Senior Java Backend Developer – Cloud and Microservices Expertise

Kick-start innovation in banking technology — develop scalable, secure, and high-performing microservices!

Krakow-based opportunity with hybrid work model (up to 3 remote days per week).

As a Senior Java Backend Developer – Cloud and Microservices Expertise, you will be working for our client, a leading financial institution dedicated to delivering state-of-the-art messaging solutions to enhance customer engagement. Your expertise will drive the design and development of distributed systems, supporting the modernization and standardization of critical messaging platforms. Join us and contribute to shaping the future of banking communication technology.

Your main responsibilities:

• Applying your technical expertise to develop high-quality applications/systems in line with requirements and standards.
• Collaborating within a multi-disciplinary, Agile product team to design and build distributed microservices using modern technology stacks.
• Defining and maintaining technical quality standards across platforms.
• Building strong decision-making and problem-solving skills within your area of expertise.
• Producing efficient, maintainable code that aligns with business needs and technical dependencies.
• Conducting thorough unit testing to ensure software performance and reliability.
• Challenging code and design quality to uphold industry standards and project excellence.
• Contributing to automation test coverage and quality assurance processes.
• Maintaining effective communication with team members and stakeholders.
• Promoting innovative technologies and mentoring engineering colleagues.

You’re ideal for this role if you have:

• Minimum of 5 years’ senior experience in Java, Spring Boot, and Kubernetes.
• Practical experience working with Cloud platforms, especially AWS.
• Strong knowledge of CI/CD tools such as GitHub, Jira, Jenkins, Maven, and Groovy.
• Expertise in API design standards: Swagger, OpenAPI 3.0, REST, JSON, Microservices architecture.
• Knowledge of authentication and authorization via OAuth 2.0, with experience using Kong API Gateway.
• Familiarity with Agile testing methodologies, particularly TDD, and extensive Agile/Scrum development experience.
• Ability to work closely with business stakeholders to translate functional requirements into robust technical solutions.
• Strong problem-solving capability with a focus on innovative, scalable solutions.

It is a strong plus if you have:

• Experience with additional cloud services or certifications.
• Knowledge of DevOps practices beyond the core technologies listed.

Language Required for the role:

• English – Communicative proficiency essential for effective collaboration and stakeholder engagement.

Eligibility for the role:

• Only candidates with an existing legal right to work in Europe will be considered for this role.

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

Tech stack

• Java
• Spring Boot
• Kubernetes
• AWS
• Microservices architecture
• REST API design
• CI/CD (Jenkins, GitHub, Maven)
• OAuth 2.0
• TDD / Agile Testing
• DevOps practices