Top Senior iOS Engineer Jobs in San Francisco, CA

Lead architecture and development of Credit Genie’s iOS apps using Swift (Swift 6). Implement UX from design mocks, collaborate with product/marketing/engineering, improve development practices, mentor engineers, contribute across the development lifecycle, and evaluate emerging technologies to scale the app.

Build and maintain production-grade iOS applications using Swift and SwiftUI, integrating AI features through backend APIs. Design reliable AI interaction patterns, optimize performance, memory, battery, and latency, and support monitoring, feedback capture, and root-cause analysis. Collaborate with backend and ML engineers on API behavior, reliability, and user trust while shipping stable App Store experiences.

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.

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

Lead development and improvement of a production iOS app used by tens of thousands. Own architecture, UI, networking, local persistence, and automated tests. Collaborate with Android and backend teams, diagnose async and device-specific issues, use Xcode Instruments, CI, and crash/analytics tooling, and drive product-minded technical decisions.

Build and maintain performant, accessible consumer-facing experiences for Netflix’s iOS app using Swift and GraphQL. Collaborate with product managers, designers, and engineers to scope projects, refine interfaces, develop shared infrastructure, and make architectural trade-offs. Teams may focus on client foundations, server-driven UI, advertising frameworks, or ad insertion. Responsibilities include writing robust maintainable code, automation, documentation, and supporting high-quality, scalable mobile experiences.

Design and develop mobile applications as a Senior iOS Engineer, leading architectural decisions and collaborating with teams to create user-friendly products. Ensuring performance and quality through continuous improvement while mentoring others in the engineering team.

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

Lead design and development of Amplitude's core iOS SDKs (Analytics, Session Replay), set technical direction and cross-SDK architecture, improve performance, reliability, and developer experience, design stable public APIs and shared infrastructure, collaborate with Product and Support, and lead cross-team technical decisions, testing, documentation, and tooling.

Lead quality strategy and testing for the iOS Games SDK. Design and implement automated tests, build supporting tools and infrastructure, debug SDK issues, perform manual testing for hard-to-automate features, create test games and samples, and analyze operational data to improve test stability and developer experience.

Senior native mobile developer responsible for designing, building, publishing, and maintaining iOS and Android applications. Collaborate with cross-functional teams, implement performance optimizations, and own mobile app lifecycle from design through App Store/Play Store release.

Design, implement, test, and modernize iOS graphics systems for a rich canvas (ink, images, PDFs, text, animation). Optimize GPU-based 2D rendering to meet soft real-time targets, collaborate across engineering, design, and product, mentor peers, perform code reviews, and implement research-driven features.

Design, build, and own iOS and Android test automation in CI to provide quality signals for nightly, weekly, and release builds. Automate real user flows, triage failures, improve test robustness, sync test artifacts with release processes, and collaborate with engineers to shift checks into lower test layers.

Build and maintain high-performance iOS mobile applications using React Native. Collaborate with designers, product, and backend teams to implement features, integrate RESTful APIs, optimize performance, debug issues, write clean code, participate in code reviews, and keep up with mobile development best practices.

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.

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.

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.

Lead design and development of high-performance, offline-capable iOS (iPad) and Android apps for mission-critical drone operations. Build real-time maps, video streaming, telemetry overlays; integrate with hardware; optimize battery, memory, and latency; implement offline-first sync; collaborate with backend/hardware teams; mentor engineers and establish CI/CD, testing, and security best practices.

Own and improve Sekai's iOS app: ship fast, polished consumer features; ensure performance, reliability, and release velocity; apply modern Apple platform practices; collaborate with Product, Design, Backend, and Mobile teams; and use AI tools to accelerate development and iteration.

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.

Lead multi-platform Search product and front-end strategy across iOS, Android, and Web. Design and ship end-to-end search and shopping experiences, partner with product, design, ML, infra, and back-end teams, use AI/LLMs to prototype and iterate, define architecture and best practices, mentor engineers, and drive measurable improvements via experimentation and data.

The Senior iOS Developer will lead mobile engineering projects, troubleshoot production issues, and develop scalable applications using Objective-C, with a focus on customer experience and supporting business solutions.

Reverse engineer, debug, develop, and test virtual iOS devices on a proprietary hypervisor. Port new iOS versions, build virtual peripherals/drivers, optimize performance and reliability, create automated test infrastructure, collaborate with hardware modeling, QA, and product teams, and produce internal technical documentation.

As a Senior iOS Engineer, you'll enhance user experiences, lead product direction, maintain the design system, and mentor engineers.

The Senior iOS Software Engineer will develop high-quality features for the native iOS app, optimize performance, conduct code reviews, and collaborate extensively with cross-functional teams.