Java Tech Lead

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 are now looking for an experienced Java Tech Lead with strong technical skills and solid working experience to work in new challenging outsourced projects.

Responsibilities

• Design, develop, and maintain high-quality enterprise applications using Java, Spring, Spring Boot, and Hibernate
• Lead or contribute to the migration of monolithic applications into microservices-based architectures
• Build and integrate REST and SOAP APIs for internal and external systems
• Design scalable, secure, and maintainable software solutions based on clean architecture principles
• Participate in system integration activities across complex distributed environments
• Use messaging and integration technologies such as Apache Kafka and Feign Client
• Support containerized deployments using Docker and orchestration platforms such as Kubernetes
• Work within Agile/Scrum teams to ensure timely and high-quality project delivery
• Mentor engineers, conduct code reviews, and support technical growth within the team
• Collaborate with product owners, architects, QA engineers, and stakeholders to translate business requirements into technical solutions
• Support performance analysis, troubleshooting, and optimization of enterprise applications
• Bachelor's Degree in Computer Science, Software Engineering, Information Technology, or a related field
• Strong professional experience as a Java Software Engineer, ideally in senior or technical lead roles
• Excellent knowledge of Java, Spring, Spring Boot, and Hibernate
• Hands-on experience with microservices architecture
• Experience with REST APIs and SOAP APIs
• Solid understanding of software architecture, software design, and system integration
• Experience with Oracle Database and/or PostgreSQL
• Experience with application servers such as Oracle WebLogic Server
• Experience with Docker, Kubernetes, and containerized application environments
• Knowledge of messaging or integration tools such as Apache Kafka
• Experience working with Git and Agile/Scrum methodologies
• Strong problem-solving skills and ability to work on complex enterprise systems

Nice to Have

• Experience with performance testing tools and performance monitoring
• Experience with Vaadin, RichFaces, OSGi, ZeroMQ, or similar frameworks/tools
• An attractive salary package
• Career development and growth opportunities
• An amazing private & open-office workspace in Athens #LI-Hybrid
• Continuous training via personalized seminars
• Stable and enjoyable working environment