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Java Software Engineer / E

Poznań, Greater Poland Voivodeship, pl💼 Full-time🗓 2026-10-05 → 2026-10-07

Core

Designing, developing, and maintaining backend integration services between banking systems (Calypso and PayHub) using Java and asynchronous messaging.

Role type

Senior IC Java backend engineer (system integration)

Builds

Integration services connecting Calypso and PayHub within a banking ecosystem

Domain

Banking / Financial services / System Integration

Required skills

Java, REST APIs, Kafka, RabbitMQ, PostgreSQL, SQL, asynchronous communication, integration troubleshooting, SDLC

Preferred skills

Banking domain knowledge, enterprise system integration, event-driven architecture, log analysis, Agile/Scrum

Technologies

Java, Kafka, RabbitMQ, PostgreSQL, Calypso, PayHub (via careerplan.io/jobs/744000153508567-java-software-engineer-e-at-inetum)

Responsibilities

Develop and maintain backend components using Java; Design and implement integrations between Calypso and PayHub; Design, develop, and maintain REST APIs; Implement asynchronous communication using Kafka or RabbitMQ; Analyze and troubleshoot integration and production issues; Work with PostgreSQL, including creating and analyzing SQL queries; Participate in requirements analysis and the implementation of new functionalities; Support integration testing and deployments of new solution versions.

Seniority

Mid-Senior, hands-on IC