Top iOS Developer Jobs in Denver & Boulder, CO

As an iOS Engineer at TrainingPeaks, you will develop mobile experiences, optimize user engagement, and enhance iOS architecture while mentoring team members and ensuring high-quality features are delivered.

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

Design, build, and maintain high-performance native iOS applications. Collaborate with cross-functional teams to define and ship features, ensure app performance and responsiveness, fix bugs, integrate RESTful APIs and third-party libraries, participate in code reviews, and evaluate new technologies to improve development efficiency.

Senior iOS developer to design and build maintainable, performant iOS apps using Swift/SwiftUI and modern concurrency. Build core UI infrastructure, write automated tests (XCTest/XCUITest), participate in code reviews, release apps to the App Store using CI/CD tooling, and partner cross-functionally to define mobile standards.

Senior iOS engineer to develop and maintain a Swift-based player SDK powering video playback on iOS, iPadOS, and tvOS. Responsibilities include API design, AVFoundation media integration, performance optimization, production support, mentoring, and collaborating with cross-functional teams to ensure reliable, high-quality streaming and ad insertion.

As a Senior iOS Engineer, you will lead the iOS development, establish the architecture, collaborate with stakeholders, and implement high standards in software design and performance.

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.

Responsible for the development and maintenance of iOS applications, focusing on performance, user experience, and collaboration with design teams.

Lead the iOS application development, guide the team, ensure app performance and scalability, and collaborate on new features.

Design, build, and maintain an iOS app using Obj-C and Swift. Collaborate with teams, debug issues, and refine features.

As an iOS Engineer, you will develop and maintain features for the Oura app, collaborating with various teams to enhance user experience and code quality.

The iOS Engineer will handle full lifecycle development, including requirements gathering, designing solutions, coding, testing, implementation, and support.

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 and SwiftUI. Implement reactive code with Combine, follow design patterns, write UI/unit tests, profile and fix performance with Xcode Instruments, manage repos with GitHub, integrate crash reporting and analytics, and distribute frameworks via SPM/CocoaPods.

Design, build, and maintain high-quality native iOS applications using Swift and iOS frameworks. Implement UI with UIKit/SwiftUI, handle concurrency, integrate RESTful APIs, ensure unit testing, memory management, and automated code quality in CI/CD pipelines for high-traffic cloud-backed services.

Senior iOS Developer responsible for building and maintaining native iOS apps using Swift and SwiftUI. Work includes iOS SDK and framework integration, multi-threading, memory management, unit testing, RESTful API integration, cloud/distributed services, CI/CD automation, code quality tooling, and version control collaboration.

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.

Senior iOS engineer responsible for building and maintaining Dick's Sporting Goods and Golf Galaxy mobile apps using SwiftUI and MVVM. Collaborate with designers, product managers, testers, and engineers to design, implement, test, and ship features, diagnose and fix defects, drive roadmap priorities, and mentor junior teammates while supporting program management and requirements gathering.

As a Senior iOS Engineer, you will lead engineering decisions, ship production code for the Speechify iOS app, and enhance the app's architecture. You'll work in a collaborative product team, focusing on user experience and product development.

The Lead Software Engineer for Mobile iOS will design, test, and deliver applications, oversee software maintenance, collaborate on mobile experiences, and mentor junior engineers, utilizing Swift and modern Apple frameworks to enhance user experiences.

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.

As a Senior Software Engineer, you'll enhance mobile Wikipedia experiences, lead project implementations, and mentor team members while collaborating across departments to prioritize and deliver high-quality features.

Senior iOS hybrid developer to build and maintain iOS apps with Swift/SwiftUI or UIKit and Xcode; implement WKWebView-based hybrid features, ASWebAuthenticationSession OAuth/Web SSO, and secure JavaScript integrations; integrate native capabilities (camera, media capture, push notifications, maps/location); ensure responsive web content and secure data handling.

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.

Lead the iOS experience across three connected hardware products by architecting a shared platform (connectivity, device state), driving provisioning/pairing flows (Wi‑Fi/BLE), partnering with product/design/firmware/backend teams, adopting and governing AI coding tools, and building the team and modular codebase to ship App Store releases.