaming assessments. Your duties will include planning and coordinating complex security engagements, simulating real-world attacks, and identifying vulnerabilities within the organization’s systems and infrastructure. You will also be expected to mentor team members, sharing your expertise in various attack methodologies and tools. In addition to leading your team, you will collaborate closely with other cybersecurity functions, including blue teams...

Sub Team Lead - Red Team (Control)

Added 06/05/2026

We are seeking a skilled Sub Team Lead - Red Team (Control) to enhance our cybersecurity capabilities. In this role, you will be responsible for leading a dedicated team of security professionals in executing red team operations. You will drive the planning, execution, and reporting of simulated attacks to identify vulnerabilities within our systems and processes. Your expertise will be pivotal in developing strategies and methodologies that enhance the effectiveness of our red team’s engagements, ensuring that we stay ahead of potential threats. The ideal candidate will possess a deep understanding of offensive security techniques, including penetration testing and vulnerability...

Sub Team Lead - Red Team (Control)

Added 30/04/2026

We are seeking a skilled Sub Team Lead for our Red Team (Control) to spearhead offensive security initiatives and enhance our organization's security posture. In this role, you will lead a dedicated team of cybersecurity professionals in executing simulated attacks to identify vulnerabilities and weaknesses within our systems and networks. Your responsibilities will include developing and implementing comprehensive testing strategies, conducting threat assessments, and ensuring the team adheres to industry best practices. You will also collaborate closely with cross-functional teams to provide insights and recommendations based on your findings, fostering a culture of security awareness throughout the organization. The ideal...

Senior Security Engineer (Team Lead)

Added 29/05/2026

We are seeking a highly skilled Senior Security Engineer (Team Lead) to join our dynamic team. In this role, you will be responsible for leading a team of security professionals to design, implement, and maintain robust security protocols and systems. You will conduct thorough risk assessments, vulnerability assessments, and penetration testing to identify and mitigate potential threats. Your expertise will be crucial in developing and enforcing security policies, procedures, and best practices across the organization. As a key leader, you will collaborate with cross-functional teams to ensure compliance with industry standards and regulations. You will mentor junior engineers, providing guidance...