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 a talented and skilled Software Engineer Java / Spring Batch to join our team and contribute to the delivery of complex, large-scale outsourced projects.
Responsibilities:
- Design and develop Spring Batch applications for large-scale data and transaction processing
- Build and optimize batch jobs for high-volume processing and reconciliation workflows
- Develop ETL and data transformation pipelines integrated with core banking and enterprise systems
- Transform business and technical requirements into robust, scalable functionalities
- Ensure alignment of solutions with architectural standards and client requirements
- Implement integrations with, core banking systems, external payment networks (e.g., SWIFT, DIAS), databases and file-based interfaces, internal enterprise services and reporting platforms.
- Implement and maintain scheduling, monitoring, restartability, and fault-tolerant mechanisms
- Participate in the modernization of legacy batch systems into modular, scalable architectures
- Collaborate closely with architects, analysts, DevOps, and integration teams
- Support deployment processes and configuration management activities
- Contribute to performance optimization and troubleshooting of batch execution flows
Requirements
- 3–5 years of experience in Java development
- Strong expertise in Spring Boot and Spring Batch
- Solid understanding of batch processing concepts, transaction management, error handling, and restart/recovery mechanisms
- Experience with performance optimization for high-volume processing
- Proficiency in SQL and relational databases (Oracle/PostgreSQL)
- Hands-on experience with file processing (CSV, XML, fixed-width formats)
- Familiarity with microservices architecture, REST APIs, and integration patterns
- Understanding of distributed systems and data consistency
- Experience with scheduling tools (e.g., Control-M)
- Familiarity with Git, CI/CD pipelines, and container platforms (OpenShift/Kubernetes)
- Exposure to event-driven architectures (Kafka is a plus)
- Ability to analyze, debug, and enhance existing codebases independently
Nice to have:
- Experience with AI-assisted development tools
Benefits
- Flexible hybrid working model, working both from the office & remote #LI-Hybrid
- Career development and growth opportunities.
- Medical plan and life insurance for you and your family.
- Continuous training & learning opportunities via personalized seminars.
- The opportunity to work in a diverse environment with talented colleagues
Skills Required
- 3-5 years of experience in Java development
- Strong expertise in Spring Boot and Spring Batch
- Solid understanding of batch processing concepts
- Experience with performance optimization for high-volume processing
- Proficiency in SQL and relational databases
- Hands-on experience with file processing formats
- Familiarity with microservices architecture and REST APIs
- Experience with scheduling tools
- Familiarity with Git, CI/CD, and container platforms
- Ability to analyze, debug, and enhance existing codebases
What We Do
iKnowHow is a Greek technology firm based in Athens and currently employing more than 120 engineers and IT professionals. The company was founded in 2002 and has since grown rapidly holding nowadays a significant market share in Greece, Cyprus and Europe. For almost two decades, the company has been offering a wide range of tailor made software solutions and specialized ICT strategy consulting services as well as building complex enterprise applications with emphasis on Digital Government, Business Automation, Information Security, Digital Transformation, e-Health and Industrial Automation solutions. The past years the company has significantly increased in size and financial yield, reaching almost 120 employees. IKH is organized into three business units: digital government, healthcare, and robotics. Our longstanding partnership with IBM and our knowledge of Open Source technologies has allowed us to complete significant ICT work for local and international organizations. IKH Innovation, our robotics arm, is a world-class team of robotics and software engineers with expertise in mechanical design, embedded control, data-driven intelligence and mobile robots. IKH Innovation designs and builds tailor-made robotic solutions capable of performing in demanding environments. evorad™ is our comprehensive RIS / PACS suite designed to cover a radiology department's needs from the moment patients walks in to the moment they walk out with their examination and their digital diagnostic report in hand. evorad™ has become the premier PACS solution of Greek public hospitals, used not only to process thousands of examinations per day, but also as the main teaching tools in medical schools and university hospitals.
