DB Internals/ Query Execution Specialist (C++/Java) $$$$

We are constantly growing and now looking for DB Internals & Query Execution Specialist (C++/Java) deep expertise in database engine internals, query planning, and execution architecture to join Mixed Remote Development Team collaborating with a top storage company based in Tel Aviv with investors such as Dell Capital and NVIDIA. The role involves developing (C++/Java) and optimizing core components of a SQL or analytical database engine with a strong focus on performance, concurrency, and resource efficiency.

 

Requirements:

  • Expertise in database core development, including storage engines, query planners, execution engines, and transaction processing.
  • Strong understanding of storage engines: row vs column layouts, heap files, LSM trees, B-Trees
  • Experience with index structures: B-trees, LSM indexes, hash and inverted indexes
  • Knowledge of buffer pool and cache management mechanisms
  • Solid grasp of transactions and concurrency: MVCC, locking, isolation levels
  • Familiarity with durability and recovery: WAL, replication, crash recovery
  • Understanding of low-level performance factors: memory layout, disk I/O, CPU cache behavior
  • English, sufficient for interviews and participation in meetings (B2)
  •  

We offer:

  • Remote work, mixed international team, cutting-edge technologies, and flexible working hours.
  • The project that you are not ashamed to write about in your resume.
  • High salaries and bonuses.
  • Business trips to Israel (beach hotel, rented car).
  • A friendly team with experienced mentors instead of bosses.

Required skills experience

Databases 5 years
C/C++ 5 years
Java 5 years

Required languages

English B2 - Upper Intermediate
Ukrainian B1 - Intermediate
Java, Database Internals, Database Management System (DBMS), B-Tree, LSM-Tree, database engine internals, Query execution
Published 17 December 2025 ยท Updated 25 March
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1 application
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