Vulnerability Researchers / Security Researchers

About project

We are a Barcelona-based R&D center seeking 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.