Senior iOS Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior iOS Engineer based in Canada.

This role sits at the core of a high-impact transaction platform powering large-scale shopper and checkout experiences used by millions of customers. You will be responsible for building and evolving advanced iOS applications that support real-time payments, checkout flows, and intelligent order verification systems. Working within a highly collaborative, product-driven engineering team, you will influence both technical architecture and product direction while delivering features that directly impact marketplace efficiency and user satisfaction.

The environment is fast-paced, data-informed, and deeply focused on measurable outcomes, with strong emphasis on ownership, scalability, and reliability. You will partner closely with product, design, backend, and cross-platform engineers to deliver seamless mobile experiences. This is a senior technical role where your decisions shape both user experience and platform evolution at scale.

• Own end-to-end development of iOS features, from architecture design and implementation to rollout, monitoring, and iterative improvement
• Define and evolve the iOS technical strategy for key product areas, ensuring scalability, performance, and maintainability
• Build and maintain complex mobile features across checkout, payments, and real-time verification workflows
• Collaborate closely with product managers, designers, backend engineers, and data teams to deliver seamless user experiences
• Apply modern iOS architecture patterns and best practices (MVVM/MVI, modularization, dependency injection)
• Improve and modernize existing codebases by reducing technical debt and building reusable components
• Integrate with multiple backend systems and APIs, ensuring reliability and performance across distributed systems
• Use observability tools and production monitoring to diagnose issues and continuously improve system stability
• Lead technical discussions, mentor engineers, and act as a key point of contact for iOS development across teams

This role requires deep expertise in iOS development, strong architectural thinking, and the ability to lead complex technical initiatives in a fast-moving environment.

• 5+ years of experience in mobile or software engineering with a strong focus on iOS development in production environments
• Strong proficiency in Swift, including Swift Concurrency (async/await)
• Extensive hands‑on experience with UIKit and SwiftUI in production applications
• Strong understanding of reactive programming (Combine, RxSwift, or equivalent frameworks)
• Experience implementing MVVM or MVI architectures in large-scale codebases
• Proven experience integrating REST, GraphQL, or Protobuf-based APIs
• Experience with modular iOS architectures and dependency injection patterns
• Strong knowledge of production monitoring and observability tools (e.g., Datadog, Sentry)
• Demonstrated technical leadership, including ownership of roadmap items or cross-team initiatives
• Strong debugging skills with a track record of resolving complex production issues
  
  Excellent communication skills and ability to collaborate effectively across cross-functional teams
• Experience with testing frameworks, CI/CD pipelines, and modern iOS build tooling is a strong plus

• Competitive compensation aligned with experience and market benchmarks in Canada
• New hire equity grants and ongoing equity refresh opportunities
• Fully remote‑first flexibility within eligible Canadian provinces
• Comprehensive health, dental, and wellness benefits
• Flexible paid time off and supportive work‑life balance policies
• Professional development opportunities and access to learning resources
• Exposure to large‑scale, high‑impact systems used at national scale
• Inclusive, collaborative engineering culture focused on ownership and innovation