Security Engineer - Product

Added 25/08/2026

We are seeking a Security Engineer - Product to help build secure, resilient, and trustworthy products from design through to release. You will work closely with software engineers, product managers, architects, and platform teams to identify security risks early and embed effective controls throughout the development lifecycle. The role will involve contributing to threat modelling, security architecture reviews, secure coding practices, vulnerability management, and the continuous improvement of product security standards. You will assess applications, APIs, cloud services, and supporting infrastructure; investigate security findings; and help teams prioritise and remediate risks. Responsibilities will include conducting technical security reviews, supporting penetration...

Network Security Researcher

Added 09/10/2026

We are seeking a Network Security Researcher to investigate emerging threats, assess vulnerabilities, and develop practical solutions that strengthen the security of complex networked environments. You will monitor the evolving threat landscape, analyse attack techniques, and translate research findings into actionable recommendations for defensive operations, engineering teams, and technical stakeholders. The role involves balancing independent research with collaborative delivery in a fast-moving environment where curiosity, sound judgement, and clear communication are highly valued. Your responsibilities will include researching network protocols, intrusion methods, malware behaviour, and novel exploitation techniques; designing and conducting security experiments in controlled environments; and developing proof-of-concept tools,...

Security Researcher

Added 08/10/2026

We are seeking a Security Researcher to investigate emerging threats, identify vulnerabilities, and develop practical security improvements across a range of technologies and environments. The successful candidate will combine strong analytical skills with hands-on technical expertise to assess attack methods, validate security controls, and communicate findings clearly to both technical and non-technical audiences. This role offers the opportunity to contribute to meaningful security initiatives in a collaborative, research-focused environment. Responsibilities will include researching current and emerging cyber threats, vulnerabilities, malware, exploitation techniques, and defensive technologies. You will design and execute proof-of-concept demonstrations, conduct vulnerability assessments, analyse security incidents, and support...

Offensive Security Researcher

Added 22/09/2026

We are seeking an Offensive Security Researcher to identify, investigate, and help mitigate security weaknesses across applications, infrastructure, devices, and emerging technologies. You will conduct authorised penetration tests, vulnerability research, red-team activities, and security assessments to uncover realistic attack paths and evaluate the effectiveness of existing controls. The role involves researching new exploitation techniques, developing proof-of-concept code in controlled environments, analysing vulnerabilities, and translating technical findings into practical recommendations. You will collaborate with software engineers, security specialists, infrastructure teams, and other stakeholders throughout the assessment lifecycle. Responsibilities include defining test objectives and scope, conducting reconnaissance, performing manual and automated testing,...

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...

AI Security Researcher/Research Engineer

Added 08/09/2026

We are seeking an AI Security Researcher/Research Engineer to investigate emerging threats, vulnerabilities, and defensive techniques across artificial intelligence and machine learning systems. You will help assess the security, reliability, and resilience of models, data pipelines, agents, and supporting infrastructure, translating research findings into practical improvements. This role is suited to someone who enjoys working across theoretical research, hands-on experimentation, and engineering implementation in a fast-changing technical environment. Your responsibilities will include designing and executing evaluations of model behaviour, adversarial robustness, privacy, data poisoning, prompt injection, model extraction, misuse, and other relevant attack or failure modes. You will develop proof-of-concept...

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...

SWE - User Land Security Researcher, SEAR (Early Career)

Added 01/09/2026

We are seeking an early-career Software Engineer and User-Land Security Researcher to help identify, analyse, and address security weaknesses in user-space software and systems. You will work with experienced security engineers and researchers to investigate vulnerabilities, develop proof-of-concept demonstrations, and improve the resilience of products and services. This role is suited to someone who enjoys understanding how software works at a low level and applying that knowledge to practical security problems. Your responsibilities will include performing vulnerability research across applications, libraries, and operating-system components; analysing source code, binaries, crash data, and system behaviour; and developing tools, scripts, and automated techniques...

Junior Cyber Security Researcher - September 2027

Added 26/08/2026

We are seeking a Junior Cyber Security Researcher to join a forward-looking security team from September 2027. This entry-level role is suited to someone with a strong interest in cyber security, threat research and emerging technologies, who is keen to develop practical experience in a collaborative environment. You will support investigations into new and evolving threats, contribute to security research projects and help translate technical findings into clear, actionable intelligence. Your responsibilities will include monitoring threat activity, researching vulnerabilities, malware, attack techniques and relevant security trends, and assisting with the assessment of potential risks. You will help gather, validate and...

Security Researcher

Added 19/08/2026

We are seeking a talented and motivated Security Researcher to join our dynamic team. In this role, you will be responsible for identifying, analyzing, and mitigating security vulnerabilities across various platforms and systems. You will conduct in-depth research on emerging threats and trends in cybersecurity, providing valuable insights to enhance our security posture. Your expertise will play a crucial role in developing effective security strategies and solutions that protect our digital assets and ensure compliance with industry standards. The ideal candidate will have a solid understanding of security protocols and technologies, along with hands-on experience in vulnerability assessment, penetration testing,...

Senior Cyber Vulnerability Researcher

Added 13/10/2026

We are seeking a Senior Cyber Vulnerability Researcher to identify, analyse, and help mitigate security weaknesses across applications, infrastructure, operating systems, networks, and emerging technologies. You will lead vulnerability research activities from initial discovery through technical validation, risk assessment, responsible disclosure, and remediation support. The role requires strong analytical ability, sound judgement, and the confidence to communicate complex security findings to both technical and non-technical stakeholders. Key responsibilities include conducting proactive vulnerability research, reviewing source code and software behaviour, developing proof-of-concept exploits, and reproducing reported weaknesses in controlled environments. You will perform threat modelling and exploitability analysis, assess the potential...

Researcher, Online Threat Intelligence

Added 09/10/2026

We are seeking a Researcher, Online Threat Intelligence to investigate emerging online threats, monitor hostile activity, and produce clear, actionable intelligence for internal stakeholders. The successful candidate will analyse open-source information across websites, social media, forums, messaging platforms, dark web sources, and other relevant channels. You will identify patterns, assess credibility, connect related entities and events, and communicate findings in a concise and well-supported manner. Key responsibilities include conducting structured online research; tracking threat actors, campaigns, narratives, and indicators of compromise; maintaining accurate research notes and intelligence records; and preparing written reports, briefings, alerts, and threat assessments. You will contribute...

Cybersecurity Threat Researcher (Position located in Cheltenham, United Kingdom)

Added 09/10/2026

We are seeking a Cybersecurity Threat Researcher to join a specialist team based in Cheltenham, United Kingdom. This role will focus on researching, analysing and communicating emerging cyber threats, helping to improve understanding of the evolving threat landscape and supporting the development of effective defensive strategies. You will investigate threat actors, campaigns, malware, vulnerabilities and attack techniques using a combination of open-source intelligence, technical analysis and structured research methods. Your responsibilities will include monitoring global cyber activity, identifying trends and indicators of compromise, analysing malicious files, domains and infrastructure, and producing clear, evidence-based intelligence reports for both technical and non-technical...

Operational Cyber Researcher

Added 06/10/2026

We are seeking an Operational Cyber Researcher to investigate emerging cyber threats, assess their potential impact, and translate technical findings into practical security improvements. You will monitor threat activity, analyse malicious infrastructure, study attacker tactics and techniques, and contribute to the development of actionable intelligence for operational and strategic decision-making. The role requires curiosity, sound judgement, and the ability to work confidently with incomplete or rapidly changing information. Your responsibilities will include conducting research across open, technical, and specialist intelligence sources; identifying indicators of compromise and patterns of malicious behaviour; and producing clear written assessments, briefings, and research reports for...

Embedded Systems Vulnerability Researcher

Added 21/09/2026

We are seeking an Embedded Systems Vulnerability Researcher to identify, analyse, and help mitigate security weaknesses in embedded devices, firmware, and connected products. You will investigate vulnerabilities across low-level software and hardware interfaces, develop proof-of-concept exploits, and assess the real-world impact of identified issues. The role involves working across the full research lifecycle, from initial discovery and reverse engineering through technical reporting, remediation guidance, and validation. Your responsibilities will include performing static and dynamic analysis of firmware, operating systems, bootloaders, drivers, and embedded applications; examining communication protocols and attack surfaces; and using debugging, emulation, fuzzing, and binary analysis techniques to...