Mellon Technologies, established in 1994 in Athens, is a leading provider of specialized technology solutions and business process outsourcing services. They are currently seeking a Senior Android/iOS Engineer to join their team in a hybrid work environment. The role focuses on developing and maintaining financial payment-related applications, particularly in the SoftPOS domain. The ideal candidate will work with Java and Kotlin, integrating payment solutions with financial back-end systems. This position offers an opportunity to work in the growing fintech sector while being part of an international, multicultural environment with access to leading-edge technology. The role requires strong mobile development experience, architectural knowledge, and the ability to improve application design over time. With continuous training opportunities and a focus on technological advancement, this position presents an excellent opportunity for career growth in the financial technology sector.