Top iOS Developer Jobs in Seattle, WA

As an iOS Engineer on the Buyer Growth team, you will lead growth initiatives, develop features for our iOS app, and collaborate with various teams to improve user acquisition and retention.

Design and implement high performance iOS applications, ensure code quality, and utilize AI tools for scalable mobile services. Requires extensive experience in software development, especially with iOS and Objective-C.

Build and lead the development of Sesame's iOS companion app while collaborating with engineering, design, and product teams to enhance user experience.

The iOS Engineer will build foundational Swift frameworks, enhance app performance and reliability, develop internal tooling, and collaborate with product engineering teams.

The iOS Developer will be responsible for app development, testing, and debugging, utilizing Agile methodologies and various tools throughout the product lifecycle.

The iOS Developer will design, develop, test, and maintain applications on iOS, ensuring quality and performance while collaborating in Agile teams.

The iOS Developer will focus on native iOS app development, requiring expertise in building customer-facing applications using Swift. Candidates must have a Computer Science degree and 8-10 years of experience.

The iOS Developer will build customer-facing native apps, develop mobile applications interfacing with RESTful services, and ensure performance and usability while maintaining high availability and uptime for solutions.

Responsible for the development and maintenance of iOS applications, focusing on performance, user experience, and collaboration with design teams.

Lead the iOS application development, guide the team, ensure app performance and scalability, and collaborate on new features.

Design, build, and maintain an iOS app using Obj-C and Swift. Collaborate with teams, debug issues, and refine features.

As an iOS Engineer, you will develop and maintain features for the Oura app, collaborating with various teams to enhance user experience and code quality.

As a Senior iOS Developer, you'll release features weekly, collaborate closely with product and design, and improve systems for users.

As a Lead Mobile Developer, you will design and maintain iOS apps, mentor developers, optimize performance, and integrate with backend services while collaborating with cross-functional teams.

As an iOS Engineer, you will build the Sesame app for wearable devices, collaborating with design and firmware teams to create a seamless user experience while maintaining code quality and performance.

As a Senior iOS Engineer, you will lead the iOS development, establish the architecture, collaborate with stakeholders, and implement high standards in software design and performance.

Build and maintain high-quality iOS applications using Swift. Implement features, write multithreaded asynchronous code, optimize performance, create XCTest coverage, perform code reviews, monitor logs/metrics, and collaborate using standard tools. Leverage AI coding tools and follow modern architectures (MVVM) and CI/CD practices.

Design, develop, and deliver scalable, high-performance iOS features for the T‑Life app using Swift and modern Apple frameworks. Integrate RESTful and AI-enabled backend services, lead medium-to-large initiatives, ensure quality via testing and CI/CD, mentor junior engineers, produce technical documentation, and drive operational stability and performance optimization while maintaining App Store and security compliance.

Lead technical strategy and architecture for core iOS frameworks, native video playback, and hybrid WebView integrations. Build WebView infrastructure and bridges, optimize performance at scale, develop automated testing and developer tooling, mentor iOS engineers, and drive cross-organizational architectural decisions to improve velocity and maintainability.

As a Mobile Engineer III, iOS, you'll design, maintain, and improve iOS applications, collaborating with cross-functional teams and ensuring high reliability and performance.

The Sr Software Engineer designs, implements, and deploys software solutions, collaborates on technical projects, and mentors others while driving innovation in technology strategies.

Build and enhance iOS applications using cutting-edge technology, collaborating with various teams to develop user-friendly mobile experiences and optimize app performance.

The Senior iOS Engineer will lead engineering decisions, actively ship production code, maintain complex app architecture, and shape product roadmaps.

As an iOS Engineer at Geo, you will develop user interfaces, own the app architecture, and write high-performance code.

Lead development of native iOS features (food tracking, activity logging, weight trends, AI-driven insights), deliver premium UI/UX with modern Apple frameworks, own flagship initiatives (Lock Screen Widgets, Live Activities, health data integrations), shape app architecture and standards, and collaborate cross-functionally while mentoring engineers.