Fluent in Greek MSc or BSc in Computer Science, Electrical/Software Engineering, Cybersecurity, or related technical discipline 3+ years of experience in product security, software evaluation, or penetration testing Proven ability to evaluate threat models, security requirements, and mitigation effectiveness Strong technical writing and documentation skills in English Excellent analytical skills and attention to detail In-depth understanding of security architecture and common system design patterns Hands-on experience performing design-level security reviews Familiarity with structured security frameworks (Common Criteria, FIPS 140, ISO 15408, OWASP ASVS, MASVS) Practical experience with security testing in diverse product environments Knowledge of authentication, authorization, identity, and secrets management technologies Proficiency in applied cryptography Ability to identify security vulnerabilities across platforms Problem solving skills, analytical thinking, and willingness to learn/grow