Senior Java Developer

Possible location in Poland : 100% remote

Contract B2B via Ework - Rate up to 160PLN/h net + VAT

✔️Project Context:

• Shipment Stores creates a single point of truth for shipment data at KN. It integrates shipment data across transport management systems and modes of transportation. The output ports offer a consolidated view of a shipment fit for both - analytics and operations.
• Near-Real-Time Output Port on KNITE MEP Confluent kafka topic, Synchronous REST API, Analytical Output port on Snowflake DB, Synchronous GraphQL Output Port.
• Goals: Implementation of features/stories with business requirements and logic, develop tickets from the sprint, ensure good test coverage, write code, and release it, propose improvements to the architecture, maintain proper code quality/ re-factoring, fine tune product performance.

✔️Must-Have / Important Skills

Code development

• Java
• Spring framework
• Quarkus framework

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• AWS infra (lambda, documentDB, S3 buckets, etc.)

Apache Flink

• Flink stream processing
• Stateless/ stateful stream processing concepts

Apache Kafka / Confluent Platform

• Kafka producer/consumer model
• Kafka Connect (source/sink connectors)
• Confluent Schema Registry (Avro)
• Topic and consumer group management

Avro & Schema Design

• Avro schema authoring and evolution rules
• Schema Registry API usage (know how to)

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✔️Nice-to-Have Skills

Code development

• Terraform
• Python
• BDD/ Cucumber
• SnowFlake

AsyncAPI

• Understanding fundamental concepts of asynchronous API working

GitOps / CI-CD

• Pull Request-based rule deployment workflows (hands on gitflow experience)
• Configuration management