Senior iOS Developer

Summary

Join Lightspeed as a Senior iOS Developer to modernize and shape the future of their Retail Point-of-Sale (POS) applications. You will own and modernize large parts of their iOS codebase, refactor core systems using Swift and Objective-C, reduce technical debt, and collaborate with engineers, product managers, and designers. The role requires production experience with Swift and Objective-C, strong knowledge of UIKit, Core Data, Fastlane, and REST APIs, and solid grasp of iOS SDK. You will work on-site in Montreal when needed. Lightspeed offers a flexible work culture, genuine career opportunities, and a range of benefits including flexible paid time off, health insurance, health and wellness benefits, paid parental leave, mental health resources, and a LinkedIn Learning license.

Requirements

• Production experience with Swift and Objective-C
• Strong knowledge of UIKit, Core Data, Fastlane, and REST APIs
• Solid grasp of iOS SDK, object-oriented design, and refactoring techniques

Responsibilities

• Own and modernise large parts of our mature iOS codebase
• Refactor and evolve core systems using Swift, Objective-C, UIKit, and Core Data
• Reduce technical debt and introduce scalable architecture patterns
• Lead technical efforts in reducing the Objective-C footprint
• Collaborate cross-functionally with engineers, product managers, and designers to build customer-facing features
• Contribute to code reviews and promote best engineering practices
• Work on-site in Montreal when needed for access to specialised hardware (e.g. payment terminals, scanners)

Preferred Qualifications

• Experience with SwiftUI, Combine, GraphQL, or CI/CD
• Background in payments, financial services, or high-traffic applications
• Interest in API design and developing a polished UI/UX
• Comfortable working with legacy codebases and modernising them
• Strong problem-solving, debugging, and code review capabilities
• Able to work independently and move quickly while maintaining quality
• Experience collaborating across teams in an agile environment

Benefits

• Flexible paid time off policy
• Health insurance
• Health and wellness benefit of $500 per year
• Paid leave and assistance for new parents
• Mental health online platform and counselling & coaching services
• Volunteer day
• LinkedIn Learning License
• Lightspeed share scheme (we are all owners)
• Flexible working policy (remote or hybrid) and unlimited paid time off (yes, you read that right!)
• Mental health online platform and counselling & coaching services
• Health and wellness benefits
• LinkedIn Learning license (learning is always ongoing)
• Volunteer day to be able to give back to society!