Java Backend role
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Summary
Senior Java backend engineer in Kraków designing cloud-native, event-driven services with REST, Kafka, Kubernetes and Helm, while mentoring juniors and contributing to Ethereum-based blockchain and digital-asset solutions. Collaboration with stakeholders happens in English.
- Design and develop reliable, scalable cloud-native Java applications.
- Build RESTful services and Kafka-based event-driven solutions.
- Deploy and support applications on Kubernetes using Helm.
- Lead implementations and contribute to secure, high-quality code.
- Support the development team in diagnosing and resolving application issues.
- Mentor junior developers and provide code-review feedback.
- Contribute to blockchain and digital-asset solutions, particularly Ethereum-related projects.
- Collaborate with technology and business stakeholders in English.
- Java: At least 5 years of experience in Java.
- Cloud-Native Distributed Systems: Expertise in developing cloud-native applications for distributed systems using RESTful web services and Kafka-based event-driven architectures.
- Kubernetes and Helm: Hands-on experience with Kubernetes and Helm.
- Security: Strong attention to detail and security awareness.
- Technology Trends: Interest in cloud computing, DevOps practices, blockchain technologies, and digital assets.
- Communication: Excellent communication skills and the ability to interact effectively with colleagues in English.
Preferred Skills — Good to Have
- Engineering Leadership: Ability to lead implementations, conduct code reviews, and mentor junior developers.
- Blockchain and DLT: Experience contributing to distributed-ledger projects, particularly Ethereum-based solutions.
- Digital Assets: Understanding of tokenization or digital-asset platforms.
- Spring Boot: Experience with Spring Boot and related Spring components.
- Data and Persistence: Experience with JPA or Hibernate, SQL, and relational databases.
- Automated Testing: Experience with JUnit, Mockito, and integration testing.