Staff Software Engineer, Query – MongoDBJoin the MongoDB Server Query Integration team to help build a world‑class distributed open‑source database. Our team plays a crucial role in the experience and performance of data processing. We are responsible for building user‑facing features on top of the core query engine and for integrating the query engine with other products in the MongoDB ecosystem. This includes enhancing our time‑series product, extending language support for analytics, growing Atlas Search and Vector Search with database support, and adding workload telemetry to provide deeper insight into how our database is used.We have tons of compelling problems to solve with a direct impact on users for transactional, time‑series, lexical, and vector search and analytical workloads. The team is systematically rewriting every major component of our optimization and execution systems, and we need your help to design and build the heart of a distributed, flexible‑schema document database.Position is open for candidates based in the United States or Canada under a hybrid working model.Candidate Profile10+ years of experience in data‑management systemsExperience building production‑level code with a large user base, robust design structure, and rigorous code qualityDegree in Computer Science or a similar field, or equivalent practical experience, with strong competencies in data structures, algorithms, and software design/architectureExperience with large codebases written in C++ or another systems programming language, including defect tracing, effort estimation, and design evolution during rewritesPassion for the theory and practice of database query engines,



and academic or hands‑on experience in the database domainPosition ExpectationsBe directly responsible for delivering goals across a 6–18 month timeframePlay a key role in defining the roadmap for the next 12 monthsWrite well‑tested, production‑ready code in C++ (our test infrastructure also uses Python and JavaScript)Research state‑of‑the‑art query systems to inform our designLeverage deep knowledge of the product’s strengths and weaknesses—as well as industry trends—to provide technical vision and directionAdvise management on decisions related to roadmap, processes, architecture, and designCollaborate with stakeholders and engineering teams across the company on large initiativesInfluence and grow team members through active mentoring, coaching, and leading by exampleHelp cultivate a strong talent bench through interviewing, mentoring, and knowledge sharingSuccess MeasuresIn three months: contribute to a project slated for the next major version and fix a few bugs in a minor version of our latest stable release; learn about MongoDB’s project lifecycle and long‑term goals.In six months: take on code‑review responsibilities, actively draft and review designs for new features, and present a paper or system architecture related to query systems.In twelve months: leveraging extensive past experience, contribute to the long‑term technical roadmap of the MongoDB Query team.About MongoDBMongoDB is built for change, empowering our customers and our people to innovate at the speed of the market. We have redefined the database for the AI era, enabling innovators to create, transform,



and disrupt industries with software. MongoDB’s unified database platform—the most widely available, globally distributed database on the market—helps organizations modernize legacy workloads, embrace innovation, and unleash AI. Our cloud‑native platform, MongoDB Atlas, is the only globally distributed, multi‑cloud database available across AWS, Google Cloud, and Microsoft Azure.With offices worldwide and nearly 60,000 customers—including 75% of the Fortune 100 and AI‑native startups—MongoDB is powering the next era of software. Our compass is our Leadership Commitment, guiding how and why we make decisions, show up for each other, and win. It’s what makes us MongoDB.We’re committed to developing a supportive and enriching culture for everyone, including fertility assistance, generous parental leave, and more. Learn more about what it’s like to work at MongoDB and help us make an impact on the world!Compensation & BenefitsMongoDB’s base salary range for this role in Canada is: $159,000—$221,000 CAD. Salary is one part of our total compensation and benefits package, which may include equity, participation in the employee stock purchase program, flexible paid time off, 20 weeks fully‑paid gender‑neutral parental leave, fertility and adoption assistance, RRSP with employer match, mental health counseling, backup child and elder care, and health, dental, and vision benefits.Legal & EEO InformationMongoDB is committed to providing any necessary accommodations for individuals with disabilities within our application and interview process. To request an accommodation due to a disability, please inform your recruiter. MongoDB is an equal opportunities employer.Req ID: (phone hidden)#J-18808-Ljbffr

📌 Staff Software Engineer, Query - C$159,000 - C$221,000 A Year (Toronto)
🏢 MongoDB
📍 Toronto