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September 15, 2026

Senior Java Developer

Senior • On-site

Kraków, Poland

Quick Facts

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

Description

We are seeking an experienced Senior Java Backend Developer to join a technology team in Kraków. You will design and deliver robust, scalable, high-performance backend solutions for enterprise-scale applications using Java and Spring Boot.

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

Requirements

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

Benefits

Work on enterprise-scale applications building scalable, high-performance backend solutions
Hybrid working model with regular on-site presence 3 days/week in Kraków, Poland

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

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