Build and maintain automated testing frameworks, performance tests, and internal tooling for MongoDB's query engine. Requires 5+ years of software development or performance engineering experience, fluency in Python, JavaScript or TypeScript, and experience or interest in distributed systems, databases/NoSQL, and test automation. Role is based in Dublin or Cork or remotely in Ireland.

Join MongoDB's Query Execution team to design, implement, test, and maintain query engine features and performance improvements. Requires 5+ years systems programming experience, strong CS fundamentals, and hands-on experience with compiled languages (C++, C, Rust). Role can be based remotely in Bulgaria.

Remote (Belgium) senior software engineer role on the MongoDB Query Execution team. Responsibilities include implementing and maintaining execution algorithms, contributing C++ code, improving query performance and robustness, adding query language features, and diagnosing performance issues. Required: 5+ years systems programming experience, strong CS fundamentals, and experience with large codebases (C++, C, Rust or similar).

Join MongoDB's Query Execution team to develop and maintain a distributed query engine. Responsibilities include implementing and testing high-quality C++ code, improving query performance and robustness, adding query language features, and providing diagnostics. Requires 5+ years systems programming experience; database experience, advanced degrees, or domain experience are a plus.

Join MongoDB's Query Execution team to design, implement, test, and maintain execution algorithms and query engine features focused on performance and robustness. Requires 5+ years in systems programming, strong CS fundamentals, experience with large codebases (preferably C++/C/Rust), and familiarity with databases or query engines. Remote in France.

Work on developing and improving MongoDB's distributed query execution system: implement and maintain execution algorithms, add query-language features, tune performance, and build diagnostics. Requires strong systems programming experience (5+ years), C++ or similar compiled-language experience, and solid CS fundamentals.

Remote (Netherlands) senior software engineer role on the MongoDB Query Execution Team. Responsibilities include implementing and improving query execution algorithms and language features, tuning performance, building diagnostics, integrating with other products, contributing high-quality C++ code, and participating in code review. Requires 5+ years systems programming experience and strong CS fundamentals; experience with databases and compiled languages (C++, C, Rust) is preferred.

Work on implementing and maintaining execution algorithms, query language features, performance tuning, diagnostics, and integration with other products. Requires 5+ years systems programming experience, strong CS fundamentals, experience with C++/C/Rust or similar, and B.Sc or equivalent; remote role can be based in Spain.

Work on implementing and maintaining query execution algorithms, adding query language features, tuning database performance, and building diagnostics and integrations. The role expects contributing high-quality C++ code, participating in code review, and delivering reliable, industrial-strength software; it can be based remotely in Sweden.

Join MongoDB's Query Execution team to implement and maintain execution algorithms, improve query performance and robustness, and develop query language features. The role requires 5+ years in systems programming, strong CS fundamentals, and experience with large codebases (preferably C++, C, or Rust). The position can be based remotely in the United Kingdom.

Work on implementing and maintaining execution algorithms and query language features for MongoDB's distributed query engine. Contribute high-quality C++ code, participate in code reviews, design and implement features related to query performance, diagnostics, and integration. Candidate profile requests 5+ years systems programming experience and strong CS fundamentals; experience with databases and compiled languages (C++, C, Rust) is highlighted.

Work remotely in France on MongoDB's AMP team to shape architecture and lead modernization of legacy Java monoliths to cloud-native architectures using MongoDB. Responsibilities include assessment and decomposition of monoliths, relational-to-document data modeling, implementing production-quality Java/Spring Boot services, establishing CI/CD, automated testing, observability, and mentoring engineers. Professional fluency in French and approximately 8+ years of relevant Java application modernization experience are required.

Join MongoDB Professional Services to deliver customer implementations across the application lifecycle, provide classroom training, and act as a trusted advisor. The role requires 10+ years experience, competence in one or more languages (Java, C#, Python, Node.js, Ruby, Go), experience with databases (MongoDB, Oracle, MS SQL Server, PostgreSQL), familiarity with Linux/Windows tuning, enterprise architectures, and frequent short customer trips (up to 15%). Responsibilities include influencing product roadmap and partnering with delivery, account, and engineering teams.

Join MongoDB's Developer Tools team to build APIs and customer-facing UIs for MongoDB Atlas and MongoDB Compass/Atlas Data Explorer. The role is fully remote for candidates based in the United States (US citizenship required). Key technologies include TypeScript, React, Node.js; experience with scalable, high-availability web apps, databases, and distributed systems is expected. Posted U.S. base salary range: $85,000–$230,000 USD.

Work on MongoDB's Query Optimization team to design and implement a distributed, open-source query optimizer and related query language features. Requires 5+ years in data management, distributed systems, or large-scale backend engineering, strong skills in C++ or another systems language, and solid foundations in database internals, data structures, algorithms, and software architecture. Role supports U.S. and Canada (Eastern or Central time zones).

Join MongoDB's Query Execution team to design, implement, test and maintain query execution algorithms and features. Requires 5+ years systems programming experience, strong CS fundamentals (data structures, algorithms), and experience with compiled languages (C++, C, Rust). Role can be Dublin-based or remote in Ireland; relocation can be supported.

Join the Platform Engineering (SRE) Deployments team to design, build, and operate continuous delivery infrastructure used to deploy code from development through production. Work includes extending Argo Workflows/ArgoCD, automation to reduce operational toil, Kubernetes and containerization work, cloud infrastructure (AWS/GCP/Azure), networking and observability, onboarding flows for engineering teams, and participating in a 24/7 on-call rotation.

The Deployments team designs and maintains continuous delivery infrastructure (primarily Argo Workflows and ArgoCD) and Kubernetes-based tooling to enable reliable deployments across multi-cloud environments. The role requires 6+ years of software development and distributed systems experience, proficiency in Python or Go, experience with large-scale CI/CD pipelines, cloud platforms (AWS/GCP/Azure), Linux and networking, and participation in a 24/7 on-call rotation. Candidates should be able to work East Coast hours.