Senior Backend Engineer, Database Core

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 models
• Harden the transaction layer: cross-request transaction lifecycle, isolation levels, deterministic ordering
• Write 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 Java
• Strong understanding of database internals: storage engines, MVCC, query planning, or transaction processing
• Experience with Spring Boot or comparable JVM frameworks
• Comfortable reading and reasoning about existing code before extending it, not just writing greenfield

Preferred Qualifications

• Experience with RocksDB, LevelDB, or other LSM-tree storage engines
• Familiarity with Apache Calcite or other SQL parsing/optimization frameworks
• Exposure 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

[email protected]

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