Top Senior iOS Engineer Jobs in San Francisco, CA

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.

Develop and maintain native iOS applications using Swift, focusing on performance, scalability, usability, and robust architecture. Partner with product, design, and engineering teams on planning and delivery; troubleshoot complex issues; write tests; maintain CI/CD workflows; and improve code quality. The role includes technical leadership, mentoring junior engineers, documentation, code reviews, and staying current with iOS technologies and development practices.

As a Staff Software Engineer (iOS), you will collaborate with teams to build mobile solutions for media manipulation, promote code quality, and shape the technical vision of VSCO's mobile platform.

Develop mobile applications for Android and iOS, including image and PDF text extraction. Responsibilities require Java development, Android/iOS SDK expertise, XML and JSON handling, SQLite and SQL database experience, and compatibility across devices and Android OS versions. Candidates must have published at least two image/PDF text-extraction applications.

Build a native iOS app from the ground up with system-level voice input (keyboard extension, Shortcuts, Siri), real-time audio capture and streaming, deep iOS integrations, and strong native performance.

Lead iOS application development, create innovative features, collaborate with cross-functional teams, and ensure high-quality standards in a supportive environment.

Lead hands-on development of user-facing Android and iOS applications, taking ownership from design through production release. Build maintainable, well-tested features, optimize performance, debug unfamiliar systems, and manage app-store publishing. Collaborate with product, design, backend, and users in an agile, remote environment. Use AI coding agents responsibly to accelerate implementation, testing, reviews, infrastructure work, and incident investigation.

Build, test, release, and maintain native Android and iOS applications across a portfolio of consumer mobile products. Use Kotlin, Swift, modern mobile frameworks, automated testing, analytics, experimentation, and AI coding agents to deliver high-quality software. Collaborate with product, design, marketing, operations, and engineering teams, measure user impact, manage app-store releases, and adapt across codebases and product pods.

Develop and maintain Rylo's iOS app focusing on intuitive UI, prototyping features, high performance, and quality. Collaborate with product and design, work with Objective-C and iOS SDK, and address video processing, multithreading, memory, caching, and networking challenges.

Design and build native iOS features for investment and cash accounts, write automated tests, integrate with design systems and backend APIs, own projects end-to-end, collaborate with cross-functional teams, mentor peers, and support production iOS app and CI through on-call rotations.

Own Android and iOS mobile development for a large consumer VPN product. Inherit and modernize existing codebases, integrate native VPN networking libraries, improve security, testing, CI/CD, release management, and app-store compliance. Collaborate with product, design, backend, DevOps, and marketing teams to deliver reliable user-facing features. Diagnose networking issues across mobile and Go components, optimize connection performance, and use AI coding agents responsibly.

The iOS Engineer will own the iOS app and SDK's architecture and performance, lead integrations with Apple frameworks, and enhance user experiences while ensuring successful App Store submissions.

As a Senior iOS Engineer, you'll build reliable and secure mobile experiences for OpenAI's products, focusing on performance, testing frameworks, and cross-functional collaboration.

Design and build native iOS apps and SDKs, develop iOS frameworks and UIs, integrate RESTful APIs, follow CI and unit testing best practices, work in an agile scrum team, provide iOS subject-matter expertise, and execute POCs for mobile payment initiatives.

Build and own mobile experiences for clinicians using Flutter, Swift/iOS, and Kotlin/Android. Develop AI-native workflows involving real-time transcription, ambient documentation, multimodal inputs, offline functionality, and intelligent recommendations. Collaborate with clinicians, product, design, AI, and backend teams from discovery through launch. Ensure performance, accessibility, reliability, analytics, testing, observability, and release readiness while contributing to mobile strategy and mentoring engineers.

Integrate secure identity and authentication capabilities into native iOS and Android applications supporting a Federal DoD ICAM platform. Responsibilities include implementing Okta SDKs, OAuth/OIDC, PKCE, FIDO2/WebAuthn, passkeys, CAC/PIV credentials, biometric authentication, secure token storage, enrollment and recovery workflows, and mobile security controls. The role also supports NIST compliance, Zero Trust principles, CI/CD, troubleshooting, and collaboration with Federal cybersecurity and mobile engineering teams.

Develop and maintain iOS applications using Swift or Objective-C. Translate requirements into system designs, support production, optimize performance, collaborate with clients and global teams throughout the SDLC.

Develop and maintain native iOS applications using Swift and Xcode; optimize performance; follow SDLC processes; collaborate with global teams and stakeholders; apply analytical skills and open-source practices.

Develop and maintain native iOS applications using Swift and Xcode, ensure performance management and follow SDLC practices, collaborate with global teams, and contribute to cross-functional development efforts.

Develop native iOS applications using Swift and Xcode, focusing on performance, following SDLC best practices, collaborating across global teams, and maintaining high code quality.

Lead native iOS UI development using Objective-C and Swift, optimize performance, fix bugs, use iOS frameworks (Core Data, Core Animation). Support hybrid apps (PhoneGap/Cordova) and responsive web (HTML5/CSS3/Bootstrap/Angular). Execute projects, mentor teams, produce thought leadership, training, knowledge artifacts, and assist in solution/IP creation. Role requires extensive travel.

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.

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

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

The Data Recovery Engineer will provide IT support and troubleshooting on Macintosh/iOS platforms, focusing on data recovery and excellent customer service.