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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Software Developer - iOS Apps - **Company:** Environmental Systems Research Institute, Inc. - **Location:** Portland, ME, United States - **Experience:** Expert - **Salary:** $123,136.0 - $202,488.0 - **Contract:** Permanent contract - **Skills:** Adobe InDesign, Application Programming Interfaces (APIs), IOS Applications, Apple IOS, Apple Xcode, App Store (IOS), Code Review, Data Structures, Data Synchronization, Github, Global Positioning Systems (GPS), Object-Oriented Software Development, Commercial Software, Performance Tuning, Wireless Sensor Networks, Software Engineering, Esri GIS (Software), Ios Frameworks, Git, Information Technology, Cocoa Touch, Hardware Infrastructure, Objective C++, Restful APIs - **Published:** August 27, 2026 - **Apply:** https://jobs.localjobnetwork.com/apply/add/88159021/1 ## About the Role * Be an Apple enthusiast and a game changer * 5+ years of commercial software development experience * You are eager to learn but you've got these things covered: + Objective-C and/or Swift + Xcode + Developing with the Cocoa and Cocoa Touch APIs + Object oriented design skills + Data structures and algorithms * App development issues related to performance optimization and caching * All the other important things that will help you be successful at Esri: + Good communication skills, + A team player who can also fly solo + The ability to thrive in an environment that changes often * Bachelor's degree in computer science, engineering, or mathematics * Did we mention you've gotta love iOS? Recommended Qualifications * Submitted apps to the App Store * Protocol oriented design skills * Prior experience building spatial/mapping applications or software components * Experience with security and/or native hardware components (GPS, camera, etc.) * Experience with one or more of the following technologies: GIS, RESTful web services, or Git * Master's degree in computer science, GIS, or related field Got a GitHub? Put it on your resume. Have an app in the App Store? Tell us which one(s). Let us see your work. ## Description Join Esri's Field Apps team and take the lead in building next-level iOS applications that empower professionals around the world to make critical decisions in the field. From conservationists tracking endangered species to emergency response teams managing natural disasters, your work will directly impact the tools that drive real-time, location-aware action in the field. As a Senior Software Developer, you'll design and implement intuitive, high-performance mobile apps using the latest Apple technologies. You'll focus on solving complex challenges like offline data synchronization, real-time mapping, and seamless device integration, all while collaborating with a talented team to build solutions that are as reliable as they are impactful. Help shape the future of field mobility on iOS and create apps that truly make a difference! Esri has a Relocation Assistance Program and can provide support with relocating to the Portland, ME area for this position. Responsibilities * Design, develop, and test functionality for the latest iOS apps * Join forces with other developers and designers throughout the development process * Understand user requirements; these apps have to meet real-world scenarios * Develop software for use in field mapping, data collection, sensor networks, street navigation, and more * Solve complex problems with design, development, and user experience * Be an Apple advocate within Esri and at conferences; help us grow our iOS development expertise * Develop strong skills and best practices on the team through participation in design and code reviews ## Related Videos - [Xcode development redefAIned](https://www.wearedevelopers.com/videos/100195-xcode-development-redefained) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Innovating Developer Tools with AI: Insights from GitHub Next](https://www.wearedevelopers.com/videos/1268-innovating-developer-tools-with-ai-insights-from-github-next) - [There's an app for that - on the role of cross platform development in the app development ecosystem](https://www.wearedevelopers.com/videos/278-there-s-an-app-for-that-on-the-role-of-cross-platform-development-in-the-app-development-ecosystem) - [Harnessing Apple Intelligence: Live Coding with Swift for iOS](https://www.wearedevelopers.com/videos/1515-harnessing-apple-intelligence-live-coding-with-swift-for-ios) - [Bringing AI Model Testing and Prompt Management to Your Codebase with GitHub Models](https://www.wearedevelopers.com/videos/1536-bringing-ai-model-testing-and-prompt-management-to-your-codebase-with-github-models) ## Related Articles - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [How to Answer the Interview Question: “Why Do You Want to Be a Software Engineer?”](https://www.wearedevelopers.com/magazine/392-how-to-answer-the-interview-question-why-do-you-want-to-be-a-software-engineer) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Dev Digest 118 - not a total recall](https://www.wearedevelopers.com/magazine/452-dev-digest-118-not-a-total-recall) - [Dev Digest 103 - Superb Owl Trafficking](https://www.wearedevelopers.com/magazine/388-dev-digest-103-superb-owl-trafficking)