Top Senior iOS Developer Jobs in Seattle, WA

Founding iOS Engineer to build the app's core intelligence layer. Must implement production CallKit and on-device continuous Speech Framework recognition, integrate with SwiftUI/CoreData, and optionally add Dynamic Island Live Activity via WidgetKit. Equity-only founding role; product details under NDA.

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.

Senior iOS developer to design and build maintainable, performant iOS apps using Swift/SwiftUI and modern concurrency. Build core UI infrastructure, write automated tests (XCTest/XCUITest), participate in code reviews, release apps to the App Store using CI/CD tooling, and partner cross-functionally to define mobile standards.

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 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.

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

Develop and ship production-quality mobile apps using React Native and native iOS/Android technologies. Write performant, maintainable code, support prototyping, test and debug across devices, and translate product requirements into working features.

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

Lead development of the companys first iOS app, owning architecture, state, navigation, offline support, CI/CD and App Store delivery. Build polished Swift/SwiftUI user experiences, collaborate with design and product, use AI coding tools to iterate quickly, and establish mobile standards and tooling as the team grows.

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.

Develop and maintain iOS applications using Swift and SwiftUI. Implement reactive code with Combine, follow design patterns, write UI/unit tests, profile and fix performance with Xcode Instruments, manage repos with GitHub, integrate crash reporting and analytics, and distribute frameworks via SPM/CocoaPods.

Design, build, and maintain high-quality native iOS applications using Swift and iOS frameworks. Implement UI with UIKit/SwiftUI, handle concurrency, integrate RESTful APIs, ensure unit testing, memory management, and automated code quality in CI/CD pipelines for high-traffic cloud-backed services.

Senior iOS Developer responsible for building and maintaining native iOS apps using Swift and SwiftUI. Work includes iOS SDK and framework integration, multi-threading, memory management, unit testing, RESTful API integration, cloud/distributed services, CI/CD automation, code quality tooling, and version control collaboration.

Design, build, and maintain scalable, high-performance iOS applications using Swift. Deliver end-to-end features, integrate with back-end services, implement animations and Auto Layout, ensure test coverage and CI/CD, profile and optimize performance, and mentor team members.

Lead ownership of the iOS platform: build offline-first apps with local persistence and sync, real-time communication, media capture/uploads, location/scheduling, and polished, accessible UI/UX for multiple user roles.

As a Senior iOS Engineer, you will lead product decisions, ship production code, and enhance app architecture within a dedicated team at Speechify.

The Senior iOS Engineer will lead engineering decisions, participate in product development, ship production code, and enhance the iOS app architecture.

The Core iOS Senior Engineer will lead mobile development projects, troubleshoot issues, and contribute to code reviews, requiring strong experience in Objective-C and mobile software development.

Senior iOS Developer to design and build secure, high-performance iOS apps using Swift (SwiftUI/UIKit). Implement webview integrations (WKWebView/ASWeb), ASWebAuthenticationSession for OAuth/SSO, JavaScript interop, and native features (camera, push, maps). Ensure responsive web content handling and secure data management. Remote role but must be Bangalore-based with weekly (~1 hour) client office visit to collect a device.

The Senior iOS Engineer will lead product decisions, ship code for the iOS app, and enhance the app's architecture, ensuring a user-centric experience.

The Senior iOS Engineer will drive key engineering decisions, enhance the iOS app, and engage in product strategy discussions. Responsibilities include shipping production code and maintaining app architecture.

As a Senior iOS SDK Engineer, you'll design, implement, and optimize core SDK features, maintain integrations with ad networks, and improve SDK usability by collaborating with publishers and product teams.

Design, build, and maintain high-quality iOS apps. Collaborate with PMs and designers, mentor engineers, and manage code ownership.

The role involves designing, developing, and maintaining iOS applications, driving technical architecture, and promoting knowledge sharing within the team.