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Software Engineer, Query Execution

MongoDB· Query Execution Team
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Hybrid (Spain)full-timePosted 4d ago

About the role

Hiring software engineers to develop a high performing, reliable, and modular distributed query system. Role focuses on execution algorithms, query language features, performance tuning, and integration with other products/tools. Remote work option based in Spain.

Responsibilities

  • Understand and improve current functionality of the MongoDB query engine
  • Contribute high quality C++ code and give and solicit feedback 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++Data structures and algorithmsSoftware design/architecture
Nice to have:Rust or similar compiled languageDatabase systems
Last updated Oct 22, 2026. Interested? Apply on the company site.
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