Software Engineer, Query Execution
Hybrid (Belgium)full-timePosted 4d ago
About the role
Software engineer role focused on developing a high performing, reliable, and modular distributed query system within MongoDB’s Query Execution Team. Responsibilities include implementing execution algorithms, adding query language features, tuning performance, and collaborating to deliver robust technical solutions. Role is remote-based in Belgium.
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 plus but not required
- 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++Code reviewsData structures and algorithms
Nice to have:Distributed systems
Benefits
- Employee benefits mentioned in culture and inclusion context (referenced in job description)
Last updated Oct 22, 2026. Interested? Apply on the company site.
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