This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior/ Lead Security Researcher based in India. This is an opportunity to join a Product Security team focused on cutting-edge mobile cybersecurity research and advanced threat defense. You will investigate sophisticated threats across Android, iOS, and HarmonyOS Next, helping develop innovative protections for mobile applications and devices. The role combines reverse engineering, vulnerability research, penetration testing, exploitation, and mitigation techniques. You will contribute to security architecture spanning mobile devices, applications, and connected systems. As a senior contributor, you will take ownership of research projects while mentoring junior researchers and influencing technical direction. The environment is fast-moving, highly technical, collaborative, and designed for researchers who enjoy solving complex security problems.