Staff Software Development Engineer

The Edge team sits at the intersection of Wealthsimple's backend ecosystem and our client applications. We own the GraphQL gateway and the public API, along with the tooling, patterns, and best practices that help all our product developers ship features quickly and reliably. Reporting to a Senior Manager of Software Development, you'll work alongside developers and cross-functional partners to shape our APIs and how data flows through our systems. This year, we're leading Wealthsimple's migration from schema stitching to GraphQL Federation—a foundational shift that will make our gateway faster, more predictable, and essentially maintenance-free. We're looking for a Staff Software Developer who can guide complex technical initiatives across the finish line while making other developers more effective. You'll help us implement our big project this year, GraphQL Federation architecture. You'll balance hands-on coding with technical leadership, unblocking teams, refining our approach as we learn, and ensuring we ship a gateway that product teams never have to think about.

Build automation tooling , including AI-assisted migration scripts , to support and accelerate the transition
Improve gateway performance and observability
Deep experience with GraphQL at scale , including federation, schema design, and performance optimization; Proven track record of delivering large, cross-team technical initiatives , coordinating migrations, unblocking dependencies, and maintaining momentum across services
Solid software engineering fundamentals , with experience building, monitoring, and operating high-traffic production systems
Experience with Ruby and operating Node.js services is a plus