Senior iOS Engineer

ABOUT US We are Playbook, a leading creator platform for fitness, health, and wellness. Our mission is to help fitness creators build sustainable businesses, while enabling hundreds of thousands of users to live healthier lives. We are a fast-growing company in the fitness tech space, operating as a remote-first, product-driven team that values ownership, direct communication, and a strong growth mindset. We believe in “drivers, not passengers” — everyone is encouraged to take responsibility, think proactively, and act like an owner. ROLE OVERVIEW We’re looking for a Senior iOS Engineer to join our remote engineering team. You’ll work on meaningful, user-facing product features in our iOS app — building polished, performant, and reliable experiences that our users and creators rely on every day. You’ll collaborate closely with Product and Design to deliver solutions aligned with real customer needs. This role is best suited for a senior individual contributor who enjoys hands-on development, product problem-solving, and working in a fast-moving startup environment. RESPONSIBILITIES - Design and implement new iOS features with a strong focus on usability, clarity, and delivering value to real users. - Build and maintain robust, scalable mobile architecture (including networking, data persistence, and state management) that supports fast iteration and long-term maintainability. - Work closely with Product Managers and Designers to translate requirements into practical, well-scoped technical solutions. Provide input during planning to ensure features are feasible, maintainable, and aligned with user and business goals. - Ensure high-quality releases through clean, readable, and well-tested code. Participate in code reviews and contribute to shared standards around quality, testing, and maintainability. - Take ownership of the features you build. Identify issues or gaps, propose improvements, and iterate based on feedback. You’re comfortable working with ambiguity and adapting as requirements evolve. - Improve app performance and reliability by diagnosing bottlenecks, addressing crashes, and strengthening overall stability and user experience. REQUIREMENTS - 5+ years of professional software development experience, with a strong focus on iOS development. Proven experience shipping production iOS applications end-to-end. - Strong proficiency in Swift and modern iOS development practices. Ability to build responsive, user-friendly interfaces with attention to detail and performance. - Experience with modern iOS UI patterns, including handling complex navigation, animations, and edge cases in real-world production apps. - Active daily use of AI coding assistants (Claude Code, Codex, OpenCode, or similar) for development, debugging, and problem-solving. We expect engineers to leverage these tools to ship faster and work through complex problems. - Strong understanding of networking on iOS (REST/GraphQL), including authentication flows, caching strategies, error handling, and offline/unstable network scenarios. - Experience designing maintainable architectures (e.g. MVVM, Redux-style state management, Clean Architecture, or similar) and improving existing codebases over time. - Solid understanding of iOS performance and debugging tools (e.g. Instruments, crash reporting, profiling) and the ability to diagnose issues effectively. - Strong communication skills in English. Comfortable working in a remote, cross-timezone team and collaborating asynchronously. NICE TO HAVE - Experience with other frontend or mobile technologies, such as React Native or React.js, and an interest in cross-platform product development. - Experience with SwiftUI in production and building scalable design systems. - Experience integrating and maintaining third-party SDKs (analytics, payments, video, attribution). - Experience implementing and maintaining subscription flows on iOS - Familiarity with CI/CD for iOS (Fastlane, GitHub Actions, Bitrise, or similar) a…