Senior Java Backend Developer- Hybrid Krakow-3 Days onsite weekly

Dear Consultant,

We are hiring a Senior Java Backend Developer with a strong technical foundation and proven experience in modern Java ecosystems, API development, cloud-native architecture, and CI/CD automation. This role requires on-site collaboration 3 days per week at the UBS office in Poland and is ideal for someone passionate about scalable backend systems, cloud technologies, and secure coding. Send Cv to (marcillina.tietjen@dcvtechnologies.co.uk) if you are interested.

Location: [Krakow Poland (Hybrid – 3 Days Onsite

Contract Type: B2B Contract

Experience Level: 10+ Years

Start Date: ASAP

Key Responsibilities:

• Design, develop, and maintain backend services using Java 18+ and Spring Boot

• Build and document RESTful APIs and GraphQL interfaces with OpenAPI/Swagger

• Optimize and manage relational and NoSQL databases (PostgreSQL, MySQL, MongoDB)

• Implement CI/CD pipelines using Jenkins, GitLab CI/CD, or GitHub Actions

• Manage containerized deployments via Docker and Kubernetes (Helm, config maps)

• Work with Azure cloud services (App Services, AKS, Functions)

• Integrate monitoring/logging solutions such as Prometheus, Grafana, ELK, or Splunk

• Ensure robust unit and integration testing with JUnit, Mockito, WireMock, etc.

• Develop event-driven architectures with Kafka, REST/SOAP integrations

• Apply secure coding practices and implement OAuth2, JWT, and Spring Security

Required Skills:

10+ years of backend development experience

Advanced Java (Java 18+) and Spring Boot expertise

Hands-on experience with APIs, CI/CD, and container orchestration

Strong knowledge of Azure, cloud-native development, and microservices

Solid understanding of security, monitoring, and performance optimization

Effective communicator and team player in Agile environments

Work Model:

• Hybrid (3 days/week onsite

• Remote flexibility on remaining days

• Must be located in Poland or willing to relocate