Senior Java Developer – Microservices

Talanto; Wrocław; Hybrid; PLN 211,000 - 258,000; Full time

Job summary

Talento? Talanto is hiring a Senior Java Developer in Wroclaw with remote flexibility for energy infrastructure projects. You will develop and evolve critical backend systems, focusing on microservices and real-time data integration.

You will lead the backend team, define technical tasks, mentor colleagues, and drive the Connector 2.0 stack using Java, Spring Boot, Kafka, and Camel. Strong Oracle 19c, Hibernate, GitLab, Maven, JUnit, and Mockito expertise are required, along with Polish and

Qualifications

• 5+ years Java programming with Java 8+
• 3+ years with Java 17+
• 2+ years leading backend teams
• Expert Kafka and Camel
• Expert Spring Boot and microservices
• Oracle 19c and Hibernate
• GitLab, Maven, JUnit, Mockito
• Unicorn (ECP/EDX) APIs
• Strong design patterns and delivery discipline
• Polish and English communication

Responsibilities

• Define and support backend tasks with best practices
• Lead evolution of technology stacks for Connector 2.0
• Mentor teams and drive adoption of new tech
• Develop and maintain scalable backend architecture
• Implement features and tests delivering reliable software

Skills

Java

Java 17+

Spring Boot

Kafka

Camel

Microservices

Oracle 19c

Hibernate

GitLab

Maven

JUnit

Mockito

Polish/English

Tools

Linux

Job description

Python Java Linux Spring Boot Spring Kafka 18,900 – 23,100 PLN

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Empower the future of energy infrastructure — lead the evolution of microservices and real-time data integration!

Wroclaw - based opportunity with remote work flexibility.

As an Senior Java Developer, you will be working for our client in the energy sector, focusing on developing and advancing critical backend systems. You will contribute to the design, implementation, and mentoring of high-performance microservices, leveraging cutting-edge technologies to support enterprise-grade solutions. This role offers the chance to influence technological direction and grow your expertise in a dynamic environment.

Your main responsibilities:

• Define and support technical tasks within the backend development team, ensuring best practices and high-quality delivery.
• Recognize, verify, and plan the evolution of technology stacks for the Connector 2.0 project.
• Lead the implementation of new technologies across project teams, providing training and mentorship to team members.
• Develop, enhance, and maintain system architecture in the backend layer, ensuring scalability and robustness.
• Program functionalities and conduct tests to deliver reliable software solutions, adhering to deadlines and specifications.

You’re ideal for this role if you have:

• Minimum 5 years of professional Java programming experience (Java 8+), with at least 3 years working with Java 17+
• Extensive experience leading technical teams in backend development for 2+ years
• Strong expertise with Apache Kafka and Apache Camel (Expert level)
• Deep knowledge of Spring Boot (Expert level) and microservices architecture in containerized environments
• Proficiency with relational databases such as Oracle DB 19c and ORM tools like Hibernate
• Familiarity with version control systems (GitLab), build tools (Maven), and testing frameworks (JUnit, Mockito)
• Experience working with the Unicorn ecosystem (ECP/EDX) APIs and channels
• Solid understanding of design patterns, software responsibility, and timely task execution
• Ability to work independently, collaborate effectively in teams, and communicate clearly in Polish and English (Communicative level)

It is a strong plus if you have:

• Knowledge of RDBMS Oracle and Python
• Basic understanding of Linux systems

Language Required for the role:

• Polish (good command)

Eligibility for the role:

• Not required to have existing legal right to work in the European Union; open to candidates eligible to work remotely in Europe.