Hire the Best Mobile Freelancers
in the United States

A Top Rated React Native Developer and Software Architect with 9+ years of experience building high-quality mobile and full-stack applications from MVPs and startup products to enterprise-grade systems serving thousands of users. I don't just build apps, I design scalable, maintainable, and future-ready solutions that help businesses grow with confidence. ☑️ What I Specialize In: • Mobile Architecture (React Native / Expo) — clean, scalable, and production-ready applications • Cross-Platform Mobile Development — delivering seamless experiences across iOS and Android • Full-Stack Development — Node.js, PostgreSQL, Supabase, Firebase • Web Applications & Admin Panels — React, Next.js, dashboards, and internal business tools • AI Integrations — OpenAI, Claude, AI-powered features, automation, and intelligent workflows • Third-Party Integrations — Stripe, RevenueCat, Maps, Analytics, CRM systems, and external APIs • Real-Time Applications — chat systems, live updates, notifications, subscriptions, and WebSockets • Performance Optimization & App Stabilization — fixing complex issues, improving performance, and refactoring existing codebases • Technical Leadership — leading development teams, defining architecture, and mentoring developers ☑️ Experience: • 40+ successfully delivered mobile applications across iOS and Android • Built and scaled products in HealthTech, FinTech, Social Networking, Marketplaces, SaaS, and AI-driven platforms • Extensive experience working with startup founders and growing businesses • Strong expertise in legacy codebase refactoring, performance optimization, and long-term maintenance • Delivered complete product lifecycles from architecture and development to deployment and scaling • Experience collaborating with cross-functional teams, stakeholders, and product owners ☑️ Tech Stack: Mobile Development: React Native (Expo & Bare Workflow), TypeScript, React Navigation, Reanimated Backend & Databases: Node.js, PostgreSQL, Supabase, Firebase (Authentication, Firestore, Cloud Functions), REST APIs, GraphQL Web Development: React.js, Next.js, Admin Dashboards, Internal Tools, Vercel Deployments AI & Automation: OpenAI, Claude, AI Assistants, OCR Solutions, Recommendation Systems, Workflow Automation Integrations & Infrastructure: Stripe, RevenueCat, Mapbox, Google Maps, WebSockets, GitHub Actions, Bitrise, CI/CD Pipelines Deployment: App Store Submission, Google Play Store Deployment, Release Management, Production Support ☑️ How I Work I focus on: • Clean and scalable architecture that supports future growth • Fast and efficient development cycles without compromising quality • Product-focused thinking that aligns technical decisions with business goals • Transparent communication and proactive problem-solving • Delivering reliable, maintainable, and production-ready solutions I am comfortable: • Owning the entire product development lifecycle • Building products from the ground up • Joining existing projects and improving code quality • Resolving challenging technical issues independently • Making architectural and technical decisions • Leading teams and coordinating development efforts 🤝 Let's Work Together Whether you need to build an MVP, scale an existing application, integrate complex services, implement AI-powered features, or stabilize an existing codebase, I can help turn your vision into a reliable and successful product. If you're looking for a developer who can build, fix, scale, and think beyond the code, I'd love to discuss your project. Let's build something exceptional together.

Hi there! 👋 I'm Samea Ahmadi, a dedicated App & Product Testing professional with a sharp eye for detail and a strong focus on real user experience. With over 5 years of experience, I help developers, startups, and e-commerce brands ensure their apps and products are user-friendly, bug-free, and ready for the market. I don’t just click around — I analyze how real users will interact with your product. My feedback is always practical, honest, and actionable. ✅ What I Offer: - Mobile App Testing (iOS & Android): Functional, usability, and UI testing - Product Testing (Physical & eCommerce): Testing Amazon and online products as a real customer - Detailed Feedback & Honest Reviews based on real user experience - Bug Identification & Improvement Suggestions - Test Reports with Screenshots or Screen Recordings - Unboxing Experience & First Impressions Testing - Fast Turnaround, Clear Communication, and NDA-friendly service Fast turnaround and clear communication I’ve tested apps for both iOS and Android, and I understand how crucial user feedback is in the development process. Whether you’re launching a new feature or validating your MVP, I’ll help you move forward with confidence. 📩 Ready to make your app or product better? Let’s talk!

Hello! I'm Nahzatullah Safi, a dedicated and flexible freelancer with strong experience in app testing, data entry, and English-to-Persian translation. I pay close attention to detail and always focus on delivering high-quality work that fits your business needs perfectly. Services I Provide: 1. App Testing Thorough testing for Android applications UX/UI review to improve user experience Clear bug reporting with actionable insights Performance evaluation and usability analysis 2. Feedback & Online Reputation Management Honest, professional feedback for online platforms Reviews for Google, Trustpilot, Facebook, and more Reputation improvement for businesses and service providers ✔ Platforms I Work With: Google My Business / Google Maps, Trustpilot, Sitejabber, Yelp, BBB, Tripadvisor, Facebook Page Reviews, HomeAdvisor, Houzz, Yellowpages, Manta, Trustlink, Review.io, Glassdoor, Bark, G2, Capterra, SaaS product reviews, Clutch, B2B product reviews, Avvo, GoodFirms, SourceForge, App Store & Play Store, Website reputation management. With solid experience in building and managing online credibility, I’m here to help businesses strengthen their trust and visibility. Looking forward to collaborating with you! Thank you!

With 5+ years of professional experience in software (website, front-end, back-end, web app) development with a diverse background spanning multiple industries and roles. Throughout my career, I've demonstrated proficiency in full-stack development, system integration, and project management. My diverse experiences have equipped me with a unique skill set to tackle complex challenges and deliver innovative solutions. Technical Proficiencies: Website Technologies: Shpoify, WordPress Frontend Technologies: React, React Native, Flutter, HTML, CSS Backend Technologies: Node.js, Nest.js, TypeScript, JavaScript, Express.js, AWS, MongoDB Database Management: MySQL, PostgreSQL, JSON, Database Schema Design Architectural Patterns: MVC, Event-Driven Architecture, Serverless Architecture, Clean Architecture, GraphQL Mobile Development: iOS SDK, Swift, Objective C, Apple XCode, Android SDK, Kotlin, Java Android Studio Mobile Libraries & APIs: Alamofire, SDWebImage, Cocoapods, SQLite, Core Data Web Services & APIs: RESTful API development, Firebase Cloud Messaging, In-App Purchase Integration Code Optimization: Performance tuning, Design patterns, Material Design, Custom UI Elements, Animation Cloud Services: Firebase Analytics, Database, Storage, Hosting, Crash Reporting, AWS, DigitalOcean Social Integrations: Facebook, Twitter, Google SDK Additional Skills: Web Scraping, Image Processing, Deep Linking, Content Provider, BroadcastReceiver, Background Services Tools: Git, Github, Bitbucket, Sketch, Photoshop ----------------------------------------------------- Full Stack Development Expert, Front-end Developer, Back-end Developer, Web App Development, Mobile App Development, React, React.js, Node.js, Nest.js, Nuxt.js, Express.jsJavascript, Typescript, HTML, CSS, CSS3, PHP, Python, API Development, API Integration, RESTful API, Third-Party SDK Integration, Firebase, Firebase Firestore, Analytics, Crashlytics, Cloud Services, AWS, Amazon Web Services, Database Design, Database Management, Mobile App Development, Native App Development, Android Mobile App Development, iOS Mobile App Development, Cross-Platform Mobile App Development, Flutter Mobile App Development, Dart, Java, Kotlin, Swift, SwiftUI, ChatGPT API Integration, Web Development, Web Application, Website Redesign, Website Optimization, Database Development, OpenAI, Agile Software Development, Google Analytics, Google Cloud Platform, RESTful Architecture, Amazon DynamoDB, SQLite, MySQL, MongoDB, Realm Database, PostgreSQL, Firebase Realtime Database, Node.js Framework, Back-End Development, API, React, Front-End Development, Full-Stack Development

I have hands-on experience in AI data annotation, labeling, and evaluation, supported by a strong scientific research background that emphasizes accuracy, consistency, and protocol adherence. Through freelance and platform-based AI projects, I have worked on image, audio, and content annotation tasks, carefully following detailed guidelines to produce high-quality training data for machine learning models. My background in biological research has strengthened my ability to analyze complex information, maintain precise documentation, and apply standardized evaluation criteria—skills that directly enhance my effectiveness in AI data labeling, quality assurance, and model training workflows.

Hello, Welcome to my profile! I’m a dedicated and reliable freelancer specializing in App Testing (iOS & Android), Persian–Pashto Translation, Social Media Management, and Virtual Assistance. My goal is to help businesses improve their products, communicate with wider audiences, and manage their online presence effectively. For the past 13 years, I have been living in the United States, where I gained valuable experience in customer support, communication, and social media management. This experience helps me understand clients’ needs and deliver professional, high-quality service. 💼 My Expertise 📱 App Testing (iOS & Android) • Functional testing • Usability testing • Detailed bug reporting • User experience feedback 🌐 Persian ↔ Pashto Translation • Accurate and natural translations • Manual translation (no machine tools) • Clear and culturally correct content 📲 Social Media Management • Managing social media accounts • Creating and scheduling posts • TikTok content posting and management • Audience engagement and growth support 🖥 Virtual Assistance • Customer support • Data entry and internet research • Email and administrative support • Daily business task management 🌎 Languages Fluent in English, Persian (Dari), and Pashto, allowing me to communicate easily with international clients. ⭐ Why Work With Me? ✔ Professional communication ✔ Fast and reliable delivery ✔ Attention to detail ✔ Client satisfaction is my priority I’m always ready to support your project and help your business grow. Let’s work together!