Senior Java Software Engineer

iKnowHow Group is a dynamic, international technology company with 24+ years of experience and a team of 300+ talented professionals delivering innovative technology solutions across Energy, Telecommunications, Banking & Financial Services, and the Public Sector. Through its specialized subsidiaries, it brings domain expertise in areas such as Health and Robotics—blending deep industry knowledge with advanced, future-ready technologies. At its core, iKnowHow S.A. delivers end-to-end project development - both internal and client-facing - turning strategy into scalable, real-world solutions. Our portfolio spans Data & AI platforms, enterprise integration, cloud-native applications, and large-scale digital transformation initiatives, enabling leading organizations across the public and private sectors to evolve and grow. We’re looking for curious, driven people who want to create impact through technology and grow with us. We are now looking for an experienced Senior Java Software Engineer with strong technical skills and solid working experience to join our internal software team. Responsibilities: Development of demanding tasks of the projects Familiarity with Waterfall implementation methodologies Transform requirements into functionalities Ensure the alignment of the solution with the client's needs and especially with the architecture team Implementation of integrations with other applications and/or developed modules Assist with deployment and configuration management Bachelor in Computer Science, Information Technology or related field Minimum of 5 years in hands-on Java development Very good knowledge of modern Java versions (11+) Experience with Spring Boot and Microservices architectures Strong proficiency with Spring Boot, Spring Security, Spring Data and RESTful API design Knowledge of Docker, Kubernetes or cloud environments Hands-on experience with JPA/Hibernate, databases (PostgreSQL), and Maven Familiarity with microservices architecture, service discovery (Eureka), and API gateways Nice to have: Former experience in technical lead role or mentoring/coaching Career development and growth opportunities An amazing private & open-office workspace in Athens Medical plan and life insurance for you and your family Flexible hybrid working model, working both from the office & remote #LI-Hybrid Continuous training & learning opportunities via personalized seminars The opportunity to work in a diverse environment with talented colleagues