We are looking for Middle / Senior / Lead Java Software Engineers to support and contribute to open-source data platform projects that promote a cloud lakehouse ecosystem. The team works on Apache Iceberg and adjacent OSS integrations, including Flink compatibility, Trino and Hive4 support, custom metastore client implementation, and cross-project compatibility testing.TasksSupport Apache Flink and Iceberg v3 specification work, compatibility improvements, authentication gap fixes, and community-approved feature implementation;Add support for Trino and Hive4 in a custom IMetastoreClient implementation for BigLake;Implement compatibility test cases for Apache Iceberg across languages and projects;Work with private repository code that is being prepared for open sourcing;Contribute to technical design, implementation, testing, and review activities across the OSS support scope;Collaborate with engineering stakeholders and align implementation details with community consensusRequirementsCommercial Java engineering experience for data-intensive systems;Experience with Java data processing frameworks such as Flink, Spark, Kafka, or Beam;Understanding of data lake or lakehouse architecture;Hands-on experience with Google Cloud Platform services such as BigLake, KMS, or GCS ecosystem;Practical Python experience for tooling, tests, or integration work;Ability to work with compatibility testing, cross-system integrations, and open-source-oriented implementation workflows;Technical leadership experience for Lead-level candidates;Upper-Intermediate English level and clear communication with distributed engineering teams.Nice to Have:Apache Iceberg experience;OSS community contribution experience;Cross-system integration experience.BenefitsWorking Conditions:Overlap: by 10AM PST. B2B contractLocations: Egypt, Armenia, Kazakhstan, Georgia.