Top Senior iOS Engineer Jobs in San Francisco, CA

Lead development of scalable React Native applications, mentor team, drive code quality and collaborate across departments, focusing on AI-assisted development.

Lead technical direction and architecture for Neighborhoods mobile experiences across Cash App and Square. Drive cross-organizational mobile initiatives, stay hands-on in iOS development, partner with backend/web/Android teams, mentor engineers, and apply AI-assisted workflows to accelerate feature development and quality.

Lead technical direction and architecture for Neighborhoods mobile across Cash App and Square. Drive cross-organizational integration, remain hands-on in iOS development (SwiftUI, Workflow), apply AI-native engineering practices, mentor engineers, and collaborate with backend, web, Android, product, and design partners to deliver reliable, scalable mobile experiences.

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.

Build and maintain Redfin's iOS app features and infrastructure using Swift and SwiftUI. Collaborate with product, design, and engineering through code reviews, documentation, and testing. Contribute to experiments, leverage iOS best practices, and use approved AI code-generation tools. Participate in on-call rotations as needed and work hybrid from Seattle, San Francisco, or Detroit offices on Tuesdays and Wednesdays.

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

Lead architecture, build, test, and scale Gusto's iOS app and mobile infrastructure. Improve build pipelines, automated testing, release processes, and foundational services (push, accessibility, localization). Collaborate across product, design, security, and infrastructure teams; prototype, iterate, and launch customer-focused features while mentoring engineers.

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

Join a small iOS team to own end-to-end features for Handshake's student-focused app. Build in Swift and SwiftUI (with UIKit), wire up GraphQL/REST services, write view models and tests, ship weekly with feature flags and staged rollouts, and iterate using usage data. Receive mentorship from senior engineers and grow toward Engineer II.

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.

Lead cross-team iOS engineering for Neighborhoods across Cash App and Square: define architecture, stay hands-on with SwiftUI/Workflow codebases, deliver integrated loyalty/ordering features, mentor engineers, and adopt AI-native workflows to accelerate development and quality.

Lead design and implementation of Neighborhoods mobile experiences across Cash App and Square. Shape cross-team architecture, stay hands-on with iOS development (SwiftUI, Workflow), drive integrations for discovery, ordering, loyalty, and fulfillment, mentor engineers, and apply AI-assisted workflows to accelerate development and quality.

Develop and maintain iOS applications, ensure performance, collaborate on features, mentor junior engineers, and implement CI/CD practices.

As a Lead iOS Engineer, you'll code, analyze systems, enhance an iOS SDK, mentor other developers, and ensure robust software practices.

Develop business applications for iOS using Objective C and Swift. Requires 5 years of experience and a BSCS degree.

Looking for an Android and iOS Developer to work autonomously, making bug fixes and utilizing skills in RxJava and Dagger.

Lead technical strategy for iOS platform, build key infrastructure, ensure engineering excellence, and mentor senior engineers.

As a Staff iOS Engineer, you will lead mobile app architecture, collaborate with teams, improve development practices, mentor engineers, and stay updated with industry trends.

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.

Design and build e-commerce iOS applications, integrate with back-end services, ensure performance and responsiveness, collaborate to define and ship features, identify and fix bugs and bottlenecks, maintain code quality and automation, and lead and mentor junior developers.

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.

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.

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.

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.