Role Overview

Join MongoDB as a Lead Engineer, Query and shape the future of the world's leading modern developer data platform. This leadership role focuses on our high-performance query engine that powers transactional, time-series, and analytical workloads for nearly 60,000 customers worldwide, including 75% of the Fortune 100. You'll manage a talented team of engineers while contributing directly to the MongoDB server codebase that supports MongoDB Atlas, the only globally distributed, multi-cloud database across AWS, Google Cloud, and Azure.

Based in Toronto, Ontario or working remotely across Canada, you'll solve complex problems with immediate user impact. From optimizing query execution for AI-native applications to scaling analytical workloads, your work will redefine database performance in the AI era. This is engineering leadership at the intersection of NoSQL innovation, distributed systems, and team excellence.

Key Responsibilities at MongoDB

• Lead and mentor a team of software engineers, ensuring their technical success and career development
• Contribute production code to MongoDB server projects, including features for the next major release
• Drive architectural decisions through code reviews and design feedback for query optimizer improvements
• Remove technical blockers and coordinate dependencies across distributed systems teams
• Plan team growth including hiring strategies, resource allocation, and project roadmaps
• Set team culture through hands-on leadership and example-setting behaviors
• Deliver predictable timelines with accurate project estimation and executive communication
• Build growth plans tailored to each engineer's career aspirations and skill development
• Optimize query performance for transactional consistency, time-series ingestion, and analytical aggregation

Qualifications & Requirements

To succeed as a Lead Engineer, Query at MongoDB, you'll bring proven expertise in systems programming and team leadership:

• Production C++ experience building scalable systems with millions of users
• Computer Science foundation with deep knowledge of data structures, algorithms, and database architecture
• Team management success leading engineering teams through complex technical challenges
• Query engine expertise optimizing execution plans, index selection, and workload distribution
• Passion for mentorship helping engineers grow into senior individual contributors or leaders
• Distributed systems experience handling consistency, partitioning, and fault tolerance at scale

Success Timeline: In 3 months, you'll contribute to major releases and build team relationships. By 6 months, you'll establish growth plans and fill skill gaps. Within 12 months, your team will consistently ship features with you established as a key technical leader.

Salary & Benefits

MongoDB offers competitive compensation for Lead Engineer, Query roles ranging from $180,000 - $250,000 USD base salary (CAD equivalent), plus equity and comprehensive benefits. Our total rewards package includes:

• Competitive equity in the fastest-growing database company
• MongoDB University certification and learning platform
• Global Family Leave and fertility assistance
• Wellness programs and employee affinity groups
• Remote-first flexibility across Canadian provinces
• Professional growth stipend for conferences and certifications

Why Join MongoDB?

MongoDB powers the AI era of software development. Our unified platform helps organizations modernize legacy systems while embracing cutting-edge innovation. As a Lead Engineer, Query, you'll work on the core query engine that executes billions of operations daily across the most demanding workloads.

Our Leadership Commitment guides everything we do, creating a culture where engineers thrive. With offices worldwide and a remote-friendly policy, you'll collaborate with the brightest minds in databases while enjoying generous benefits that support your entire life journey.

Join the team that's redefining how developers build with data. From time-series IoT applications to real-time analytics and AI vector search, your impact will be global and immediate.

How to Apply

Ready to lead MongoDB's query engine into the future? Apply now for the Lead Engineer, Query position. Submit your resume highlighting C++ experience, team leadership, and database systems work. MongoDB is committed to equal opportunity and provides accommodations throughout the hiring process.

Req ID: 4263316638 - Don't miss this chance to shape the world's most popular NoSQL database at scale!