Description We are offering a long-term contract employment opportunity for a Mobile Developer to join our team located in Lombard, Illinois. Our industry requires a Mobile Developer to address productivity and communication issues with our current offshore resources. The selected candidate will be part of a small team and will have the flexibility to work off-hours depending on project needs. Key Responsibilities: + Design, develop, and maintain high-quality, performant, and user-centric iOS applications. + Integrate Firebase capabilities such as Authentication, Firestore/Realtime Database, Cloud Messaging, Analytics, Crashlytics, and Remote Config into iOS applications. + Collaborate with cross-functional teams, including UI/UX designers, product managers, and backend developers, to define, design, and ship new features. + Optimize iOS applications for maximum speed, performance, and scalability. + Write clean, maintainable, and well-documented code following best practices for iOS development. + Debug and resolve application issues by using diagnostics tools and Firebase Crashlytics. + Monitor and analyze app performance metrics using Firebase Analytics and other tools. + Stay updated on the latest trends, tools, and technologies in iOS development and integrate relevant elements into ongoing projects. + Review and contribute to technical design documentation and participate in code reviews. Requirements Required Qualifications: + Bachelor’s degree in Computer Science, Software Engineering, or related technical field, or equivalent practical experience. + 2+ years of professional iOS development experience using Swift (experience with Objective-C is a plus). + Hands-on expertise with Firebase services, including but not limited to Authentication, Realtime Database, Firestore, Cloud Storage, Cloud Messaging (FCM), Crashlytics, and Analytics. + Strong understanding of Apple’s development tools (Xcode) and iOS frameworks (e.g., UIKit, Core Data, Core Animation). + Experience implementing RESTful APIs with mobile clients. + Proficient in version control tools such as Git. + Familiarity with agile development methodologies. Preferred Skills: + Knowledge of app deployment processes in the Apple App Store. + Experience integrating third-party SDKs and APIs. + Familiarity with reactive programming using Combine or similar frameworks. + Previous experience with mobile application security practices and Firebase Security Rules. + Understanding of Continuous Integration/Continuous Deployment (CI/CD) practices for mobile development. Soft Skills: + Strong problem-solving and analytical skills. + Good communication skills, both written and verbal, with the ability to explain technical concepts to non-technical stakeholders. + Ability to work both independently and collaboratively in a team-oriented environment. + Strong attention to detail, with a focus on delivering a seamless user experience. Technology Doesn't Change the World, People Do.® Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app (https://www.roberthalf.com/us/en/mobile-app) and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use (https://www.roberthalf.com/us/en/terms) .