Java Software Engineer - FinTech

Warsaw·Posted today

cryptoweb3blockchainfintechjavascriptreactkubernetesdockerawskafka

<div> Rate: 89 – 119 / hour (B2B) We are looking for a skilled Java Engineer to join Flix on a freelance/service agreement basis (B2B contract). This is a contractor engagement to work on impactful, hands-on challenges in the domain of financial technology.  </div> <div> Scope of Services </div> <div> Bring expertise in Java-based backend development. Work across Flix's finance technology environment to build and maintain critical internal applications — from revenue accounting, invoices processing to bus partner settlements and payment reconciliation. </div> About the Engagement <ul> <li>Design, build, and maintain features for the internal data-heavy applications, supporting automated bus partner settlement generation across all FlixBus entities around the globe.  </li> <li>Develop and enhance the internal services that allow finance and billing teams to manage bus partners' settlement-relevant data and track changes via event history.  </li> <li>Communicate directly with business counterparts (finance, billing, and partner teams) to understand needs and shape solutions. </li> <li>Actively participate in product development, from refinement and technical design through delivery and operations. </li> <li>Implement and maintain event-driven data processing workflows using Kafka to support settlement operations. </li> <li>Contribute to infrastructure-as-code practices and CI/CD pipelines on AWS, and run services on Docker/Kubernetes, with monitoring and observability (e.g. Datadog).  </li> </ul> About You <ul> <li>At least 3 years of experience as a Software Engineer, with exposure to data processing systems  </li> <li>Proven experience working with Java in a commercial environment  </li> <li>Experience with event-driven architectures, ideally Kafka </li> <li>Experience working with cloud-based infrastructure providers, ideally AWS  </li> <li>Solid SQL knowledge </li> <li>Hands-on experience with Docker and Kubernetes (or similar container orchestration tools) and CI/CD </li> <li>Familiarity with Snowflake or similar data warehousing solutions is a plus </li> <li>Experience in front-end technologies (e.g., JavaScript, HTML5, React.js, or Angular) is a plus  </li> <li>Fluent in English</li> </ul> Cooperation model <ul> <li>Cooperation based on a service agreement (B2B/freelance contract), not an employment contract.</li> <li>You will operate as an independent contractor, responsible for delivering agreed services and submitting invoices </li> <li>Location: open for contractors based in Poland</li> </ul> <iframe src="https://www.youtube.com/embed/YlHz7TiiRAw" width="560" height="314"></iframe>

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