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Software Engineer, Query Execution

MongoDB· Query Execution Team
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Hybrid (Dublin, Ireland)Full-timePosted 3mo ago

About the role

Software engineer to develop a high performing, reliable, and modular distributed query system. Role includes implementing execution algorithms, adding query language features, tuning performance, and integration with other products and tools. Based in Dublin or remote in Ireland with relocation support.

Responsibilities

  • Understand and improve current functionality of the MongoDB query engine
  • Contribute high quality C++ code and participate in code reviews
  • Identify, design, implement, test, and support new features related to query performance and robustness, query language enhancements, diagnostics for query performance problems, and integration with other products and tools
  • Work constructively with peers to deliver excellent technical solutions

Qualifications

  • 5+ years of experience in systems programming
  • Experience in databases and/or data management systems is a huge plus, but not a requirement
  • Hands-on experience building industrial-strength software
  • Solid computer science fundamentals, with strong competencies in data structures, algorithms, and software design/architecture
  • Experience with large code bases, preferably in C++, C, Rust or a similar compiled language
  • B.Sc in Computer Science or similar field, or equivalent practical experience
  • Interest in the theory and practice of database query engines; hands-on experience or M.Sc./Ph.D in the domain is a plus

Skills

Required:C++
Nice to have:Databases / data management

Benefits

  • (Not explicitly listed in the provided description)
Last updated Sep 24, 2026. Interested? Apply on the company site.
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