iOS Engineer III, App Platforms

Annual Base Pay Range: $159,500 - $176,000

Who We Are

The App Platforms team plays a pivotal role in the seamless functioning of Wayfair’s suite of 10\+ native iOS and Android apps. We act as a force multiplier for the rest of the mobile organization. While we own the "paved road" infrastructure that ensures efficient builds and releases on a high-velocity weekly cadence, our primary mission is providing the core libraries, frameworks, and architecture that feature teams rely on to build delightful user experiences.

The Role

We are seeking an experienced L3 iOS Engineer who is passionate about "how things work under the hood." Unlike a typical product role focused on customer-facing features, this role lives at the boundary of Mobile Engineering.

You will spend the majority of your time architecting and evolving shared codebases—from Design Systems to Networking layers—while also providing critical support for the CI/CD tooling (Xcode/Buildkite/GitHub) that delivers our apps. As an L3, you are expected to not only maintain existing systems but to lead the architectural evolution of our platform.

What You'll Do

Core Frameworks \& Architecture (Primary Focus \~70%)

• Architect \& Evolve Libraries: Lead the development and modernization of critical frameworks used by all feature teams, including our Networking Framework (Apollo/GraphQL), Logging/Performance, and Feature Toggle systems.
• Design System Engineering: Champion UI consistency and performance by leading the adoption and architecture of SwiftUI and maintaining our library of reusable components and native transitions.
• Testing Strategy: Contribute to app stability by enhancing our Testing Frameworks, specifically architecting tooling for Unit, UI (XCTest), and Snapshot testing execution at scale.
• Privacy \& Compliance: Lead the technical implementation of evolving privacy standards, including Apple’s Privacy Manifests, App Tracking Transparency (ATT), and GDPR tracking policies.
• Dependency Management: Strategic oversight of our codebase health through managed dependency updates (Renovate/Swift Package Manager) and vetting new SDK integrations.

Infrastructure \& Developer Experience (Secondary Focus \~30%)

• CI/CD \& Build Support: Assist in maintaining our build system (Buildkite) and automation (Fastlane). You will help monitor and manage our Merge Trains/GitHub Merge Queues to ensure code merges remain unblocked and efficient for a large engineering org.
• Tooling Automation: Identify and implement opportunities to automate manual workflows using local tooling (Swift scripts, Ruby, or Python) to increase developer productivity.
• Release Operations: Collaborate with the team on release reporting and troubleshooting issues within the CI/CD pipeline to maintain our weekly release cadence.
• Mentorship \& Best Practices: Conduct high-impact code reviews and provide technical guidance to L1/L2 engineers. Ensure documentation for frameworks and platform tools is comprehensive and enables self-service.

What You'll Bring

• Experience: 5\+ years of professional iOS software development experience.
• High-Velocity Background: Proven experience working on large-scale mobile applications that ship on a weekly (or faster) release cadence.
• Technical Mastery: Fluency in Swift, with a deep understanding of UIKit, SwiftUI, and iOS SDK internals. Deep familiarity with architectural patterns (MVVM, Clean, MVI).
• Efficiency Mindset: Experience leveraging AI-driven development tools (e.g., Cursor, Junie.ai) to accelerate coding workflows, refactoring, and documentation.
• Platform Curiosity: A deep interest in the build process, not just the UI. You are curious about Xcode build settings, compiler flags, and modularization strategies.
• Tooling Familiarity: Experience with CI/CD systems (e.g., Buildkite, CircleCI, Jenkins) and scripting languages (Bash, Ruby, or Python).

Nice to Have

• Experience with GraphQL (Apollo).
• Deep experience with SwiftUI architecture in a hybrid UIKit environment.
• Experience configuring and optimizing GitHub Merge Queues for large teams.
• Experience leveraging observability tools (Datadog, Splunk) to monitor platform health and operational excellence.
• Experience with Fastlane or writing custom Ruby gems for automation.

Assistance For Individuals With Disabilities

Wayfair is fully committed to providing equal opportunities for all individuals, including individuals with disabilities. As part of this commitment, Wayfair will make reasonable accommodations to the known physical or mental limitations of qualified individuals with disabilities, unless doing so would impose an undue hardship on business operations. If you require a reasonable accommodation to participate in the job application or interview process, please let us know by completing our Accomodations for Applicants form.

Need Technical Assistance?

For more information about applying for a career at wayfair, visit our FAQ page here.

About Wayfair Inc.

Wayfair is one of the world’s largest online destinations for the home. Whether you work in our global headquarters in Boston, or in our warehouses or offices throughout the world, we’re reinventing the way people shop for their homes. Through our commitment to industry-leading technology and creative problem-solving, we are confident that Wayfair will be home to the most rewarding work of your career. If you’re looking for rapid growth, constant learning, and dynamic challenges, then you’ll find that amazing career opportunities are knocking.

No matter who you are, Wayfair is a place you can call home. We’re a community of innovators, risk-takers, and trailblazers who celebrate our differences, and know that our unique perspectives make us stronger, smarter, and well-positioned for success. We value and rely on the collective voices of our employees, customers, community, and suppliers to help guide us as we build a better Wayfair – and world – for all. Every voice, every perspective matters. That’s why we’re proud to be an equal opportunity employer. We do not discriminate on the basis of race, color, ethnicity, ancestry, religion, sex, national origin, sexual orientation, age, citizenship status, marital status, disability, gender identity, gender expression, veteran status, genetic information, or any other legally protected characteristic.

Your personal data is processed in accordance with our Candidate Privacy Notice (https://www.wayfair.com/careers/privacy). If you have any questions or wish to exercise your rights under applicable privacy and data protection laws, please contact us at [email protected].