Java Integration Developer (f/m/x) w Warszawa, Polska
Sii Sp. z o.o.
KontraktUmowa czasowa lub freelancing
Warszawa, Polska
Your responsibilities
Designing, implementing, testing, and maintaining integration flows and APIs according to requirements and Definition of Done
Actively participating in technical decision-making regarding integration and API implementation, considering architectural standards
Ensuring the quality, security, availability, and performance of delivered solutions, including diagnosing issues and addressing their root causes
Collaborating with architects, analysts, Product Owners, and project teams to refine requirements and agree on solutions
Participating in estimation, work planning, and analysis of technical risks
Supporting team members in solving technical problems and sharing best practices
Regularly participating in code reviews and developing coding quality standards and software production automation
Our requirements
Minimum 4 years of commercial experience in developing applications in Java, including practical work with Java 21+ and Spring Boot
Hands-on experience designing and implementing system integrations and APIs using REST, JSON, OpenAPI, OAuth 2.0, JWT, SOAP, and XML
Practical knowledge of asynchronous integrations using Apache Kafka, RabbitMQ, or another message broker
Proficiency in implementing integrations using API Management platforms, including API publishing and security
Background in developing solutions based on microservices architecture and deploying them in a Kubernetes environment
Strong understanding of CI/CD processes, particularly Bamboo or Jenkins, as well as Git/Bitbucket repositories; practical experience with deployment automation and Jira
Knowledge of unit testing and Java testing frameworks
Solid experience with PostgreSQL or Oracle databases, including creating and optimizing SQL queries
Ability to work independently, solve problems, and make technical decisions within projects
Fluent Polish
Optional
Experience working with Microsoft Azure API Management or an equivalent solution
Practical experience with Docker, Kubernetes, and Helm
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