Java Integration Engineer: APIs, Microservices & Kubernetes

Sii Poland

Warszawa

On-site

PLN 180,000 - 260,000

Full time

13 hours ago

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Job summary

Sii Poland invites a skilled Java Integration Developer to join a transformative project in the digital business domain. You will create and develop integration services and APIs, design integrations between systems, and collaborate with architects, analysts, and project teams, using Java 21+ and Spring Boot.

This role emphasizes CI/CD automation and Kubernetes environments to ensure quality, security, and performance.

Qualifications

4+ years of commercial Java experience with Java 21+ and Spring Boot.
Designing and implementing system integrations and APIs (REST, JSON, OpenAPI, OAuth 2.0, JWT, SOAP, XML).
Experience with asynchronous integrations (Kafka, RabbitMQ, or similar).
Experience with API management platforms and API publishing & security.
Microservices architecture and Kubernetes deployment experience.
CI/CD knowledge (Bamboo or Jenkins) and Git/Bitbucket; deployment automation & Jira.
Unit testing and Java testing frameworks.
Databases: PostgreSQL or Oracle SQL; ability to create and optimize queries.
Fluent Polish.

Responsibilities

Design, implement, test, and maintain integration flows and APIs.
Participate in technical decisions for integration and API implementation.
Ensure quality, security, availability, and performance of solutions; diagnose issues.
Collaborate with architects, analysts, Product Owners, and project teams to refine requirements.
Participate in estimation, planning, and risk analysis.
Support team members and share best practices.
Conduct code reviews and promote coding quality standards.