Hire the Best Mobile Freelancers
in Bangladesh

Flutter developer for iOS and Android mobile apps, specializing in Flutter, Dart, Firebase, Supabase, MVP development, and Flutter bug fixing. I help startups and product teams turn a Figma design, product idea, or existing codebase into a fast, scalable mobile app ready for the App Store and Google Play. WHY CLIENTS HIRE ME • Top Rated freelancer with 100% Job Success • $20K+ earned across 33 Upwork jobs and 846+ hours • 7+ years of Flutter and Dart development • 40+ mobile products delivered for startups, agencies, and product teams • Experience supporting products with 1M+ downloads, 100K+ users, and high-volume daily usage FLUTTER MOBILE APP DEVELOPMENT • Flutter MVP development for startups and founders • Cross-platform iOS and Android app development • Firebase development: Authentication, Firestore, Cloud Functions, FCM, chat, and realtime sync • Supabase development: PostgreSQL, authentication, storage, and offline-first workflows • Figma to Flutter: responsive UI, animations, and polished mobile UX • REST API and GraphQL integration • Stripe, in-app purchases, payment gateways, Google Maps, GPS, Bluetooth LE, and AI integrations • Flutter bug fixing, performance optimization, refactoring, and legacy app rescue • TestFlight, App Store, Google Play, Fastlane, CI/CD, and production release support SELECTED MOBILE APP EXPERIENCE • TakeCare: Built healthtech workflows for caregiving, medicine delivery, pathology services, and operations; the app has 1M+ downloads. • GymChamp: Built a Flutter + Firebase fitness community with challenges, QR interactions, leaderboards, messaging, and photo sharing for 100K+ users. • Wolker EV: Delivered a smart e-bike app with BLE lock/unlock, GPS tracking, battery monitoring, and ride analytics for 50K daily users. • InterviewAI: Founded and engineered an AI voice-interview SaaS for candidate screening, evaluation, reporting, and hiring workflows. TECH STACK Flutter, Dart, Firebase, Firestore, Cloud Functions, Supabase, PostgreSQL, SQLite, REST API, GraphQL, Node.js, BLoC, Riverpod, Stripe, Google Maps SDK, GPS, Bluetooth LE, push notifications, Figma, OpenAI API, Fastlane, and GitHub Actions. Send your app idea, Figma file, requirements, or existing Flutter repository. I’ll reply with a practical technical plan, timeline, key risks, and the fastest path to a production-ready mobile app.

Are you looking for a Google Play Console expert to help you pass the mandatory closed testing phase? I specialize in providing the 12 testers and 14 days of continuous engagement required for new developer accounts to gain Production Access. With a 100% success rate, I help developers move from closed beta to a live Play Store release. I don't use bots or emulators; I provide authentic manual app testing using a fleet of 12+ real Android devices (Samsung, Pixel, Xiaomi, etc.). This ensures your Google Play production access application is approved without flags or policy rejections. 🚀 My Google Play Testing Services: ✅ Closed Testing Management: Complete handling of the 14-day testing period to satisfy Google Play’s engagement requirements. ✅ Production Access Strategy: Expert guidance on the Google Play Console application process to ensure a 100% approval rate. ✅ Real-Device QA Testing: Professional mobile app testing on 12+ physical devices to provide authentic usage data and performance metrics. ✅ Bug Reporting & Analysis: Detailed QA audits to identify UI/UX glitches, crashes, and functional bugs before your public launch. ✅ Policy Compliance: Pre-submission reviews to ensure your app follows the latest Google Play Developer Program Policies. 🛠️ Devices & Tools: ✅ Physical Devices: 12+ Real Android phones (Android 10 to Android 14). ✅ Platforms: Google Play Console, Firebase App Distribution, Jira. ✅ Testing Types: Manual Testing, Usability Testing, Regression Testing, and Beta Testing. I am committed to clear communication, high-quality app QA, and fast turnarounds. Let’s get your app through closed testing and ready for production! Contact me today to successfully launch your app on the Google Play Store!

Hello, Are you looking for a seasoned QA Engineer and Manual Tester with over 5 years of hands-on experience ensuring the delivery of high-quality, bug-free software products? Then I am here to assist you. I am specialized in manual testing for web, mobile, and desktop applications, with a sharp eye for detail, strong analytical skills, and a passion for uncovering hidden issues before your users do. ✅ What I Offer: → Comprehensive manual testing (Functional, Regression, UI/UX, Usability, Cross-browser, and Compatibility) → Test case creation and execution based on business and technical requirements → Bug reporting with clear steps to reproduce (using tools like Jira, Trello, Bugzilla, etc.) → Test documentation: Test plans, test cases, test reports → Agile/Scrum environment experience → API testing using Postman → Strong understanding of SDLC/STLC and defect lifecycle 🧰 Tools & Technologies: → Test Management: Jira, TestRail, Zephyr → Bug Tracking: Jira, Mantis, Trello → Collaboration: Slack, Asana, Confluence → Browsers: Chrome, Firefox, Safari, Edge → Platforms: Windows, macOS, Android, iOS 🎯 Why Choose Me? → Detail-oriented, methodical, and committed to high-quality outcomes → Strong communication and timely delivery → Client-focused mindset with a dedication to understanding product goals Let’s make your website/application reliable, stable, and user-friendly! Feel free to invite me to discuss your QA/testing needs. Best regards, Md Tasnimul Hasan

Hi! I'm Md Umar Faruk, a Mobile App Developer specializing in Flutter app development, Android app solutions, and Google Play publishing support. I help developers and businesses launch and improve mobile apps—from development to release. My services include: ✅ Flutter App Development ✅ React Native App Development ✅ Android App Customization & Reskin ✅ 12 Testers Closed Testing ✅ Play Store Publishing Support ✅ Firebase Integration ✅ App Testing & Optimization ✅ UI Implementation from Figma Let’s turn your app idea into a published product.

I’m a dedicated Lead Generation specialist with proven experience in finding accurate, high-quality leads for businesses worldwide. Skilled in market research, data mining, and contact sourcing, I help clients connect with the right decision-makers faster. My goal is to deliver reliable data that drives growth and saves your time. 📌 Expertise in 🔍 Lead Research 📧 Cold Email 📄 Data Entry 🌐 Web Research 📑 PDF/Image to Word or Excel Conversion 📊 Google Sheets / Excel Spreadsheet 🛎 Virtual Assistance 🏠 Property Owner Contact Information 📇 Venture Capital 🔍 Angel List 🌀 Crunchbase 📌 Knowledgeable in 🔹 LinkedIn Sales Navigator 📧 Email Hunter 📇 Rapportive 🌀 Data.com 🗂 Hoover 📄 Google Docs 🖋 MailTester 🌐 Search Engines (Mozilla Firefox, Google Chrome, etc.) 📧 Apollo.io 📩 Mailchimp 🏙 Reonomy.com 🗃 Resimpli.com 📋 Airtable 🏡 Airbnb 🗃 Causeiq.com 📄 Non-Profit Organization Research 📌 Skills & Strengths 💬 Proficient in English 💻 Computer Literate 🌸 Basic Knowledge in Adobe Photoshop 🤖 Artificial Intelligence (AI) 💬 ChatGPT 📌 Work Ethic & Values ⏳ Committed to Timeliness 💬 Quick & Clear Communication 🤝 Honesty ✅ 100% Client Satisfaction 🎯 Accuracy

Most SaaS products look fine. But users drop off because the experience doesn't guide them. I fix that. I'm Saif — a Product Designer with 8+ years building SaaS, fintech, and mobile products for Y Combinator startups and Fortune 100 companies. 100% Job Success. 🥇 Top Rated Freelancer — TOP 3% ✅ Industry: e-commerce, Fintech, Fitness, Healthcare, B2B, CRM, AI, Education, crypto ✅ Expert in: Wireframing, Prototyping, Mockup, UI Graphics, UX research, User flow, Figma 📩 👉 Press “𝐈𝐍𝐕𝐈𝐓𝐄 𝐓𝐎 𝐓𝐇𝐄 𝐉𝐎𝐁” or “𝐒𝐄𝐍𝐃 𝐀 𝐌𝐄𝐒𝐒𝐀𝐆𝐄” and I’ll get back to you shortly. EXPERT IN ✅ Mobile App Design ✅ Website Design ✅ Landing Page Design ✅ SaaS Design INDUSTRIES I OFTEN WORK WITH ✔️ AI & Automation Platforms ✔️ SaaS & Web Applications ✔️ Fintech & Digital Products ✔️ E-commerce Platforms ✔️ Health Tech Why clients hire me • 8+ years designing SaaS & digital products • 100+ projects across startups and companies • Strong UX thinking — not just UI visuals • Clean Figma files ready for developers • Reliable communication and delivery CORE SERVICES ✔️ UI/UX design ✔️ Mobile app design ✔️ Web design ✔️ Landing page design ✔️ Dashboard design ✔️ SAAS Product design ✔️ Branding WORK PROCEDURE → Goal Identification: Define project goals and target audience. → Researching: Gather in-depth information about your industry, competitors, and target users. → Brainstorming: Collaborate to generate creative ideas and solutions. → User Flow: Map out the user's journey for a seamless experience. → Wireframing: Create low-fidelity prototypes for layout and functionality visualization. → Final Visual Design: Transform wireframes into high-fidelity designs with a focus on aesthetics and usability. → Prototyping: Create interactive prototypes for design testing and user feedback. → Deliver and Developer Handoff: Provide final design files and specifications for smooth implementation. MAJOR TOOLS ✨ Figma ✨ Sketch ✨ Adobe Photoshop ✨ Adobe Illustrator ✨ Adobe XD ✨ Framer ABOUT ME Currently, I am the full-time CEO of a UX design agency called "Sleeko_Studio". Over the past 8 years, I have transitioned from a UX designer to a Product Design Lead. I have experience working with renowned Fortune 100 companies. I was the founding product designer at CMOlist & Sprout. Most of the companies I worked with were Y Combinator-backed startups based in the USA. 🔎 YOU MIGHT FIND ME IN: Lovable, Conversion Rate Optimization, SaaS designer, SaaS design, B2B SaaS, Senior Designer needed, Experienced designer, B2C Web App Design, B2B Web Application designer, Web App UX/UI, Dashboard design, Software designer needed, Map-based SaaS, Desktop Software Design, MVP design, MVP prototype, clickable prototype, mockups, mockup design, UI/UX, UI Design, UX design, User Interface Design, Graphic design, Landing Page Design, User Experience Design, Web & Mobile Design, Responsive Web Design, UI Research, User Flow, Android and iOS app design, mobile design, Graphics & UI Design, eCommerce web design, Clickable prototype, User Interface, iOS app design, prototype design, responsive web design, Webdesign, web design, logo design, Material Design, eCommerce app design, website design, Adobe Photoshop, GUI design, Figma, UX Research, wireframes design, InVision, UX/UI Designer, Web & Mobile Design, Responsive Design, Website, Sketch, Adobe Photoshop, Web-design, Branding, Web Application design, Redesign, Responsive, SaaS, Adaptive Design,