An Huggins

Senior Software Engineer - Ios @Sainsbury's

London, GB

Lead engineer on the Sainsbury’s Groceries iOS app, with earlier contributions to the Argos app (2020). Focused on building scalable, high-performance SwiftUI components and modernising legacy UIKit-based code. All new work follows MVVM architecture and the Coordinator pattern for clean, maintainable code.Key Responsibilities & Achievements- Feature lead on multiple initiatives from requirements gathering with PMs, feasibility discussions with UX/UI, API collaboration with backend engineers, through to implementation and A/B test-driven release- Built modular, reusable SwiftUI components with MVVM + Coordinator, driving modernisation of legacy code- Integrated RESTful APIs using async/await, with full unit test coverage and mocked JSON fixtures- Collaborated closely with UX/UI teams to refine user flows and ensure alignment with the Apple Human Interface Guidelines and platform design conventions- Maintained high-quality code with unit tests, snapshot tests, and a comprehensive UI test suite (Embassy & Ambassador for network mocking)- Introduced and enforced team-wide standards with SwiftLint, SwiftFormat, SonarQube, and the RayWenderlich Swift style guide- Improved app stability using Firebase Crashlytics and enhanced performance via Instruments and NewRelic- Managed Firebase Remote Config and Google Analytics via Tealium for A/B testing and feature rollout validation- Built and maintained CI/CD pipelines with GitHub Actions, shipping to TestFlight and Firebase App Distribution- Authored detailed release documentation and led a rotating release lead schedule to increase team resilience- Mentored new developers, contributed to hiring/interview processes, and fostered team-wide knowledge sharing- Practiced Agile delivery, including TDD, pair programming, weekly release trains, and user validation via Pivotal Labs (2018)- Encouraged a culture of excellence through WWDC discussions, shared learning, and a strict zero-warning policy

University of Technology Sydney

Bachelor of Engineering, Diploma of Engineering Practice (Software Major), Computer Software Engineering