Location: Delft, The Netherlands. Evaluate the security of mobile device solutions (e.g., mobile payment, content protection, biometric authentication). Examine software‑based security on Android, embedded Linux, or iOS through analysis, code review, and practical penetration testing using reverse engineering techniques. Participate in R&D to develop/replicate attacks and improve evaluation efficiency. Hard skills: degree (CS or related fields) or proven software security experience; knowledge of Android/Linux/iOS, Java/C/C++/assembly, ARM/x86; reverse‑engineering experience; understanding of authentication, crypto, vulnerabilities, countermeasures. Soft skills: collaborative, persistent, creative, eager to learn, strong English writing/communication.