Vulnerability Researchers / Security Researchers

About you You are a hands-on Vulnerability Researcher or Security Researcher with experience discovering, analyzing, and exploiting vulnerabilities in complex systems. You have a strong understanding of reverse engineering, OS internals, and modern exploitation techniques, and can develop exploits, proof-of-concept code, and research tools to validate your findings. You are proactive, technically curious, and able to conduct vulnerability research independently in a full-time remote environment. About the project We are a Barcelona-based R&D center looking for Vulnerability Researchers / Security Researchers to join our team. The role focuses on hands-on vulnerability research, including finding and exploiting vulnerabilities in complex systems such as browsers, kernels, mobile and desktop operating systems. We offer full-time remote work as well as relocation opportunities to Barcelona. Flexible working hours are supported depending on productivity and time zones. Your area of responsibility Detect, analyze, and exploit vulnerabilities; Conduct vulnerability research across browsers, kernels, mobile and desktop operating systems, and other complex software; Understand the technical details of vulnerabilities and assess their real impact; Develop exploits, proof-of-concept code, scripts, and software modules to validate vulnerabilities; Perform reverse engineering and binary analysis as part of vulnerability research; Reverse-engineer security patches to better understand vulnerabilities; Use fuzzing and other research techniques to discover vulnerabilities; Effectively communicate vulnerability findings and their technical impact; Assist in the development of tools for vulnerability and security research. Skills and requirements Proven hands-on experience in vulnerability research and vulnerability exploitation; Experience in exploit development; Experience in finding vulnerabilities in complex systems; Experience with reverse engineering; Knowledge of OS internals; Knowledge of modern exploitation techniques; Experience researching at least one of the following areas: browsers, kernels, mobile OSes, desktop OSes, or embedded systems; Experience with platforms such as Windows, Linux, macOS, iOS, or Android; Ability to work independently in a remote environment; Availability for full-time work. Will be a plus Published CVEs or other proven records of discovered vulnerabilities; Experience finding and exploiting vulnerabilities in browsers or OS kernels; Experience with fuzzing; Participation in CTFs, security competitions, or security conferences; Bug bounty or independent vulnerability research experience; Published security research, technical write-ups, PoCs, or research tools; Offensive security background; Academic degree in Computer Science, Mathematics, or Physics. We offer A real opportunity to influence the product, architecture, and technical decisions; Direct communication with C-level management, without unnecessary bureaucracy; Remote-first environment; Long-term and enjoyable cooperation; 20 paid working days of vacation per year; 5 paid undocumented sick days; Official public holidays as days off; Personal legal support; English classes; Team-building events and a friendly, supportive atmosphere.