Senior Software Developer - Cards
Core
Building in-house card infrastructure (issuance, authorization, transaction processing, lifecycle management) for Wealthsimple's financial products.
Role type
Senior Software Developer (Backend/Infrastructure)
Builds
End-to-end card stack systems and core financial infrastructure
Domain
Financial Services / Payments / Card Infrastructure
Deliverable
production ML models | product features | infrastructure
Required skills
Backend engineering, payments/card domain knowledge, system design, greenfield development, AI-centric workflows, technical leadership
Preferred skills
Card network/processor integration, Ruby on Rails, React/React Native
Technologies
Ruby on Rails, React, React Native
Responsibilities
Own greenfield projects from design to launch, build backend systems for reliability and scale, make architectural decisions, mentor teammates, partner with product and design
Seniority
Senior, hands-on IC with leadership responsibilities
