Java Developer

iKnowHow Group is a leading Software & Robotics Solutions group of companies operating internationally for over 24 years, with 300+ professionals delivering innovative technology solutions across Energy, Telecommunications, Banking & Financial Services, and Public Sector industries. The group is structured into specialized subsidiaries, each focused on distinct technology domains and market verticals.

We are looking for a mid-level Java Developer to work in new challenging outsourced projects.

You will build microservices and APIs on a modern Java stack, deployed primarily on Microsoft Azure with selected workloads on GCP and AWS, working in Agile teams that own services end-to-end — from design through production support.

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.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related technical field.

• 3–5 years of professional Java software development experience, including production-grade services in a cloud environment.

• Proven experience delivering in Agile/Scrum teams.
• Strong Java skills, with practical experience in Spring Boot and the wider Spring ecosystem.

• Solid understanding of REST API design, microservices patterns, and distributed systems concepts.

• Hands-on experience with Docker and Kubernetes.

• Working knowledge of Microsoft Azure services.

• Experience with relational databases and JPA/Hibernate.

• Familiarity with messaging and streaming platforms.

• Comfortable with Git, Maven or Gradle, and CI/CD pipelines.

• Awareness of security fundamentals and observability practices (logging, metrics, distributed tracing).

Nice to have:

• Experience in insurance, banking, or another regulated industry.

Benefits

• An attractive salary package

• Private health insurance plan

• Career development and growth opportunities

• Continuous training via personalized seminars

• An amazing private & open-office workspace in Athens #LI_Hybrid
• Stable and enjoyable working environment