Volton Hellenic Energy SA is seeking a Systems and Security Engineer in Athens to join their engineering team. This role is part of an up-and-coming network operator and Telecommunications Service Provider (mobile and fixed). The ideal candidate will be responsible for designing and developing supporting infrastructure for telecommunication services, implementing security policies, managing suppliers, participating in RFPs/RFQs, and monitoring system performance. Key skills include expertise in systems management, virtualization platforms, security measures, and cloud environments. The position offers a competitive remuneration package, hybrid working model, and opportunities for professional development in a Great Place to Work-Certified Company.