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Senior IT Developer

Senior IT Developer

b2bnetworkWarszawa, Polska
18 hours ago
Job description

Senior Java Developer – PIP Downtown

The consultant will support the PIP Downtown team in delivering distributed, high-throughput, and business-critical backend services. The role focuses on backend development using Java and Kafka, working with relational databases (Oracle, DB2, MSSQL), and applying modern architectural practices.

Key Responsibilities :

  • Develop and optimize Kafka producers / consumers in asynchronous, event-driven systems
  • Build scalable backend services in Java, following microservices and clean code principles
  • Design and improve SQL queries and relational data models
  • Apply Domain-Driven Design (DDD) and Event Sourcing patterns
  • Contribute to high-performance and high-availability architectures

Must-Have Skills :

  • Senior-level experience in Java and Kafka (producer / consumer code, tuning)
  • Strong SQL skills with Oracle, DB2, MSSQL or similar
  • Proven experience with distributed systems, microservices, and DDD
  • Knowledge of event sourcing and clean coding practices
  • English fluency for daily collaboration
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