Developed a fluent table writing API for Java and Spark integration within the apache/incubator-wayang repository, focusing on enabling end-to-end data pipelines with optimizer-driven routing to platform-specific sinks. The work involved adding writeTable methods in both Java and Scala, wiring sink mappings into the optimizer, and supporting multi-language sink registration. By facilitating seamless routing of data operations and reducing boilerplate, this feature accelerated cross-language data processing and improved developer ergonomics. The implementation demonstrated skills in API development, data processing, and Spark integration, while contributing to a more maintainable and extensible codebase for Java and Scala data workflows.