Software Engineer - Query Testing Tools
Hybrid (Ireland)Full-timePosted 5d ago
About the role
Role on the MongoDB Query Testing Tools Team to build a state-of-the-art distributed query system, develop testing frameworks (end-to-end testing, fuzzing, property-based testing) and performance measurement tools to ensure correctness and scalability of MongoDB's Query Engine.
Responsibilities
- Design, develop, and maintain automated testing frameworks, Performance automated tests and internal tooling for the MongoDB query engine
- Collaborate closely with peers to understand new features and functionalities, ensuring testability, test frameworks, tooling and coverage for automating tests of both happy-path and edge-case scenarios
- Provide feedback in code reviews, focusing on the robustness and reliability of code changes
Qualifications
- 5+ years of experience in software development and/or performance engineering
- Fluency in Python, Javascript or Typescript
- Enjoys chasing down difficult problems in a distributed environment
- Able to make complex concepts easy to grasp in written and spoken English
- Able to decompose and solve complex problems and can rapidly iterate by validating new hypotheses and rethinking current assumptions
- Demonstrating hands-on experience working with relational or NoSQL databases is a plus
- B.Sc. in Computer Science or related field, or equivalent practical experience. Advanced degrees of experience in database query engines is a plus
- Experience in developing automation test frameworks is a plus
- Experience in query processing engine testing is a strong plus
- Experience in developing performance test plans and monitoring frameworks is a strong plus
- Background in database query engines or compilers is a strong plus
Skills
Required:PythonJavaScript / TypeScript
Nice to have:Automated testing frameworksPerformance testingDistributed systems
Benefits
- Learn more about what it’s like to work at MongoDB (Culture blog, inclusion, employee benefits)
- Parental leave policy and fertility assistance (as referenced in culture materials)
- Accommodations for individuals with disabilities in application/interview process
- Equal opportunities employer
Last updated Oct 22, 2026. Interested? Apply on the company site.
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