Hire the Best Android Developer Consultants

Clients rate our Android Developer Consultants
Rating is 4.8 out of 5.
4.8/5
Based on 20,497 client reviews

Hamza M.

Expert Flutter Developer | Android | iOS | Laravel

Faisalabad, Pakistan
$8 per hour
36 jobs
$10K+ total earnings

I’m a professional Mobile & Full-Stack Developer with 7+ years of experience in mobile app development and 10+ years of experience in PHP/Laravel web development. I build production-ready mobile apps, web applications, REST APIs, backend systems, POS solutions, marketplaces, eCommerce platforms, and SaaS applications from development to deployment. My core technologies include Flutter, Dart, Android, Java, Kotlin, iOS, Swift, PHP, Laravel, MySQL, SQLite, Firebase, REST APIs, and AWS. I have successfully completed 50+ full-fledged projects across multiple industries and can work on both new applications and existing codebases. 📱 Mobile App Development I develop high-quality Android and iOS applications using: ✅ Flutter & Dart ✅ Native Android with Java & Kotlin ✅ Native iOS with Swift ✅ REST API integration & backend connectivity ✅ Firebase & FCM Push Notifications ✅ Google Maps & location-based features ✅ Authentication & social login ✅ Real-time chat & messaging ✅ In-App Purchases & subscriptions ✅ AdMob & ad mediation ✅ Payment gateway integration ✅ Offline databases & synchronization ✅ Localization / multi-language apps ✅ Performance optimization ✅ Bug & crash fixing ✅ Google Play & Apple App Store deployment 🌐 Laravel & Full-Stack Development I also provide complete PHP/Laravel web and backend development , including: ✅ Laravel web applications ✅ RESTful APIs & backend systems ✅ Admin dashboards ✅ MySQL database design & optimization ✅ Authentication & authorization ✅ eCommerce platforms ✅ Multi-vendor marketplaces ✅ POS & inventory management systems ✅ SaaS applications ✅ Payment integrations ✅ Third-party API integrations ✅ AWS deployment & server management 💼 Project Experience I have experience developing applications and platforms such as: 📦 POS & Inventory Systems — products, purchases, sales, suppliers, customers, stock, invoices, reports, payments and dashboards. 🏠 Real Estate Apps — property listings, advanced search, filters, maps, agents/agencies, media uploads and user management. 🛒 eCommerce & Marketplace Apps — products, cart, checkout, payments, orders, seller accounts, multi-vendor systems and delivery tracking. 🍔 Food & Restaurant Apps — restaurants, menus, food ordering, delivery, payments, order management and restaurant dashboards. 🏥 Health & Telemedicine Apps — doctors, patients, appointments, health records, consultations and notifications. 🏋️ Fitness Apps — workouts, exercises, progress tracking, subscriptions, profiles and notifications. 📚 Quiz & Learning Apps — quizzes, questions, categories, scoring, leaderboards, courses and progress tracking. 💬 Social & Social Media Apps — profiles, posts, comments, likes, follows, chat, media sharing, notifications, reporting and blocking. 🤝 Service Provider Apps — services, bookings, customers, providers, payments, reviews, notifications and admin panels. 📈 Trading & Finance Apps — dashboards, market data integrations, portfolios, transactions, charts and notifications. 🛠️ Technical Skills Mobile: Flutter, Dart, Android, Java, Kotlin, iOS, Swift Backend & Web: PHP, Laravel, REST APIs, MySQL, SQLite, HTML, JavaScript, jQuery, Bootstrap Cloud & Services: Firebase, AWS, FCM, Google Maps, Cloud Storage, Authentication, Third-Party APIs Monetization: In-App Purchases, Subscriptions, AdMob, Ad Mediation Additional: Bug Fixing, Crash Fixing, Performance Optimization, Localization, API Development, Database Design, QA & Testing, App Maintenance, Play Store & App Store Deployment 🔧 Existing App / Bug Fixing Already have an application? I can take over your existing project, understand the codebase and continue development. I can help with: ✔ Bug & crash fixing ✔ New feature development ✔ UI/UX improvements ✔ API & Firebase integration ✔ Android/iOS build issues ✔ Performance optimization ✔ Dependency upgrades ✔ Payment integration ✔ Push notifications ✔ App Store / Play Store issues ✔ Ongoing maintenance & scaling 🚀 Why Work With Me? I can handle the **complete development lifecycle — from Figma/UI → Flutter/Android/iOS → Laravel APIs → Database → Firebase/AWS → Testing → Store Deployment. Whether you need a Flutter Developer, Android Developer, iOS Developer, Laravel/PHP Developer, Backend/API Developer, or Full-Stack Developer, I can provide an end-to-end solution. 📩 Have a project in mind? Send me your requirements, Figma design, existing application, API documentation, or project details. I’ll help you turn your idea into a reliable, production-ready application.

Andrey C.

Mobile App Development | Mobile App Developer | Flutter App Developer

Los Angeles, California
$35 per hour
97 jobs
$1M+ total earnings

👋 25+ years in software development, 17+ years in mobile app development , and 700+ mobile apps delivered. I build and scale iOS, Android, Flutter & React Native products end to end. I’m a veteran full stack developer, mobile app developer, mobile application developer, mobile developer, app developer, and team lead working with a senior long-term team. I take products from idea → launch → scale → maintenance across mobile app development, native app development, cross-platform app development, full-stack development, backend development, API integration, and long-term product growth. With 25+ years in software development and 17+ years in mobile development, I’ve delivered 700+ mobile apps and mobile applications across startups, SaaS platforms, enterprises, and high-growth products. I work as a mobile app developer with expertise in ios and android, Flutter mobile app development, React Native, ios mobile app development, Android app development, native iOS, native Android, and backend-driven systems. 🏆 Why Clients Choose Me ✔️ 25+ years as a full stack developer and software architect ✔️ 17+ years in mobile app development ✔️ 700+ mobile apps delivered across iOS and Android, Flutter & React Native ✔️ 5M+ users across products we’ve built and scaled ✔️ Crash rates reduced by up to 70% and app performance improved by 50% ✔️ Full-cycle delivery: architecture → UI/UX design → development → deployment → scaling → support ✔️ Strong experience with performance optimization, modernization, Mobile App Improvement, and Mobile App Bug Fix ✔️ Long-term work with startups, SaaS companies, enterprises, and Fortune 500 clients 📱 Mobile App Development As an iOS Developer, Android Developer, Flutter Developer, React Native Developer, and AI Mobile App Developer, I build secure, scalable native and cross-platform apps for real-world production use. • Native iOS Development: Swift, SwiftUI, UIKit, Objective-C, Native Swift • Native Android App Development: Kotlin, Java, Jetpack Compose • Flutter Mobile App Development and React Native development • Cross-Platform App Development and Hybrid App Development • Mobile App Design, UI/UX Design, accessibility, localization • App Store and Google Play deployment • Clean Architecture, MVVM, VIPER, modular app structures • Push notifications, in-app purchases, subscriptions, payment gateways • Google Maps, GPS, geolocation, biometrics, BLE, camera, sensors • Mobile app development FlutterFlow for rapid MVPs when low-code is the right fit 🤖 AI Mobile App Development I build AI Mobile App products and AI App Development workflows using OpenAI, Claude, LLMs, AI Agents, AI Automation, and AI integrations. • AI Mobile App Development and AI Solutions • AI App, AI App Developer, and AI-powered Mobile Application development • OpenAI API, OpenAI Claude workflows, and AI integrations • AI Agents, AI assistants, chatbots, Workflow Automation • Backend systems for AI features, user data, and scalable SaaS platforms 🔧 Backend, API Integration & Full Stack I also work as a full stack developer with expertise in python django and react, alongside Node.js, PHP, Firebase, REST APIs, GraphQL, and scalable backend architecture. • REST APIs, API integrations, GraphQL API Integration • Firebase, Node.js, Python, Django, PHP • Authentication, caching, offline sync, token management • SQLite, Room, Realm, Core Data • Real-time chat and live data platforms • AWS and scalable cloud infrastructure ⚙️ DevOps & Delivery • Fastlane, GitHub Actions, Bitrise, Firebase App Distribution • Automated testing, CI/CD, beta testing, crash analytics • App Store & Google Play release pipelines • Performance optimization and staged rollouts 📊 Analytics & Monetization • Firebase Analytics, Mixpanel, Amplitude, Google Analytics • In-app purchases, subscriptions, Stripe, AdMob • Retention, funnels, monetization, product iteration 🌍 Industries Fintech & Banking • Healthcare & Fitness • E-commerce & Retail • SaaS • Education • Social Networking • Travel • Entertainment • IoT • Enterprise Platforms Core expertise: Mobile App • Mobile Application • Mobile Applications • Mobile App Developer • Mobile Application Developer • Mobile Developer • App Developer • iOS App • iOS Development • Android App Development • Native App • Native App Development • Cross-Platform App Development • Flutter Developer • React Native Developer • Full Stack • Full Stack Developer • AI Mobile App Developer • AI App Development • Backend Development • API Integration • Mobile App Development • Mobile App Developer • iOS App Development • Android App Development • Flutter App Development • React Native App Development • Custom Mobile App Development • MVP Development • Mobile App Design • API Integration ✅ Need a Mobile App Developer who can own the product beyond a single sprint? Let’s build a mobile product that scales.

Ranjeet Singh S.

Senior Mobile App Developer | React Native, Flutter, iOS, Android & AI

Chandigarh, India
$20 per hour
218 jobs
$400K+ total earnings

I’m a Senior Mobile App Developer with 14+ years of software development experience and a strong track record of building and maintaining production-ready mobile applications for startups, businesses, and established product teams. My core expertise is React Native, Flutter, iOS and Android development, with experience taking mobile products from a new idea or Figma design through development, API integration, testing and App Store / Google Play release. With 186+ completed Upwork jobs and 14K+ hours worked, I’ve worked across different types of mobile products and business requirements — from new MVPs and customer-facing applications to existing apps that need new features, performance improvements, integrations or ongoing development. MOBILE APP DEVELOPMENT • React Native app development for iOS and Android • Flutter app development using Dart • Native iOS development with Swift and SwiftUI • Native Android development with Kotlin • Cross-platform mobile application development • MVP and startup app development • Existing app development and feature enhancement • Mobile app redesign and UI implementation • Bug fixing, maintenance and performance optimization • App Store and Google Play deployment WHAT I CAN BUILD I have experience developing mobile applications involving: • Social networking and community apps • E-commerce and marketplace applications • On-demand and delivery applications • Taxi, transportation and location-based apps • Healthcare and fitness applications • Business and productivity apps • SaaS and subscription-based mobile products • Real-time chat and communication • GPS, maps and location tracking • Booking and appointment applications • Media, camera and file-based applications API, BACKEND & THIRD-PARTY INTEGRATION Mobile applications often require more than just the frontend. I regularly work with backend APIs and third-party services to connect mobile apps with the systems they depend on. This includes: • REST API integration • Firebase • Authentication and user management • Push notifications • Google Maps and location services • Payment gateways and in-app purchases • Social login and third-party SDKs • Real-time communication • Cloud-based services • Analytics and crash reporting AI-POWERED MOBILE APPS I also build and integrate AI-powered functionality into mobile applications where it provides a genuine product benefit. This includes: • OpenAI / ChatGPT integrations • AI chatbots and virtual assistants • AI content generation • AI-powered search and recommendations • Voice and conversational interfaces • Image and document-based AI features • LLM API integrations • AI automation inside existing mobile applications FOR EXISTING APPLICATIONS If you already have an application and need an experienced developer to take over or extend it, I can help with: • React Native or Flutter codebase review • Existing app feature development • UI/UX implementation from Figma • API and third-party integrations • Performance optimization • Crash and bug resolution • React Native / Flutter upgrades • iOS and Android compatibility issues • App Store / Google Play release support • Long-term maintenance and development WHY CLIENTS WORK WITH ME I bring extensive hands-on mobile development experience rather than only focusing on writing new code. I can understand an existing codebase, work with APIs and backend teams, troubleshoot production issues, and develop new functionality without losing sight of the overall product. If you need a React Native developer, Flutter developer, iOS developer, Android developer, or experienced mobile app developer for a new product or an existing application, send me the details of your project and I’ll help you work out the right technical approach.

Dmitriy C.

Android Developer Kotlin Mobile Developer | On-device AI / LLM Mobile

Dnipro, Ukraine
$40 per hour
36 jobs
$100K+ total earnings

Kotlin Android Developer (10yrs) & Mobile Developer helping founders and product teams: 🔸️build high-performance apps from 0 to launch with Kotlin & Jetpack Compose 🔸️upgrade outdated apps 🔸️fix "vibe-coded" app performance 🔸️integrate on-device AI / LLMs to save cloud costs 🔸️set up GitHub Actions (CI) for testing and deployment 🔸️and stay compliant with Google Play policies. ✅️ 100k+ MAU app dev experience ✅️ 4.5+ average rating across launched Google Play apps ✅️ 99.9% crash & ANR free users across all launched apps ✅️ Hands-on experience with AI-powered apps, local SLM / LLM, MediaPipe, LiteRT / TFLite ✅️ Hands-on experience with Kotlin Multiplatform ( KMP , CMP ) ✅️ 5-star feedback from past clients ✅️ 100% JSS ✅️ 30+projects delivered In 2026 I specialize in: - on-device AI integration using MediaPipe / LiteRT / Google ML Kit / TensorFlow ( Object detection , Face detection , Pose detection , Text summarizing, OCR , TTS, STT ); - video / media editing apps ( FFMpeg , AndroidX Media3 , MediaCodec ); - build, improve and maintain media , social , edtech, utility, productivity tools); - performance optimization , bug fixing , firebase crash resolution and ANRs 🌟🌟🌟🌟🌟 Recent feedback : "I was particularly impressed by his strong attention to detail - nothing was overlooked, and the quality of the work consistently met high standards. He showed real commitment to the project, staying engaged and proactive throughout the development process. His regularity and consistency in delivering work made collaboration smooth and reliable." - Neil 🚀 Also I've been building my own Android apps so that gives me a deep understanding of not only a technical part but also ASO and monetization strategy. ✅️ My recent large-scale projects: --- PDF Maker & Reader (130k+ installs , 🌟4.6 on Google Play) Role: Android Developer / Android App Developer / Kotlin Developer I recently built this high-performance Android app from scratch based on Figma mockup using Kotlin. It allows users to quickly convert images to PDF and edit existing PDFs using a fast, local-first architecture. The app has achieved 130k+ downloads and 8k monthly active users on Google Play, with the crash rate lower than 0.1%. --- --- US Medical Education App (COMQUEST for COMLEX & COMAT Prep) Role: Android Developer / Android App Developer / Mobile Developer As part of an international team alongside iOS Developer and Web Developer, I built this Android app from scratch based on Figma designs for US medical students. Continue providing ongoing support for this project, ensuring the mobile app remains a stable and reliable tool for users. --- --- US Automotive Video Suite app Role: Android Developer / Android App Developer / Mobile Developer In collaborating with an iOS Developer and a Full Stack Developer, I built two native Android apps from scratch as a clone of iOS apps (Dealer Video Inventory and Dealer Video Suite) that allows dealers to capture high-quality vehicle inventory videos and photos. These projects helps dealers increase sales through personalized video. --- 🌟 🌟🌟🌟🌟 "Dmitri is a pleasure to work with. He's Android programming skills are exceptional. He's always professional and easy to work with. He is very methodical in his approach. Which at times has resulted in delivery scheduling slipping a little but I rather have a good product than a hastily put together product. We're continuing to work with Dima for other projects." - Philip As a team player for cross-platform projects I have a proven track record of working alongside iOS developers to ensure smooth releases. I also have specific experience collaborating with Flutter Developers and Full Stack Developers to bridge the gap between cross-platform Flutter / React Native code and the system features specifically by developing custom Java / Kotlin modules to handle native Android OS functionality that standard Flutter plugins can't reach. --- 🚀 My core stack: 🔸️Languages: Java , Kotlin 🔸️UI: XML , Jetpack Compose 🔸️Architecture: MVVM , MVI , Clean Architecture 🔸️Native: Android SDK , Android Studio 🔸️Multiplatform: Kotlin Multiplatform ( KMM / KMP ) / Compose Multiplatform ( CMP ) 🔸️Key features: Camera , Photo & Video capture and edit using FFMpeg , OpenGL , OpenCV ; GPS , Location , Chat , Background syncronization , WorkManager and foreground services, ofline-first approach, on-device AI / LLM , VPN / WireGuard , ExoPlayer / Media3 🔸️On-device AI integration : Video analysis , Image recognition , Object detection , Face detection , Pose Detection , Camera stream analysis , Text-to-Speech , Speech-to-Text ( MediaPipe / Google AI Edge , TensorFlow / TFLite , Google ML kit ). 🔸️Cloud AI integration : OpenAI , Gemini API

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Don't just take our word for it

What does an Android developer consultant do?

An Android developer consultant architects and builds mobile applications for the Android operating system. This role establishes scalable app structures and implements core features using standard development tools. The consultant writes code, configures build systems, and validates application behavior to meet performance standards. They translate business requirements into functional software components that run reliably on diverse devices.

  • The consultant designs application architecture using Jetpack libraries to manage user interface state and data flow. They structure code with ViewModel components to separate UI logic from business data so the app remains responsive during configuration changes. This approach prevents memory leaks and simplifies maintenance by keeping distinct layers of the application independent. The developer integrates these patterns directly into the project source code to create a stable foundation for future feature additions.
  • They configure local data persistence by building database schemas with Room to store information offline. The consultant defines data access objects and entities that map Java or Kotlin classes to SQLite tables without writing raw SQL queries. This setup allows the application to cache user data and retrieve it when network connectivity is unavailable. They also implement background processing tasks using WorkManager to handle deferrable operations like syncing data or uploading logs.
  • The consultant manages the build process by writing and optimizing Gradle scripts within Android Studio. They define dependencies and configure build variants for different environments to reduce compilation times. This work confirms that the final application package compiles correctly and includes all necessary resources. They write and execute unit tests and integration tests to verify that individual modules and complete user flows function as intended.

How to hire an Android developer consultant on Upwork

Step 1: Post a job

Define your app architecture needs and technical stack clearly to attract qualified experts. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description in seconds. Describe your requirements in a few sentences, and Uma creates a structured post for you. You can write a new post, update a saved draft, or reuse an existing post.

  • Specify required Jetpack components like ViewModel for state management and Room for local data persistence.
  • List build tools such as Android Studio and Gradle to confirm candidates match your development environment.
  • Detail background task requirements using WorkManager to filter for consultants with relevant implementation experience.

Step 2: Evaluate candidates

Review portfolios for clean code structures and functional Android applications built with modern SDK practices. Uma runs instant video interviews and builds shortlists with side-by-side comparisons to speed up your selection process.

  • Look for GitHub repositories showing implemented architecture patterns and proper separation of UI and data layers.
  • Check for evidence of testing strategies, including local unit tests and integration tests for app behavior.
  • Verify experience with AOSP modifications if your project requires deep system-level customization beyond standard apps.

Step 3: Interview your top choices

Discuss technical approaches to complex UI states and data synchronization challenges specific to your product. Schedule and conduct interviews within Upwork Messages, which generates an immediate transcript and summary after each session.

  • Ask how they handle configuration changes and state retention using ViewModel and Jetpack Compose.
  • Request examples of optimizing Gradle build times and managing dependencies in large multi-module projects.
  • Explore their strategy for debugging memory leaks and performance bottlenecks in long-running background services.

Step 4: Agree on scope and begin work

Set clear milestones for deliverables like database schema design, UI component completion, and test coverage. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.

  • Define acceptance criteria for each feature, such as passing specific unit tests or meeting performance benchmarks.
  • Establish a code review process to maintain quality standards and ensure adherence to architectural guidelines.
  • Agree on a schedule for regular builds and demos to track progress against the agreed-upon project timeline.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring an Android developer consultant cost?

$500-$1,500 per project is a typical range for focused Android developer consultant work. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

Architecture review

$500-$1,200/project

Entry-level to mid-level
  • Analysis of current app structure and Jetpack usage
  • Specific steps to improve ViewModel and state management
  • Prioritized list of architectural improvements

UI implementation

$1,200-$2,500/project

Mid-level
  • Built UI components using Jetpack Compose
  • Integrated ViewModel for screen state handling
  • Configured Android Studio previews for rapid iteration

Data persistence

$2,500-$4,500/project

Mid-level to senior-level
  • Implemented local storage with Room entities and DAOs
  • Structured data access patterns for clean architecture
  • Added schema versioning and data migration logic

Background processing

$4,500-$7,000/project

Senior-level
  • Scheduled deferrable background jobs with WorkManager
  • Defined network and battery constraints for tasks
  • Implemented observers for task completion states

Full app build

$7,000-$12,000/project

Expert-level
  • Optimized build scripts and dependency management
  • Wrote unit and instrumentation tests for core features
  • Compiled signed release artifacts ready for deployment

Frequently asked questions

Is hiring an Android developer consultant worth it?

For most businesses, yes: hiring an Android developer consultant is worthwhile. This approach grants access to specialized expertise in Jetpack Compose and app architecture without the long-term commitment of a full-time employee. Consultants configure build systems and implement persistence layers only when you need them, which keeps project funds aligned with actual development milestones.

How do I evaluate Android developer consultant candidates?

Evaluate candidates by reviewing their specific implementation of Android architecture components like ViewModel and Room. Ask them to explain how they structure data layers and manage background tasks with WorkManager in a recent project. A strong candidate demonstrates clear reasoning for their choice of Gradle build configurations and testing strategies.

What tools does an Android developer consultant use?

An Android developer consultant builds apps using Android Studio and manages dependencies with Gradle. They implement UI and state management with Jetpack libraries such as ViewModel and persist local data using Room.

How does an Android developer consultant handle background tasks?

The consultant schedules deferrable and persistent background work using WorkManager. This library allows tasks to complete reliably even if the app closes or the device restarts unexpectedly.