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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Ios Engineer - **Company:** Eleos Technologies, LLC - **Location:** Denver, CO, United States (Remote available) - **Experience:** Expert - **Salary:** $150,000.0 - $180,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Artificial Intelligence, Android Software Development, Apple IOS, Apple Xcode, App Store (IOS), Automation of Tests, Unit Testing, C++ (Programming Language), Software Quality, Code Review, Document Capture Software, Github, Monitoring of Systems, Microsoft UI Automation, Routing, Memory Leaks, Software Engineering, SQLite, TypeScript, Data Logging, Uikit, Swiftui, Large Language Models, Adobe, Core Data, Information Technology, Objective C++ - **Published:** July 29, 2026 - **Apply:** https://jobs.lever.co/eleostech/b4866f22-fab3-4f84-abec-6e7447a51493/apply?lever-origin=applied&lever-source%5B%5D=BuiltInNationwide ## About the Role We're looking for a senior engineer who can help maintain, evolve, and improve our iOS app, which is the single pane through which about half of our users experience our core product. (The other half use Android!) We're looking for a product-minded engineer who wants to understand the problem behind the requirement, not just implement the requested solution. You'll partner closely with members of the team to refine ideas, identify edge cases, and suggest approaches that may not have been apparent when the work was originally defined. You should be comfortable asking thoughtful questions, respectfully challenging assumptions, and presenting technical tradeoffs in a way that helps the team make better decisions. We value engineers who take ownership of the outcome, not just the completion of the ticket, and who remain involved through testing and real world feedback. You should be extremely comfortable working with Xcode, implementing and evolving user interfaces with both UIKit and SwiftUI, managing network requests and model state, and persisting to disk using Core Data or SQLite. You should have experience working with both Swift and Objective-C, as we have a mixture of both. (We write almost all new code in Swift, but as a small team, we're in no hurry to rewrite battle-tested Objective-C portions of the app until there's a compelling reason to do so.) We'll work together and pair often to get you ramped up, and the nature of our product means you'll continue to work closely with the whole team to move it forward even as you settle in. We'd like someone who's both ready to teach others (you'll know things we don't!) and learn from co-workers in a fun, productive, and respectful environment. You must live in the United States to be eligible for this role., * 4+ years professional experience building or maintaining a shipping native iOS app in some mixture of Swift and Objective-C, including ownership of substantial features or technical systems * Ability to turn product requirements into technical and UX options * A collaborative mindset and willingness to respectfully challenge requirements and surface overlooked edge cases and recommend simpler or more valuable solutions * Strong ownership instincts that follows the work from planning, implementation, to ongoing support once released * Experience writing UI automation tests * Ability to diagnose nondeterministic failures involving async behavior, networking, and differences between simulators and real devices * Effectively use Xcode's Instruments suite to diagnose and fix bottlenecks, UI hitches, and memory leaks * Experience diagnosing issues using crash reporting, logging, analytics, and CI or automated test output * Able to balance human- and LLM-driven software development workflows and bring experience, judgement, and curiosity to the process while retaining ownership of the output and results * The ability to quickly convey ideas, opinions, and technical details in written English * Able to work 9-5 Eastern, Central, or Mountain Time, to facilitate real time collaboration when needed, * Android development experience * Experience writing JavaScript or TypeScript * C++, C, Rust, or Zig skills * Experience with GIS, mapping, or location-driven apps * Maps, routing, navigation, geofencing * Document capture, barcode scanning, image processing * Dynamic type scaling and other adaptive improvements for accessibility, As a Senior iOS Engineer, you will develop advanced Swift and SwiftUI applications, review code, mentor junior developers, and collaborate with teams to deliver quality work under deadlines. ## Description Our app is more than the usual "CRUD and chat": in addition to industry-leading truck navigation and planning tools, we've got advanced algorithms for identifying the best and safest vehicle route, document scanning, and more-all on the device. As a senior member of our iOS team, you'll get to leave your mark across the app's architecture, UI, and all the way down to the database and network guts. You'll work directly with peers who maintain our Android app and the server systems that provide our customers with a stable API and handle user data synchronization. Tens of thousands of people across the country rely on our app to do their jobs, and we take quality seriously. We have an automated acceptance test suite we run in a cloud-hosted provider, plus a great dedicated QA team responsible for manual testing and helping reproduce issues reported from the field. You'll write automated tests for the code you write and work to both share and expand your skills around automated testing. We have CI that produces builds for the whole team to try within a few minutes of a commit or pull request being opened and a similar process for cutting release-ready builds for distribution, so you can generally stay focused on the work you love and not Xcode toil., Senior iOS developer responsible for building and maintaining iOS apps using Swift and SwiftUI. Work includes implementing Combine-based event handling, UIKit integration, writing UI/unit tests, performance profiling with Xcode Instruments, using dependency managers, code reviews on GitHub, and integrating analytics and crash monitoring tools. Top Skills: Adobe AnalyticsAppdynamicsCheckmarxCocoapodsCombineCrashlyticsFirebaseGitLaunchdarklyNewrelicObjective-CSonarqubeSwiftSwift Package ManagerSwiftuiUikitXcode InstrumentsXctestXcuitest MartianCraft, In-Office or Remote Mid level Mid level Software Drive the development and maintenance of a native iOS app, collaborate with teams, build features, and ensure code quality. Top Skills: BitriseCore DataGitInstrumentsIos FrameworksObjective-CSwiftSwiftuiUikitXctest What you need to know about the Colorado Tech Scene With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation. Key Facts About Colorado Tech * Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey) * Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3 * Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech * Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook) * Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures * Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute ## Related Videos - [SwiftUI In Production](https://www.wearedevelopers.com/videos/134-swiftui-in-production) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [3x Performance: A Humbling Journey](https://www.wearedevelopers.com/videos/100165-3x-performance-a-humbling-journey) - [Introduction to TXT](https://www.wearedevelopers.com/videos/30-introduction-to-txt) - [Unsolved mysteries between Usability and Accessibility in iOS](https://www.wearedevelopers.com/videos/737-unsolved-mysteries-between-usability-and-accessibility-in-ios) - [NoCode LiveCode: Leveraging AI Tools to Craft Fully Functional Apps!](https://www.wearedevelopers.com/videos/1169-nocode-livecode-leveraging-ai-tools-to-craft-fully-functional-apps) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [A Guide to Choosing the Right Tools for App Developers](https://www.wearedevelopers.com/magazine/391-a-guide-to-choosing-the-right-tools-for-app-developers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 118 - not a total recall](https://www.wearedevelopers.com/magazine/452-dev-digest-118-not-a-total-recall) - [Cross Platform Mobile Development Frameworks to Use in 2025](https://www.wearedevelopers.com/magazine/404-cross-platform-mobile-development-frameworks-to-use-in-2025)