QUALCO, a leading Fintech solutions provider with over 20 years of experience, is seeking a Senior Software Engineer to join their Integrated Services department. This role offers an exciting opportunity to work on the development of a new product within a complex distributed system environment. The position involves working with cutting-edge technologies including Java, Kubernetes, and Kafka, while focusing on API development, integration, and automated testing. The ideal candidate will have 4+ years of experience in software engineering, strong expertise in Java or C#/.Net, and experience with modern development practices including Docker and CI/CD. The company offers a comprehensive benefits package including competitive compensation, health insurance, flexible working arrangements, and various wellness perks. Located in Athens, Greece, this hybrid role provides an excellent opportunity to work with a global team in a human-centered culture that values diversity and professional growth. The position offers extensive learning opportunities through mentoring, coaching, and personalized development plans, making it an ideal role for a senior engineer looking to make significant contributions to enterprise-scale financial technology solutions.