Mobile App Developer (iOS, Android & Cross-Platform)

Location: Remote from Portugal; flexible working hours

Company

hirify.global is hiring for a client seeking a mobile engineer to build and maintain production-ready iOS and Android applications.

What you will do

• Develop and maintain native and cross-platform mobile applications for iOS and Android.
• Translate Figma and product designs into responsive, polished interfaces for smartphones and tablets.
• Integrate REST APIs, backend services, authentication systems, and third-party services.
• Improve application performance, memory usage, battery efficiency, stability, and crash-free operation.
• Test features across devices and operating system versions, debug defects, and support regression testing.
• Prepare production builds, support Apple App Store and Google Play releases, and resolve post-release issues.

Requirements

• 3+ years of mobile application development experience.
• Strong experience with iOS and/or Android development, including Swift, Kotlin or Java, iOS SDK, and Android SDK.
• Hands-on experience with React Native and/or Flutter.
• Understanding of REST APIs, mobile networking, authentication, application lifecycle, and MVVM, MVC, or MVP architecture patterns.
• Experience implementing mobile UI/UX designs, using Git, debugging applications, and collaborating with product, design, backend, and QA teams.
• Ability to work independently in a remote environment.

Nice to have

• Experience publishing applications to the Apple App Store and Google Play Store.
• Experience with Firebase, push notifications, mobile analytics, authentication systems, offline-first functionality, real-time features, or mobile animations.
• Startup or product-company experience and experience optimizing applications for growing user bases.

Culture & Benefits

• Fully remote work with flexible working hours.
• Ownership across development, quality, performance, and production release.
• Close collaboration with product, design, backend, QA, and engineering teams.
• Career growth opportunities toward Senior Mobile Engineer, Lead Mobile Developer, Mobile Architect, or Engineering Lead.

Hiring process

• Initial application followed by a required Spark Hire one-way video interview.
• Technical interview and practical mobile coding assessment.
• Final client interview, offer, and onboarding.