Top Senior iOS Developer Jobs

Develop and maintain complex iOS applications from the ground up, integrate APIs, architect full-lifecycle solutions, and improve development workflows. The role requires Swift and SwiftUI expertise, testing across unit, integration, and UI levels, CI/CD pipeline development, and strong knowledge of Apple’s Human Interface Guidelines. The senior developer will mentor iOS engineers, conduct code reviews, collaborate with stakeholders, and contribute to agile product development.

Design, build, and maintain secure, high-performance native iOS checkout applications. Translate product requirements into technical designs, collaborate across engineering and product teams, write tested and observable code, resolve complex production issues, and improve reliability and scalability. Integrate AI/ML capabilities responsibly while maintaining privacy and security standards.

Develop and ship high-performance iOS applications and camera experiences for Snapchat. Responsibilities include designing and implementing tested Objective-C software, launching features, evaluating technical tradeoffs, collaborating with Design, conducting code reviews, and using AI tools while maintaining strong standards for correctness, security, performance, and scalability.

Develop and modernize native iOS applications for Grainger’s Sales Enablement Mobile Team using Swift and SwiftUI. Build scalable, accessible, high-performance interfaces and support APIs through BFF architectures and Python. Lead architecture decisions, CI/CD improvements, testing, observability, security, and performance optimization. Mentor engineers, promote clean code and trunk-based development, and collaborate across teams to deliver production-ready mobile tools.

Leads development of secure, scalable mobile applications for iOS and Android. Responsibilities include writing and reviewing production code, designing complex front-end solutions, integrating native device capabilities, optimizing performance, implementing automated testing, collaborating with UX teams, and supporting SRE practices. The role also involves advising stakeholders on technology adoption, using AI-assisted development tools responsibly, and following Agile and continuous delivery practices.

Lead the architecture and evolution of native iOS foundations supporting seller-facing applications. Identify systemic problems, define platform strategy and standards, build prototypes and reference implementations, lead multi-quarter migrations, and establish practices for quality, testing, observability, release safety, and maintainability. Develop senior engineers and create scalable ownership models across teams.

Design, develop, and maintain low-level C/C++ and Linux systems software for Cisco IOS-XE image installation, upgrades, provisioning, and recovery. Lead technical features through production, improve reliability and performance in high-availability distributed systems, conduct code reviews, identify risks, and mentor engineers. Collaborate across teams using user-centered Design Thinking principles.

Lead development of native iOS and Android BLE SDKs connecting EEG headbands and wearables. Own connection reliability, data throughput, battery performance, reconnection, background operation, observability, and streaming robustness across devices and operating systems. Collaborate on firmware interfaces and expose device capabilities to React Native applications through tested native modules. Improve diagnostics, support clinical operations, and shape the mobile platform roadmap.

Design, build, and scale complex iOS application features using Swift. Make architectural decisions, improve performance and reliability, resolve technical issues, support production incidents, and collaborate with Product, Design, QA, and Engineering. Mentor engineers through reviews and coaching, contribute to technical initiatives, and help deliver scalable solutions for construction teams.

Drive projects that improve AI agent effectiveness across software development workflows. Build and maintain reliable developer tooling, iOS frameworks, libraries, build systems, and testing infrastructure. Collaborate with cross-functional partners to improve developer productivity, increase AI agent efficiency and reliability, and deliver roadmap initiatives across large-scale codebases.

Design, develop, and maintain secure native iOS applications using Swift and Objective-C. Own architecture, implementation, performance optimization, debugging, automated testing, CI/CD, App Store releases, and technical documentation. Integrate APIs, authentication, and secure storage while collaborating with Product, Design, QA, and backend teams. Contribute to code reviews, technical direction, and adoption of emerging iOS technologies and AI-assisted development tools.

Own iOS technical direction for Everand and Scribd growth, retention, and monetization features. Build subscription, paywall, and in-app purchase flows using StoreKit; ship experiments; integrate APIs; improve stability and reduce technical debt. Collaborate with backend, web, and Android teams, lead technical initiatives, and mentor engineers while delivering scalable Swift applications.

Build and maintain iOS applications supporting Aetna Digital healthcare members. Responsibilities include developing features and tests, collaborating with product and design teams, monitoring and troubleshooting production applications, and improving application stability, performance, maintainability, and scalability. The role requires extensive Swift and iOS development experience, SwiftUI expertise, testing experience, and accessibility knowledge.

Design, build, and maintain the Circuit Desktop app for macOS and Windows using Electron or Tauri and an Angular/TypeScript UI. Implement OS integrations (system tray, notifications, deep linking, global shortcuts), installers, code signing, auto-updates, IPC/security, and offline storage. Integrate with REST/Node.js services and GCP, optimize performance and memory, ensure WCAG 2.2 accessibility, and collaborate with design, backend, and QA to deliver a cross-platform CI/CD pipeline.

Build and maintain native iOS applications for medical ultrasound imaging. Responsibilities include writing modern Swift code, evolving architecture, collaborating with product, design, clinical, hardware, cloud, AI, and imaging teams, developing tested user experiences, integrating device and advanced technologies, and mentoring engineers. The role involves SwiftUI, UIKit, reactive programming, GraphQL, deep learning applications, telemedicine, and complex internal Swift packages.

Lead development of the Twist native iOS app from initial development through App Store approval and ongoing maintenance. Own app performance, user experience, release submissions, SDK development, and prioritization decisions. Work independently in an evolving codebase, make product decisions with incomplete specifications, and collaborate with other engineering disciplines. Experience with streaming apps, analytics, payments, authentication, identity management, or embeddable SDKs is preferred.

Build and lead development of production-grade iOS applications using modern Swift practices. Collaborate with Product, Design, and Engineering to deliver customer-focused projects, make architectural decisions, conduct code and design reviews, write tests, and maintain operational excellence. Mentor junior engineers, document systems, remove development bottlenecks, and contribute to scalable mobile platform improvements.

Leads iOS engineering initiatives from planning through release, collaborating with Product and Design to build scalable, high-quality mobile experiences. Responsibilities include architecture, technical decision-making, code and design reviews, testing, monitoring, documentation, operational excellence, project decomposition, mentoring junior engineers, and improving developer productivity. The role requires deep Swift, SwiftUI, Swift Concurrency, iOS architecture, App Store deployment, REST integration, and Agile development experience.

Lead iOS engineering for Compass’s mobile platform, independently defining and delivering complex projects from planning through release. Collaborate with Product, Design, and Engineering, guide architectural decisions, conduct code and design reviews, ensure testing and operational excellence, document systems, remove development bottlenecks, and mentor junior engineers. Build scalable production applications using modern Swift, SwiftUI, Swift Concurrency, RESTful services, and Apple deployment practices.

Senior iOS engineer responsible for architecting, building, and maintaining production mobile applications. Leads complex projects from planning through release, makes technical trade-offs, conducts code and design reviews, writes tests, improves operational excellence, and mentors junior engineers. Collaborates with Product and Design to shape roadmaps and customer experiences while driving scalable architecture, documentation, monitoring, and developer-experience improvements.

Design, develop, test, deploy, and maintain production iOS applications using Swift and SwiftUI, while contributing to Android applications with Kotlin and Jetpack Compose. Lead architecture and implementation decisions, collaborate with clients and multidisciplinary teams, estimate work, review code, troubleshoot issues, support releases, improve engineering practices, and mentor engineers across mobile projects.

Develop and maintain Swift-based iOS applications for Abercrombie and Hollister, contributing across discovery, development, testing, release, and support. Collaborate with product, design, Android, and backend teams to deliver scalable retail experiences. Improve performance, reliability, architecture, and developer experience while integrating AI capabilities such as personalization, recommendations, conversational features, and on-device machine learning.

Build and evolve Medal’s iOS experience, including real-time recording, video clipping, social feeds, content discovery, and chat. Own projects end-to-end, shape mobile architecture and product direction, collaborate with backend teams, and use analytics, testing, user feedback, and crash data to improve quality. The role requires strong Swift, UIKit, SwiftUI, concurrency, Combine, REST API, and complex real-time or media application experience.

Lead native iOS payment engineering for Clover POS platforms, developing BLE and EMV reader integrations, supporting payment transaction flows, tokenization, refunds, cryptography, and hardware certification. Debug reader firmware and performance in an on-site lab while coordinating with Core Payments, certification teams, and global engineering groups. Serve as the US-based iOS payments subject matter expert.

Architect, build, and maintain iOS connectivity software linking WHOOP hardware, mobile apps, and cloud services through BLE, Wi-Fi, and other protocols. Improve reliability, performance, power efficiency, background processing, synchronization, and data transfer. Establish scalable, testable architecture; reduce technical debt; improve testing and code review standards; coordinate with firmware and cross-functional teams; and manage iOS release, signing, testing, and App Store submission processes.