MongoDB
Senior Software Engineer, Query Optimization
$101K–$273K
Austin +3 · Senior · Full-time · Posted Aug 7, 2026
- Location
- Austin
New York City
United States
New York, United States - Experience
- 5+ years in data management systems, distributed systems, or large-scale backend engineering.
- Education
- Degree in Computer Science or similar field, or equivalent practical experience.
About the job
Build and evolve MongoDB’s distributed query optimization system, including query parsing, optimization, plan selection, and performance-related features.
What you'll do
- Design, implement, test, and support query performance, robustness, diagnostics, and query language features.
- Set technical direction and architecture; research query systems and help shape the team’s roadmap.
- Coordinate engineering across teams and mentor colleagues.
What they ask for
- Experience building production-level code for a large user base with strong design and code quality.
- Degree in Computer Science or a similar field, or equivalent practical experience; strong data structures, algorithms, and software design/architecture skills.
- Experience with large code bases written in C++ or another systems programming language.
- Strong foundation in database internals.
Nice to have
- Experience in query optimization.
- Background in compilers, language transpilers, or distributed storage systems.
Pay
$101,000 — $273,000 USD (base salary)
Tools
C++
Model-written summary · the original posting is authoritative