Senior iOS Engineer, Passport & Commerce

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior iOS Engineer, Passport & Commerce based in the United States. This is a high-impact opportunity to build the iOS experiences that power account, identity, and commerce features for millions of users. You will join a newly established team shaping the technical foundations and roadmap for a growing product area. The role combines hands-on iOS engineering with end-to-end ownership of complex features, from technical design through launch and iteration. You will collaborate closely with backend, Android, web, product, design, and data science partners to deliver consistent experiences across platforms. As the team's iOS presence expands, you will help establish engineering patterns, raise technical standards, and influence key architectural decisions. This role is ideal for a senior engineer who thrives in a consumer-scale environment and enjoys building in an evolving, sometimes ambiguous space. Design, develop, test, and launch high-quality iOS features using modern declarative UI and unidirectional state-management architectures. Own complex product features end-to-end, from technical discovery and architecture through implementation, release, and ongoing iteration. Partner with product and design teams to translate concepts into polished, accessible, performant, and intuitive iOS experiences. Collaborate with backend, Android, and web engineers to define APIs, maintain consistent data and feature behavior, and achieve platform parity. Write clean, maintainable, well-tested code and actively contribute to technical and code reviews. Establish reusable iOS engineering patterns and technical foundations that other engineers can build upon as the team grows. Mentor fellow engineers and contribute to raising engineering standards and best practices across the team. Troubleshoot and resolve mobile performance, reliability, and production issues affecting large-scale consumer experiences. Contribute to team-level technical decisions and help shape the roadmap and architecture of a newly formed product organization. Requirements: 6+ years of professional iOS engineering experience, including experience shipping and maintaining features within a large-scale production consumer application. Strong proficiency in Swift and modern iOS development practices, including declarative UI frameworks such as SwiftUI. Hands-on experience with unidirectional state-management approaches such as MVI, MVVM, Redux-style architectures, as well as dependency injection. Proven ability to collaborate closely with backend and other platform engineers to design APIs and deliver consistent cross-platform experiences. Demonstrated track record of taking complex features from technical design through production launch and subsequent iteration. Experience mentoring engineers and influencing technical decisions beyond individual feature development. Strong understanding of mobile application performance, accessibility, reliability, and CI/release practices at scale. Ability to operate effectively in ambiguous or evolving environments, particularly when establishing new products, surfaces, or technical foundations. Strong communication and collaboration skills, with the ability to work effectively across engineering, product, design, and other technical disciplines. Must reside in a U.S. state where the employer has a registered entity. This remote-eligible role currently excludes Alaska, Mississippi, and North Dakota , with eligibility subject to change. Occasional travel to an office or team offsite may be required, depending on business and team needs. Benefits: Base salary range of $196,000–$227,000 USD , with actual compensation determined by factors such as experience, skills, training, market conditions, and business needs. Potential eligibility for performance bonuses and equity awards. Comprehensive employee benefits de