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I will be your professional kmp mobile developer for Android - iOS - desktop APP

Sonu Kumar
Online|5:19am local time

Basic Mobile App Development

Develop a single mobile app with 2-3 screens with clean, bold and modern look.

Delivery Time
5 Days
Package Includes: see all
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Service details

Looking for a scalable, future-proof cross-platform mobile app?

I build high-performance products with Kotlin Multiplatform (KMP) and Compose Multiplatform (CMP), so Android, iOS, Desktop, and Web can share business logic without giving up native performance or a platform-appropriate user experience.

I have 7+ years of mobile development experience and work with startups and established businesses that want one codebase instead of two or three separate teams. A shared domain and data layer cuts duplicate work, shortens release cycles, and lowers the cost of every new feature, while each platform still feels native. Whether you need a new app from scratch, want to move an existing Android or iOS project onto Kotlin Multiplatform, or need the architecture modernized, I deliver clean, scalable, and maintainable solutions.

Services include full KMP development, Compose Multiplatform UI, shared data and domain layers, and API integration with REST, Ktor, and GraphQL. I also implement offline-first architecture with SQLDelight, Firebase integration, secure authentication, performance optimization, and ongoing feature development after launch. Projects follow Clean Architecture, MVVM or MVI, and modular design so the codebase stays understandable as the product grows. Expect clear module boundaries, testable use cases, and a structure another developer can extend later.

I have built e-commerce, finance, productivity, social, and enterprise apps with modern UI and optimized performance. Typical work covers onboarding, catalogs, payments-ready flows, dashboards, notifications, role-based access, and sync that still works when the network is unreliable. I scope the shared layer first, keep platform-specific code at the edges, and review performance before handover.

This gig covers a small app with basic functionality. Custom quotes are available after we discuss detailed requirements, screens, and platforms. Share your idea, target users, and must-have flows, and I will propose a practical KMP or CMP plan.

Key details

  • App Type
    Native
  • Programming Language
    KotlinSwift
  • Framework
    Jetpack ComposeSwiftuiJetpack Compose Multiplatform
  • Tools
    Android StudioXcodeFirebaseVisual Studio Code
  • Purpose
    Real EstateFinanceHealth & FitnessMaps & NavigationSocial NetworkingChatDeliveryShoppingEcommerceWallet App
  • Expertise
    LocalizationPerformanceSecurityDesignAPI IntegrationFirebase
Special note from freelancer
I focus on delivering clean, scalable, and production-ready solutions using modern best practices. Clear communication, realistic timelines, and long-term maintainability are my top priorities.

FAQs

Kotlin Multiplatform allows sharing business logic across Android, iOS, Desktop, and Web while keeping native performance and user experience. It reduces development cost, improves code maintainability, and ensures faster feature delivery without compromising quality.
Sonu Kumar

Sonu Kumar

Mobile App Developer |Senior Android Developer

Senior Android Developer with 7+ years of experience building scalable, secure, high-performance mobile applications. Proficient in Kotlin, Java, Jetpack Compose, Flutter, Kotlin Multiplatform (KMP), and Swift, delivering native, cross-platform, and iOS solutions. Skilled in MVVM, MVP, MVI, and Clean Architecture for maintainable, testable code. Experienced with banking and enterprise-grade applications where security and performance are non-negotiable.

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