Jobs Companies iKnowHow S.A. Software Engineer Java / Spring Batch

About this Software Engineer Java / Spring Batch role at iKnowHow S.A.

iKnowHow S.A. · Gerakas, Attica, Greece

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)
  • Ability to analyze, debug, and enhance existing codebases independently

Nice to have:

  • Experience with AI-assisted development tools
  • Exposure to event-driven architectures (Kafka is a plus)

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
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About iKnowHow S.A.

At IKH we solve hard problems. We provide custom-built automation solutions to industry and software solutions to the public and private sector. We can acquire your data, communicate, store and process it to produce insights and present them in a responsive and intuitive manner. Our tailor-made services culminate in cyber-physical systems where the physical and computational elements are intertwined to augment human capabilities.

Our mechanical and electrical engineers have brought to life close to twenty robotic solutions for the off-shore, oil & gas, nuclear, and the wind power industry. We have designed and engineered autonomous robots to perform ultrasonic testing of wind turbine blades or to replace tracked trenching machines operating in the subsea environment. More than 40 large scale web development and IT projects for private and public institutions, local subsidiaries of international organizations, and national authorities have been undertaken and successfully delivered by our software development teams.

Over the past six years, we have raised our sales six-fold and established offices in Luxembourg and London. Our headquarters are in downtown Athens (Neo Psyhiko) and our robotic team is headquartered in the outskirts of greater Athens.

At IKH we hire the best & brightest. We believe that talented individuals give credence to the maxim ‘the whole is greater than the sum of its parts’ and we strive to foster an environment where freedom, responsibility, innovation, and self-discipline flourishes. After all, a great workplace is synonymous to stunning colleagues, where employees don’t wait to be told what to do and behave like owners. Job candidates can seek for opportunities in four areas:

  • Robotics & IoT: A world-class team of electrical, mechanical, and software engineers with deep expertise in mechanical design and control, in data-driven intelligence, and in embedded systems. We design and engineer robotic solutions and our machines can sense, act, and adapt to demanding environments. We collaborate with our clients’ team, we ideate, we prototype and if need be we solicit funding from public or private sources.
  • The Digital Government team identifies, articulates, and analyzes business needs, translates them into specs, and implements fully the IT solution. We work with the private and public sector on process automation and optimization and on workflow and reporting solutions and when needed we apply advanced methodologies like lean and six sigma. We can engineer business intelligence and cognitive enterprise platforms to augment human decision making and we can ensure an organization’s Total Quality Compliance through an integrated and ISO-compliant management system.
  • EU Institutions Business Unit (EUI): Our Luxembourg office markets our digital government expertise primarily to EU institutions. Large government ought to adjust to and reap the benefits from the omni-channel, omni-content era. Our software development team has the experience and the caliber to help governments and international organizations embrace interoperability and openness and present their content in a device agnostic way.
  • Healthcare IT: evorad© is our RIS/PACS product suite. It is designed to cover a radiology department's needs from the moment the patients walk into the hospital until the moment they check out with a CD containing image files and their diagnostic report in hand. evorad© is the premier PACS solution of Greece’s National Health System and is used not only to process thousands of examinations daily but also as a teaching tool in most University Hospitals and Medical Schools. With over 10 years’ track record in the local market, evorad© has recently set up an office in Saudi Arabia with the mandate to market the PACS solution in the wider MENA region.

IKH is committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, and gender identity.

More information on our company can be found at http://www.iknowhow.com/ and at our YouTube channel.

See all jobs at iKnowHow S.A. →

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