Java Tech Lead

About iKnowHow Group

iKnowHow Group is a dynamic, international technology company with over 24 years of experience and a team of 300+ professionals delivering innovative technology solutions across Energy, Telecommunications, Banking & Financial Services, and the Public Sector. Through specialized subsidiaries, iKnowHow brings domain expertise in Health and Robotics, blending deep industry knowledge with advanced, future-ready technologies. iKnowHow S.A. focuses on end-to-end project development, turning strategy into scalable, real-world solutions spanning Data & AI platforms, enterprise integration, cloud-native applications, and large-scale digital transformation initiatives.

About the Role

We are seeking an experienced Java Tech Lead with strong technical skills and solid working experience to join our team for new, challenging outsourced projects. You will play a key role in designing, developing, and maintaining complex Java applications.

Responsibilities:

• Design, develop, test, and maintain complex Java applications using Spring Boot, Spring Batch, and Vaadin framework (version 14 and above).
• Develop robust, scalable, and efficient web services using REST and SOAP protocols.
• Configure and deploy Java applications on JEE application servers such as Websphere, Weblogic, and JBoss.
• Design and implement database solutions using RDBMS, preferably DB2.
• Collaborate with the development team to ensure high-quality code and adherence to coding standards.
• Participate in code reviews to ensure code is maintainable, scalable, and efficient.
• Troubleshoot and debug complex issues in Java applications.
• Work closely with the QA team to ensure the application meets required quality standards.
• Participate in technical discussions and provide input on application design and architecture.

Requirements:

• Bachelor’s Degree in Computer Science, Software Engineering, Information Technology, or a related field.
• At least 7 years of experience in Java development (knowledge of Java 8 and above features).
• Experience working on projects using Spring Boot and/or Spring Batch.
• Experience with JEE application servers, such as Websphere, Weblogic, and JBoss.
• Experience with Vaadin framework (version 14 and above) and web services (REST, SOAP).
• Experience with RDBMS, preferably DB2, and version control systems, such as GIT or SVN.
• Experience with CI/CD using Jenkins.
• Strong understanding of the Java programming language and its ecosystem.
• Excellent problem-solving skills and attention to detail.
• Strong communication and collaboration skills.

Nice to Have:

• Experience in the banking industry.
• Familiarity with modular design, microservices, and/or PL/SQL.
• Familiarity with Quartz Job Scheduler, messaging communication using MQ and/or JMS, and technical coordination of small teams.

Benefits:

• 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.