Staff Software Engineer, Query (Optimization) at MongoDB

This role is designed for a heavyweight systems engineer with a deep specialization in database internals. While the listing is categorized as "Mid-level," the requirements demand **10+ years of experience** in data management systems. The ideal candidate has an academic or professional obsession with query engines and is comfortable navigating massive, complex C++ codebases to lead a systematic rewrite of core optimization components. The compensation is highly competitive, ranging from **$159k to $221k CAD** plus equity and a 401k/RRSP match. A standout feature is the genuine flexibility; despite being listed under specific Canadian provinces, the team supports fully remote work across North America and aligns projects with your local time zone. You’ll also benefit from top-tier perks like 20 weeks of gender-neutral parental leave and fertility assistance. **You might be a good fit if you:** * Have a decade of experience building and scaling production-level database systems. * Are an expert in **C++** and high-performance systems programming. * Enjoy reading white papers on query optimization and translating theory into production code. * Want to architect the "brain" of a distributed, flexible-schema database used by the Fortune 100.