Senior Software Engineer, Query
MongoDB · Cork, Ireland
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MongoDB is on the Irish DETE permits list. The posting doesn’t mention visas.
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Irish DETE list of companies issued employment permits in 2026
Listed as MongoDB Limited. 41 permits issued so far in 2026. Snapshot 26 Oct 2026.
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First seen 24 Oct 2026. We check every day and remove closed roles.
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About the role
The MongoDB Query Testing Tools Team is hiring Software Engineers who want to join us in building a state-of-the-art distributed query system. Our Team builds tooling that allows us to ship Query Engine features with high confidence in both correctness and performance, making it a great fit if you like seeing your work protect real customers at scale.
The team develops advanced testing frameworks (end-to-end testing, fuzzing, property-based testing) as well as performance measurement tools, including high-volume workload generation tools. The team is part of the Query organization which is responsible for the MongoDB Query Language and the lifecycle of each query, from parsing to optimization to plan selection; our engineers work on maintaining and improving our optimization and execution frameworks and building new query language features to help power our customers' critical workloads.
Throughout all our work, our highest priority is always ensuring that customer queries are answered correctly. The successful applicant will be responsible for helping us to maintain the highest standards of quality through rigorous development, testing and automation strategies. This role can be based out of our Dublin/Cork office, or remotely in Ireland.
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