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Senior IT Developer

b2bnetworkWarszawa, Polska

2 days 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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Senior Developer • Warszawa, Polska