Back End Developer

K&K Talents is an international recruiting agency that has been providing technical resources in the European region since 1993. This position is with one of our clients in Poland who is actively hiring candidates to expand their teams.

Position : Java Backend Developer

Location : Wroclaw, Poland (Hybrid)

Type : UOP Role

Responsibilities:

• Lead the development of web applications using the Java/Spring stack.

• Handle requirements, decompose user stories, and manage middle/junior engineers.

• Understand and implement scrum team roles and agile development methodology.

• Design and develop distributed systems and software architecture.

• Refactor code, perform performance and memory tuning.

• Manage build systems (Maven or Gradle), including dependency management, build lifecycle, release, and version management.

• Utilize Git branching models (git flow, GitHub flow) for version control.

• Work with frameworks such as Spring, ORM, messaging, security, batch, and integration.

• Design and manage databases, ensuring consistency models, SQL, and distributed transactions.

Implement microservice architecture patterns and best practices, including communication patterns (HTTP, messaging, gRPC, CQRS).

• Design APIs following best practices, including API First approach.

• Solve complex algorithms and problems efficiently.

Requirements:

• Minimum 5 years of commercial experience developing web applications using the Java/Spring stack- obligatory requirement

• Proven team lead experience, including requirements handling, decomposing user stories, and managing middle/junior engineers.

• Strong understanding of scrum team roles and agile development methodology.

• Extensive DevOps experience, including creating and improving CI/CD pipelines in cloud environments, networking, Unix, and understanding Kubernetes and Docker registries.

• Expertise in distributed systems design and software architecture.

• Proficiency in refactoring, performance, and memory tuning.

• Experience with build systems (Maven or Gradle): dependency management, build lifecycle, release, and version management.

• Knowledge of Git branching models (git flow, GitHub flow).

• Excellent knowledge of Spring Framework and related technologies (ORM, messaging, security, batch, integration).

• Strong understanding of databases, including consistency models, SQL, and distributed transactions.

• Familiarity with microservice architecture patterns and best practices, communication patterns (HTTP, messaging, gRPC, CQRS).

• Proficiency in API design best practices, including API First approach.

• Strong algorithms and problem-solving skills.

Note: Applicants for employment in Poland should possess work authorization which does not require sponsorship by the employer for a visa.