Senior Java Developer

Senior Java Backend Developer

Location: Kraków, Poland Work Model: Hybrid - 3 days/week

About the Role

We are seeking an experienced Senior Java Backend Developer to join a leading technology team in Kraków.

The ideal candidate will have 8+ years of hands-on experience in backend application development, with strong expertise in Java and Spring Boot.

This role offers the opportunity to work on enterprise-scale applications, designing and delivering robust, scalable, and high-performance backend solutions.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java and Spring Boot.
• Build and enhance RESTful APIs and microservices-based solutions.
• Collaborate with architects, business analysts, QA engineers, and other development teams to deliver high-quality software.
• Participate in system design discussions and contribute to technical architecture decisions.
• Write clean, maintainable, and well-tested code following best practices and coding standards.
• Troubleshoot, debug, and resolve complex technical issues.
• Optimize application performance, reliability, and scalability.
• Participate in code reviews and mentor junior team members where required.
• Contribute to CI/CD implementation and DevOps initiatives.
• Work effectively within Agile/Scrum teams.

Required Skills & Experience

• 8+ years of professional software development experience.
• Strong expertise in Java and Spring Boot.
• Experience designing and developing RESTful APIs and microservices.
• Strong understanding of object-oriented programming principles and design patterns.
• Experience with relational databases such as PostgreSQL, Oracle, or SQL Server.
• Familiarity with messaging technologies such as Kafka, RabbitMQ, or similar.
• Experience with Git, Maven/Gradle, and modern development tools.
• Understanding of CI/CD pipelines and software delivery best practices.
• Experience working in Agile/Scrum environments.
• Strong problem-solving and analytical skills.
• Excellent communication skills in English.

Nice to Have

• Experience with cloud platforms such as Azure, AWS, or GCP.
• Knowledge of containerization technologies such as Docker and Kubernetes.
• Experience with event-driven architectures.
• Financial services or enterprise-scale project experience.

Work Model

Hybrid working model with regular on-site presence 3 days/week required in Kraków, Poland.

Ideal Candidate

If you are a highly skilled Java Backend Developer with strong Spring Boot expertise and a passion for building scalable enterprise applications, we would love to hear from you.