Top Senior iOS Engineer Jobs in San Francisco, CA

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.

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.

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.

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.

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.

Develop and maintain mobile downloadable iOS applications using latest iOS SDKs. Apply Cocoa fundamentals and design patterns, participate in SDLC and project lifecycle activities, collaborate with diverse stakeholders, and work within the insurance domain in a global delivery environment.

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

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

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

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.

Develop and launch iOS applications, collaborating with designers and contributing to the full development cycle while following best practices.

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

As a Senior iOS Engineer, you will develop and enhance the iOS SDK, collaborate with teams on features, and provide mentorship.

Own and ship the Town iOS app end-to-end: architecture, performance, reliability, and UX. Build native mobile experiences that let users hand work to the assistant, optimize latency and security, and collaborate with product, design, and backend to deliver polished features.

Build and ship native iOS features for onboarding, accounts, cards, payments, transfers, rewards and AI-assisted journeys. Improve performance, reliability and UX; integrate APIs and authentication; collaborate with product, design, backend and AI teams; own app quality and production issue debugging.

Responsible for testing and automating tests for iOS mobile apps, requiring experience in mobile testing and development using Objective C and Swift.

As an iOS Engineer at Ramp, you'll develop and enhance the mobile app, establish engineering standards, and collaborate with cross-functional teams.