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About The Role Join the team building entropyDB's core query and storage engine. You'll work directly on the Java/Spring Boot backend SQL execution, transaction management, and the RocksDB-backed storage layer taking the platform from alpha to production. Key Responsibilities Implement real SQL query execution against the storage engine (parser is in place via Apache Calcite; execution is the current priority)Design and build indexing strategies for document, graph, vector, and time-series data modelsHarden the transaction layer: cross-request transaction lifecycle, isolation levels, deterministic orderingWrite and maintain automated tests across the backend (unit, integration)Collaborate on API design across REST endpoints, the CLI, and client SDKs Requirements 5+ years building production backend systems in JavaStrong understanding of database internals: storage engines, MVCC, query planning, or transaction processingExperience with Spring Boot or comparable JVM frameworksComfortable reading and reasoning about existing code before extending it, not just writing greenfield Preferred Qualifications Experience with RocksDB, LevelDB, or other LSM-tree storage enginesFamiliarity with Apache Calcite or other SQL parsing/optimization frameworksExposure to distributed consensus (Raft, Paxos) or the Calvin protocol Benefits & Perks We invest in our team with comprehensive benefits designed to support your growth and well-being. Competitive salary + meaningful equity Fully remote, async-friendly culture Direct ownership of core product architecture at an early-stage company Health insurance coverage All benefits are available from day one. We regularly review and enhance our benefits package based on team feedback. Apply for this Position Submit your application through our online form. We review all applications carefully and will reach out to qualified candidates within 5-7 business days. Posted 2026-07-01 Contact careers@entropydb.com Similar Positions Frontend Engineer (Intern) Remote DevOps / Platform Engineer Remote .