Hire the Best WinDev Mobile Specialists

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Hai N.

Hanoi, Vietnam

$12/hr
5.0
7 jobs

I am a Senior Mobile Application Developer with 10+ years of experience building, maintaining, and improving production-ready mobile applications across Android, iOS, Flutter, and React Native. My strongest expertise is Android development with Java and Kotlin , with extensive experience in mobile architecture, performance optimization, API integration, and complex application features. I also have strong hands-on experience with Flutter and cross-platform mobile development, allowing me to work effectively on both native and cross-platform projects. I specialize in helping businesses build new mobile applications, improve existing apps, fix complex issues, and integrate third-party services and APIs. What I can help you with ๐Ÿ”น Native Mobile Development * Android โ€” Java, Kotlin, Android SDK * iOS โ€” Swift * Native UI, system components, background processing, notifications * Performance optimization and memory management ๐Ÿ”น Cross-Platform Development * Flutter / Dart * React Native * Cross-platform architecture and reusable components * State management and scalable application structure ๐Ÿ”น Mobile App Development & Maintenance * New feature development * Existing app improvements * Bug fixing and troubleshooting * Performance optimization * UI/UX implementation from Figma designs * App modernization and codebase refactoring * Android/iOS build and release support ๐Ÿ”น Architecture & Code Quality * Clean Architecture * MVVM / MVP * SOLID principles * Kotlin Coroutines & Flow / StateFlow * Dependency Injection with Hilt * Room / SQLite * Firebase * REST APIs and JSON ๐Ÿ”น API & Third-Party Integrations * RESTful APIs * Firebase Authentication / Firestore * Push Notifications * RevenueCat / In-App Purchases * Payment and subscription systems * Social login * Analytics and crash reporting * Third-party SDK integration * AI API integration * Enterprise backend integration I have experience working on mobile applications throughout the full development lifecycle โ€” from architecture and implementation to debugging, optimization, testing, and production release. After several years as a hands-on developer, I became a Team Leader, where I was responsible for technical architecture, development standards, code reviews, technical decisions, and mentoring developers. Whether you need someone to build a mobile app from scratch or take over and improve an existing codebase, I can help analyze the current implementation, identify technical issues, and deliver a maintainable solution. Core Technologies: Android | Kotlin | Java | Android SDK | iOS | Swift | Flutter | Dart | React Native | Firebase | REST API | SQLite | Room | Clean Architecture | MVVM | MVP | Git

  • Flutter
  • Android
  • Java
  • Kotlin
  • Mobile App Development
  • Dart
  • Mobile App Bug Fix
  • Bug Fix
  • App Feature Development
  • App Development
  • In-App Subscription
  • Android App Development
  • AI App Development
  • SnapKit
  • SAP Fiori
  • ABAP
  • SAP SD
  • SAPUI5
  • AI Mobile App Development
  • Web & Mobile Design Consultation
Muhammad A.

Lahore, Pakistan

$25/hr
5.0
58 jobs

I build ๐—ฟ๐—ฒ๐—น๐—ถ๐—ฎ๐—ฏ๐—น๐—ฒ, ๐—ฝ๐—ฟ๐—ผ๐—ฑ๐˜‚๐—ฐ๐˜๐—ถ๐—ผ๐—ปโ€‘๐—ฟ๐—ฒ๐—ฎ๐—ฑ๐˜† ๐—บ๐—ผ๐—ฏ๐—ถ๐—น๐—ฒ ๐—ฎ๐—ฝ๐—ฝ๐˜€ for iOS and Android. With 8+ years of experience and over 100 shipped apps, I focus on ๐—ฐ๐—น๐—ฒ๐—ฎ๐—ป ๐—ฒ๐—ป๐—ด๐—ถ๐—ป๐—ฒ๐—ฒ๐—ฟ๐—ถ๐—ป๐—ด, ๐—ฒ๐—ณ๐—ณ๐—ถ๐—ฐ๐—ถ๐—ฒ๐—ป๐˜ ๐—ฑ๐—ฒ๐—น๐—ถ๐˜ƒ๐—ฒ๐—ฟ๐˜†, and ๐—ฝ๐—ฟ๐—ฒ๐—ฑ๐—ถ๐—ฐ๐˜๐—ฎ๐—ฏ๐—น๐—ฒ ๐—ฟ๐—ฒ๐˜€๐˜‚๐—น๐˜๐˜€. I handle the full development cycle: ๐—ฎ๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ โ†’ ๐—ฐ๐—ผ๐—ฑ๐—ถ๐—ป๐—ด โ†’ ๐˜๐—ฒ๐˜€๐˜๐—ถ๐—ป๐—ด โ†’ ๐—ฑ๐—ฒ๐—ฝ๐—น๐—ผ๐˜†๐—บ๐—ฒ๐—ป๐˜ โ†’ ๐—บ๐—ฎ๐—ถ๐—ป๐˜๐—ฒ๐—ป๐—ฎ๐—ป๐—ฐ๐—ฒ. No guesswork, no fluff โ€” just solid execution. ๐—ถ๐—ข๐—ฆ: Swift, SwiftUI, Objectiveโ€‘C ๐—”๐—ป๐—ฑ๐—ฟ๐—ผ๐—ถ๐—ฑ: Kotlin, Java, Jetpack ๐—–๐—ผ๐—ฟ๐—ฒ ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ: โ€ข Firebase & realโ€‘time data sync โ€ข Offlineโ€‘first architectures โ€ข REST APIs & complex integrations โ€ข Payment systems & inโ€‘app purchases โ€ข Mapping, GPS & locationโ€‘based features โ€ข Bluetooth & deviceโ€‘level integrations โ€ข Mediaโ€‘heavy apps, rendering, editing, streaming โ€ข Custom UI components & performanceโ€‘optimized UI โ€ข App Store & Play Store deployment ๐—ฆ๐—ฒ๐—น๐—ฒ๐—ฐ๐˜๐—ฒ๐—ฑ ๐—ช๐—ผ๐—ฟ๐—ธ: โ€ข Multiple apps with more than 1M downloads each โ€ข Highโ€‘performance wallpaper & media apps โ€ข Fintech apps with secure transaction flows โ€ข Realโ€‘time chat and streaming applications โ€ข Utility and productivity apps with advanced device integration My approach is direct: understand the problem, define the right solution, and deliver without wasting time. If something isnโ€™t feasible, I say it. If thereโ€™s a better technical strategy โ€” I push for it. If you need someone who ๐—น๐—ผ๐˜ƒ๐—ฒ๐˜€ clean code, takes ๐—ผ๐˜„๐—ป๐—ฒ๐—ฟ๐˜€๐—ต๐—ถ๐—ฝ, and delivers consistently โ€” invite me to your job.

  • iOS
  • Android
  • Objective-C
  • Kotlin
  • Android Studio
  • Swift
  • iOS SDK
  • Apple Xcode
  • Android SDK
  • watchOS
  • Flutter
  • React Native
  • SwiftUI
  • Widget
  • JetPack
Harshil J.

Surat, India

$25/hr
5.0
51 jobs

Building the next generation of AI-driven mobile and web experiences. For me, development isn't just about writing code itโ€™s about velocity and impact. In todayโ€™s landscape, that means combining deep engineering expertise with the latest in AI to build products that are smarter, faster, and more intuitive than ever before. I am a Full Stack Engineer specializing in React Native and AI-Native development. I don't just integrate APIs; I build "Agentic" systems that leverage LLMs for complex reasoning, multi-modal search, and personalized user experiences. By utilizing advanced AI tools (Cursor, Claude, and custom MCP servers), I deliver production-ready code significantly faster than traditional workflows. Core Technical Arsenal: - Mobile: Expert-level React Native (iOS/Android), Native modules (Swift/Kotlin), and Expo SDK 50+. - AI & Intelligence: Deep experience with OpenAI, Claude (Anthropic), and LangChain. Specialist in RAG (Retrieval-Augmented Generation), vector databases (pgvector/Pinecone), and local LLM optimization. - Full Stack & Cloud: Node.js, Next.js, and Python backends. Expert in AWS/Azure/GCP and automated CI/CD pipelines. Legacy Strength: Years of experience in Swift, Objective-C, Kotlin, and Java for high-performance native bridges. Since 2018, Iโ€™ve taken projects from a blank page to thousands of active users. I take full ownership of the product lifecycle from architecting scalable backends to polishing the "premium" feel of the UI. What I bring to your project: - AI Strategy: Iโ€™ll help you figure out where AI adds real value and where itโ€™s just noise. - Scalable Engineering: Code that doesnโ€™t just work today, but scales to a million users tomorrow. - Transparency: No jargon. Just clear updates, honest timelines, and a focus on your ROI. Outside of work, I love to travel, explore new places.

  • React Native
  • Flutter
  • React
  • TypeScript
  • JavaScript
  • Native App Development
  • iOS Development
  • Android App Development
  • Mobile App Development
  • Swift
  • Android
  • iOS
  • Native App
  • Firebase
  • Mobile App
Sidena A.

Khemis Miliana, Algeria

$25/hr
5.0
27 jobs

๐ŸŒŸ Top-Rated Plus by Upwork ๐ŸŒŸ I'm a Senior Developer with a wealth of experience in Android & iOS development, both frontend and backend. I do native development (Swift, Kotlin) and frameworks such as React Native and Flutter. Skillset includes: โœ”๏ธ Native Android Development (Java, Kotlin, C++) & iOS (Swift, Objective-C) โœ”๏ธ Kotlin multiplatform (Android, iOS, Web, Desktop) โœ”๏ธ Compose multiplatform โœ”๏ธ Flutter (Dart) โœ”๏ธ React Native โœ”๏ธ Ionic/Xamarin - Capacitor - Svelte โœ”๏ธ Backend Development (Spring Boot, Django, PHP + SQL/noSQL) โœ”๏ธ PC App Development (Node.js, Ruby on Rails, Qt Python, Kotlin Multiplatform) โœ”๏ธ Web App Development (JS/Wasm, Svelte, WordPress, Kotlin Multiplatform) ๐ŸŽฏ I am triliingual, I speak Arabic (natively), English, and French ๐ŸŽฏ I leverage AI agentic coding to bring the products I make for you to perfection and cut development time in half

  • Java
  • C++
  • Swift
  • Kotlin
  • iOS
  • Graphic Design
  • Android
  • Native App Development
  • Hybrid App Development
  • Flutter
  • Full-Stack Development
  • Dart
  • Node.js
  • Claude
  • ChatGPT
  • OpenAI Codex
Mohamed B.

Casablanca, Morocco

$20/hr
4.9
38 jobs

I design, build and maintain production-grade tracking and fleet apps used daily in the USA, Canada and Morocco, from school buses (SafeRoutz) to courier fleets (Courrier Diakitรฉ) and vehicle tracking (OMA FLEET). I can help you with: โœ“ New Flutter apps (iOS, Android, Web) for GPS tracking, logistics, delivery, or mobility โœ“ Fixing / refactoring existing apps that crash, lag, or drain battery โœ“ Integrations with Teltonika, Traccar, Mapbox, Google Maps, custom GPS APIs โœ“ Background location tracking, routing, turn-by-turn navigation, driver workflows โœ“ Full back-end setup with Laravel, Supabase, Firebase, PostgreSQL Selected results: โœ“ 7+ years of experience, 20+ published apps on Google Play & App Store โœ“ School-bus tracking apps running in production in the US โœ“ Logistics & courier app used by teams in Quebec, Canada โœ“ Insurance, city services and community apps with 20K+ installs โœ“ Clean, modular codebase (BLoC + Clean Architecture + tests) thatโ€™s easy to maintain Tech stack: โ€ข Flutter (Dart) โ€“ iOS, Android, Web โ€ข Laravel (PHP), REST APIs, Supabase, Firebase โ€ข PostgreSQL, MySQL โ€ข Maps/GIS: Mapbox, Google Maps, Valhalla, Traccar integrations โ€ข Docker, Nginx, CI/CD How I work: We clarify your problem and success metrics (MVP or specific bug/feature). I propose a clear plan with milestones and deliverables. You get frequent builds, straight communication, and detailed change logs. After launch, Iโ€™m available for monitoring, improvements and long-term support. If youโ€™re building (or rescuing) a GPS, fleet, or logistics app and you want something that actually works in the real world, send me a short message about your project and Iโ€™ll reply with concrete options for next steps.

  • Native App Development
  • Hybrid App Development
  • Dart
  • Android App Development
  • iOS Development
  • Firebase Realtime Database
  • Android
  • Mobile App Development
  • Firebase
  • Flutter
  • Push Notifications
  • Android SDK
  • Apple Xcode
  • Hybrid App
  • Animation
Naeem U.

Lahore, Pakistan

$16/hr
5.0
16 jobs

Flutter Developer with 8 years of building production iOS & Android apps, specializing in apps that connect to hardware or sync data in real time: Bluetooth/BLE device pairing, IoT integration, live location tracking, and offline-first sync. Started as a native Android developer, moved into Flutter early, so I bring native platform depth (Kotlin, Swift, Java) plus Flutter's cross-platform speed to every build. RECENT WORK: 1-Supervised-release monitoring app: BLE device pairing, live GPS tracking, automated check-ins, cloud backend 2-Property management platform: real-time listings, cloud database, multi-user sync 3-E-commerce and parking/IoT apps: payment integration, hardware-to-app communication WHAT I HANDLE END-TO-END: โœ… MVP development: Figma/design files to published App Store & Play Store app โœ… Bluetooth & IoT integration: device pairing, real-time hardware sync โœ… Firebase / cloud backend: Auth, Firestore, push notifications, analytics โœ… REST API & WebSocket integration โœ… Payment gateways & in-app purchases โœ… Offline-first apps: local storage (Hive, SQLite) with cloud sync โœ… State management: BLoC, Riverpod, Provider, GetX โœ… Performance fixes, refactoring, and legacy codebase cleanup โœ… App Store / Play Store release management TECH STACK: Flutter, Dart, Kotlin, Swift, Java, Firebase, REST APIs, WebSockets, Bluetooth/BLE, GPS/location services, SQLite, Hive, BLoC, Riverpod, Provider, GetX, CI/CD (GitLab, TestFlight, Play Console) Top Rated Plus on Upwork. Former "Best Android Developer of the Year" (previous company). I've also led dev teams, not just written solo code, so I can scope realistically and communicate clearly on timelines. If your project involves connecting an app to a device, a real-time backend, or both, send me an invite and I'll take a look.

  • Smartphone
  • Mobile App Development
  • Flutter
  • Bluetooth LE
  • Arduino IDE
  • Firebase
  • Mobile App Design
  • Mobile App Bug Fix
  • Android App
  • iOS Development
  • Google Maps
  • User Profile Creation
  • SaaS Development
  • Bluetooth
  • API Integration
  • Internet of Things

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Don't just take our word for it

What does a WinDev mobile specialist do?

A WinDev mobile specialist builds cross-platform native applications for Android, iOS, and Windows IoT using the PC SOFT WINDEV Mobile integrated development environment. This developer writes business logic and user interface code in WLanguage, a proprietary programming language specific to the PC SOFT ecosystem. The role focuses on creating single-codebase solutions that compile to native executables for multiple mobile operating systems without requiring separate projects for each platform. These specialists manage the entire application lifecycle from initial screen design to final deployment package generation.

  • Authors WLanguage code to implement user interface screens, handle touch events, and execute core business logic within the WINDEV Mobile IDE. The developer defines data models and connects application forms to embedded or remote HFSQL databases to store and retrieve user information. This work includes configuring database access through native connectors or standard protocols like ODBC to ensure reliable data synchronization between the mobile device and backend servers.
  • Integrates native mobile device features such as GPS location services, barcode scanners, and camera inputs directly into the application workflow. The specialist configures hardware permissions and writes specific WLanguage functions to capture sensor data or process external inputs from Internet of Things devices. This integration allows the app to interact with physical world elements while maintaining performance standards required for smooth mobile operation.
  • Generates compiled executable builds for target platforms and prepares deployment artifacts for distribution through app stores or enterprise channels. The developer tests the application on actual devices or emulators to validate functionality across different screen sizes and operating system versions. This process includes troubleshooting compilation errors, optimizing memory usage, and ensuring the final package meets the technical requirements for installation on Android or iOS devices.

How to hire a WinDev mobile specialist on Upwork

Step 1: Post a job

Define your cross-platform app requirements clearly to attract qualified developers. Use the Job Post Generator powered by Umaโ„ข, Upwork's Mindful AI to draft your listing. Describe your needs in a few sentences and Uma drafts a job post for the role. You can write a new post, update a saved draft, or reuse an existing post.

  • Specify that the developer must build applications using the WINDEV Mobile IDE and WLanguage programming language for Android or iOS targets.
  • List required database integrations, such as HFSQL embedded storage or remote connections via ODBC connectors, to handle app data correctly.
  • Request experience with configuring device-specific features like GPS tracking, barcode scanning, or Windows IoT compatibility within the mobile environment.

Step 2: Evaluate candidates

Review portfolios for compiled executables and source code from previous WINDEV Mobile projects. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess technical fit quickly.

  • Look for demonstrated ability to generate deployment-ready builds for multiple platforms from a single codebase using PC SOFT tools.
  • Check for examples of complex UI logic written in WLanguage that respond smoothly to user inputs on smartphones and tablets.
  • Verify past work involving secure data synchronization between mobile devices and central servers or local HFSQL databases.

Step 3: Interview your top choices

Discuss specific technical challenges related to mobile deployment and database connectivity. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.

  • Ask how they troubleshoot performance issues when accessing large datasets through remote database connectors on mobile networks.
  • Request details on their process for testing app functionality across different screen sizes and operating system versions before release.
  • Inquire about their approach to managing version control and merging code changes when multiple developers work on the same WINDEV project.

Step 4: Agree on scope and begin work

Set clear milestones for coding, testing, and final build generation. 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 deliverables such as the complete WINDEV Mobile project source code and compiled executable files for each target platform.
  • Establish acceptance criteria for database integration tests to confirm data reads and writes function correctly on physical devices.
  • Schedule regular check-ins to review progress on UI implementation and business logic coding before moving to the testing phase.

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 a WinDev mobile specialist cost?

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

Project setup and configuration

$500-$1,000/project

Entry-level to mid-level
  • Initialized WinDev Mobile project with defined screens
  • Configured HFSQL database schema for app data
  • Prepared deployment configuration for target devices

UI development and logic

$1,000-$2,500/project

Mid-level
  • Built responsive screens using WLanguage components
  • Coded application workflows and event handlers
  • Implemented access to GPS or barcode features

Database integration

$2,500-$4,500/project

Mid-level to senior-level
  • Established remote database connections via ODBC
  • Wrote scripts for local and server data synchronization
  • Tested data integrity across embedded and remote stores

Cross-platform deployment

$4,500-$7,000/project

Senior-level
  • Generated installable packages for Android and iOS
  • Validated app functionality on multiple device types
  • Compiled final release files for distribution

Full application development

$7,000-$12,000/project

Expert-level
  • Authored full WLanguage codebase for complex app
  • Integrated IoT sensors and custom hardware interfaces
  • Submitted tested executables and project documentation

Frequently asked questions

Is hiring a WinDev mobile specialist worth it?

For most businesses, yes: hiring a WinDev mobile specialist is worthwhile. This approach lets you build one codebase in WLanguage and deploy it to Android, iOS, and Windows IoT devices without maintaining separate native projects. You save time on cross-platform compatibility while retaining access to device features like GPS and barcode scanners.

How do I evaluate WinDev mobile specialist candidates?

Review their experience with the WINDEV Mobile IDE and ask for examples of apps they built using WLanguage. Look for candidates who demonstrate how they configured HFSQL database connections and managed deployment builds for multiple target platforms.

What platforms does a WinDev mobile specialist support?

A WinDev mobile specialist builds applications that run on Android, iOS, and Windows IoT devices from a single project source. They compile the code once and generate the specific executables required for each operating system environment.

Does a WinDev mobile specialist handle database integration?

Yes, these specialists configure access to embedded or remote databases such as HFSQL using supported connectors within the application logic. They write the WLanguage code needed to query data and synchronize information between the mobile app and your backend systems.