Douglas W. Sjoquist

Integrated analytics tools into the iOS Sharpen App. Developed key features including settings, user onboarding, and authentication. Implemented and integrated seven tools for analytics, email and SMS automation, AWS data lake, and push notifications.

Owned iOS checkout platform architecture and delivery for Walmart’s high-volume eCommerce experience, partnering cross-functionally to ship reliable, scalable features at pace. Led architecture evolution, modularization, and long-term platform maintainability. Drove automated testing and accessibility training. Established comprehensive automated testing (unit, integration, UI) with XCTest/XCUITest, raising coverage and reducing post-release defects. Led multi-team delivery across a large inner-sourced codebase with frequent production releases. Defined and enforced iOS engineering standards for architecture, code quality, performance, security, and testing. Architected unidirectional, reactive iOS systems using Swift, Combine, and MVVM-styles patterns. Collaborated with backend teams on GraphQL schema design and mobile-optimized API integrations for checkout and payments. Drove observability and reliability initiatives, instrumenting core checkout flows and maintaining 99.9%+ crash-

Led team in refactoring checkout code to unidirectional, reactive architecture, modernizing the codebase and improving maintainability. Increased test coverage from under 50% to over 75%. Migrated from Objective-C to Swift, ensuring long-term technical sustainability. Implemented eCommerce features, supported millions of daily active users, and maintained legacy Objective-C modules across multiple app releases.