Top iOS Developer Jobs in Chicago, IL

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.

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.

The iOS Developer will lead frontend development, participate in design meetings, and collaborate with UX teams, requiring mobile development expertise.

Build and improve Trala’s iOS violin-learning app, including lesson functionality, iPad support, product experiments, and algorithms that analyze raw audio to detect beginner playing mistakes and provide immediate feedback.

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.

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

Design, build, and maintain patient-facing iOS applications and clinician tools; optimize real-time video/communication features; contribute to backend services (Python/TypeScript) and AWS infrastructure; improve app performance, architecture, testing, and reliability; collaborate with Product, Design, and Clinical teams and help establish engineering best practices.

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.

Build and maintain mobile applications using React Native and native iOS/Android technologies. Write performant, maintainable code, participate in product and platform design discussions, support prototyping and internal testing, and test/debug apps across many devices. Ship production-quality mobile apps; published apps preferred.

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

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 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.

Lead and mentor iOS development teams to design, build, test, release, and support high-quality mobile applications. Drive architecture, code reviews, CI/CD adoption, production troubleshooting, and cross-functional collaboration to meet business and security standards.

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.

Build and enhance native GFiber iOS app features using Swift and SwiftUI. Collaborate with product and design, implement modern concurrency patterns, maintain automated tests, mentor engineers, perform code reviews, and improve mobile architecture and CI/CD practices to deliver reliable customer experiences.

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.