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software engineer 3, query execution

Dublin🌐 Remote💼 Full-time🗓 2026-05-28 → 2026-08-01

Core

Build a distributed open source query engine for MongoDB, handling the lifecycle of queries from parsing to execution, including geospatial search and update subsystems.

Role type

Senior IC software engineer (query execution)

Builds

MongoDB Server Query engine (distributed document database)

Domain

Database systems / Data processing

Deliverable

production ML models | product features

Required skills

C++, data structures, algorithms, software design/architecture, large code base management, database systems development

Preferred skills

C++ in database systems, query engine theory, M.Sc./Ph.D in database domain

Technologies

C++, MongoDB

Responsibilities

Improve current functionality of the MongoDB query engine; design, implement, test, and support new features for query performance and robustness; coordinate seamless changes in a large code base; collaborate with client drivers, cloud services, and enterprise tools teams.

Seniority

Mid-level (3+ years), hands-on IC

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