Thessaloniki, Central Macedonia, Greece Hybrid

I KNOW HOW S.A is hiring a Java Developer

Responsibilities

  • Design and maintain backend services and microservices in Java using Spring Boot and related Spring frameworks such as Spring Data, Spring Security, and Spring Cloud.
  • Develop and consume RESTful APIs and event-based systems, applying clean architecture and domain-driven design principles when suitable.
  • Integrate with internal and external systems through REST, messaging platforms like Azure Service Bus, Kafka, or Pub/Sub, and batch processing interfaces.
  • Work with both relational and non-relational databases, writing optimized queries and data persistence logic using JPA and Hibernate.
  • Package services into containers using Docker and deploy them to Azure Kubernetes Service (AKS).
  • Help build and maintain CI/CD pipelines using tools such as Azure DevOps or GitHub Actions, including automated testing and deployment stages.
  • Create thorough unit, integration, and contract tests to ensure system reliability and correctness.
  • Take part in code reviews, architectural discussions, and design meetings, promoting code quality, performance, and security.
  • Share responsibility for supporting live systems, including monitoring, alerting, and responding to incidents.
  • Work closely with quality assurance, product management, and architecture teams in an Agile/Scrum environment, helping to estimate and plan tasks across sprints.

Responsibilities

  • Design, develop, and maintain Java backend services and microservices using Spring Boot and the broader Spring ecosystem (Spring Data, Spring Security, Spring Cloud).
  • Build and consume RESTful APIs and event-driven services, applying clean architecture and domain-driven design where appropriate.
  • Implement integrations with downstream systems and external partners using REST, messaging (Azure Service Bus, Kafka, or Pub/Sub), and batch interfaces.
  • Work with relational and non-relational data stores, writing efficient queries and persistence code with JPA/Hibernate.
  • Containerise services using Docker and deploy to Azure Kubernetes Service (AKS).
  • Contribute to CI/CD pipelines (Azure DevOps and/or GitHub Actions), with automated build, test, and deployment steps.
  • Write comprehensive unit, integration, and contract tests.
  • Participate in code reviews, design discussions, and architecture sessions; advocate for clean code, performance, and security best practices.
  • Support production services on a shared rotation, contributing to monitoring, alerting, and incident response.
  • Collaborate with QA, product, and architecture teams in Agile/Scrum delivery; estimate and break down work effectively across sprints.
About company
I KNOW HOW S.A

We craft custom automation systems and advanced software solutions. Our expertise lies in creating cyber-physical systems that seamlessly integrate physical and computational components. With a human-centric approach, tailored for both public and private sectors, our solutions are designed to enhance human capabilities, streamline operations, and foster business growth.

Whether you need to amp up your security, develop cutting-edge robotics, or create automation systems that will turn heads, we know how to tailor innovation to meet your specific needs. Let’s innovate together!

The company is part of IKH Group, which spans enterprise applications, medical imaging platforms, autonomous robotics solutions, and defense & homeland security. It has evolved from a small company into a multimillion-euro enterprise, delivering bespoke solutions across Greece and abroad.

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Job Details
Category backend
Posted a month ago