Hire the Best Mobile Web Developers

If you are searching for a Full-time Freelancer, iOS & Androids Apps, websites, tester then you are at the right place. I am highly skilled and with over 6 years of experience of testing and provide good Reviews. I have Unlimited android and iOS devices with different accounts available for apps testing. I also have USA and many more Regions Android & iOS Accounts and devices, so I can also provide USA, UK, CANADA, AUSTRALIA apps reviews. I have done so many testing projects you can check my profile. ✔️24 Hours I am here ready to provide services. 𝗛𝗲𝗿𝗲 𝗮𝗿𝗲 𝘁𝗵𝗲 𝗹𝗶𝘀𝘁𝘀 𝗼𝗳 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗜'𝗺 𝗼𝗳𝗳𝗲𝗿𝗶𝗻𝗴 - Provide 5 stars Good words reviews (Play store& App store) - Manual testing - Web Testing and Mobile Application Testing (IOS, Android) - Agile/Scrum methodology - API Testing - Test web and mobile applications - Google Maps Reviews - Developing QA documentation (Test cases) - Execute test cases - Bug reporting (detailed bug reporting includes Annotated screenshots or video) - Requirement analysis - Design testing - Virtual Assistant - Social media Managements My main goal is 100% client satisfaction and to provide the best quality work for all client's needs. Let's talk and work together soon! Best Regards Muhammad Yousaf.

Hi! I'm Tari 👋 a Manual QA Tester with hands-on experience testing web and mobile applications. I help clients identify critical bugs, validate user flows, and deliver clear, actionable bug reports with screenshots or recordings. I’m comfortable working on short-term testing tasks as well as ongoing QA support, with quick turnaround and clear communication. ✅ What I Can Help You With: • Manual Testing (Web and Mobile) • Cross-browser & Cross-device Testing • Functional, Regression & Usability Testing • Test Case Creation & Execution • Bug Reporting (JIRA, Google Sheets, or your preferred tools) • Basic automation Testing (e.g., Postman for API testing and Intellij) • UX Feedback & Edge Case Identification ✅ Why Work With Me? • Meticulous attention to detail — I love finding issues others overlook. • Communicative and reliable — always keeping you updated. • Flexible — quick to learn your tools and workflows. • Understanding both the user and developer perspective — leading to better issue reporting and collaboration. 🧪 Devices & Tools I Use: • Android (Xiaomi 13T, Android 13 & Oppo A78, Android 14) • iOS (iPhone XR, iOS 18,5) • Windows 11 (Laptop) • Chrome, Firefox, Edge • Screen recording & screenshot tools for bug documentation • LamdaTest, Devtools Chrome • JIRA, ClickUp, Notion Whether you need one-time testing support or a long-term QA partner, I’m ready to ensure your product reaches users in the best possible shape. Let’s make sure your software works flawlessly — under any condition! 🎉

# You need an honest and dedicated person passionate about technology # You see value of me running a 40x man software house built organically Software engineers from Poland are consistently ranked among the world's best, frequently placing in the TOP 3 globally on platforms. If you're still reading here, it means we might be a fit. I handle full products or build a dedicated team to works for you. I have clients working with for 12+ years now, but also do on-time proof of concept jobs. I like what I do as I enjoy bringing tech value and meeting people. I'm now a serial founder, advisor and a VC investor in Sweden and Singapore funds. But don't just take my word for it: 💬 “Not only was I impressed with the timely delivery of quality products, but I was also impressed by his integrity. I recommend Kacper 100% and would be happy to speak to anyone to provide more details!” – Brad M.
 💬 “Kacper, your company was able to deliver a working product where others have failed.” – Jamie J. 💬 “These guys have turned me around. They were flexible, responsive, fast, gave great feedback and got the job done. They have become my "go to" dev team.” – Tony C.
 💬 “Milo team has been fantastic and as dedicated as our employees in delivering high quality code and software.” – Mojgan H.
 💬 “Milo has delivered all the benefits of outsourcing with none of the problems.” - Mark M. 
 Here's a boring list of what my team and I can do for you. Hopefully Upwork will position my account higher because of this nice list below: ✅ Pre-Implementation Analysis (PIA): Before writing a single line of code, we create a clear roadmap through collaborative workshops to: • Define your business goals and user workflows • Reduce development risks by addressing challenges upfront • Speed up delivery with well-defined technical plans • Stay on budget by avoiding costly surprises What you get: • Business analysis - Goals, workflows, feature alignment • Technical architecture - Tech stack, UI/UX prototypes, scalability strategies • Development roadmap - POC to full product launch milestones • Workshop insights - Actionable next steps ✅ UI/UX Design & Product Design - User-Friendly Interfaces: Our design process creates beautiful, intuitive experiences: • UX research to understand user needs • Rapid prototyping and wireframes • High-fidelity mockups and design systems • Usability testing for seamless experiences 🛠️ Design tools: Figma, Adobe XD, Sketch, InVision, Balsamiq, Axure, Proto, Framer ✅ Full-Stack Development: • Architecture: Client-Server, Layered, Event-Driven, Peer-to-Peer (P2P), Plug-ins, Microservices, MVC ✅ Frontend & Backend Technologies: • Frameworks: Django, React, Angular, Node , Vue, Ember, Semantic-UI, Backbone, jQuery, Qt, Flutter, React Native • Languages: JavaScript, Python, C++, Qt, C, HTML, CSS, Rust, Perl, Go, TypeScript, SQL, Objective-C, Swift, Assembly, R • Databases: PostgreSQL, Redis, Elasticsearch, MySQL, SQLite, Oracle, MongoDB, SQL Server • DevOps: Git, Jenkins, Docker, Kubernetes, AWS, Ansible, Microsoft Azure, Vagrant, CI/CD pipelines, Sentry, Google Cloud, Selenium ✅ Mobile & Web Applications: • Cross-platform mobile apps (iOS, Android) • Progressive web applications (PWA) • Enterprise web solutions • API development and integrations ✅ Testing & QA: Comprehensive testing strategies: • Test-Driven Development - Catch issues early • Manual testing - Real-world scenario validation • Automated testing - Performance and accuracy • Cross-platform testing - Web, mobile, desktop, embedded systems ⚙️ QA Platforms: • Web: Chrome, Safari, Edge, Opera, Firefox, Brave • Mobile: Android, iOS, ChromeOS, Tizen • Desktop: Windows, macOS, Linux, ChromeOS • Embedded: Raspberry Pi, Arduino, SparkFun, Beagleboard, BeagleBone Black, NVIDIA, Rock Pi, SimpleLink, UDOO, QNX, VxWorks, Seeed, Intel Nuc, Embedded Linux, Odroid-C2, Banana Pi, Qualcomm Snapdragon • Protocols: I2C, SPI, USART, USB, DMA, I2S, ADC, DAC, CAN, Ethernet 🛠️QA Tools: TestRail, Selenium, Appium, Cypress , Postman, JMeter, Robot Framework, BrowserStack, Cucumber, Katalon, Squish, Zephyr, Bugzilla, Testim, SoapUI 💼 Industries we serve: • FinTech & Blockchain solutions • Healthcare & Biotech applications • E-commerce & Marketplaces • Education & EdTech platforms • Business Operations software • Embedded Systems & IoT • Travel & Hospitality apps 👨🏻‍🏫 Advisory & Fractional CTO Services: With 15+ years building software across 4 continents I can consult on: • Product strategy and technical roadmapping • Technology selection and architecture decisions • Team scaling and development processes • Investor-ready technical due diligence Ready to take your idea from concept to reality? Let’s talk. 📞

Since 2016, I have been on Upwork building and scaling web, mobile, and AI-powered applications. I have helped 60+ clients globally, maintained a 100% Job Success Score, and delivered 11,000+ hours of work, turning ideas into production-ready products. I have worked in teams of 50-100 members and led small to mid-sized teams across multiple projects to deliver complex systems end-to-end. I have successfully delivered 50+ web projects and 30+ mobile applications, all built and deployed in production environments, including handling app store submissions, approvals, and rejections. 👉 What I Build 👈 I design and build scalable mobile and web platforms using React, Next.js, Node.js, Angular, Express, Capacitor, Ionic, React Native, and Python, extended with AI capabilities like chatbots, voice agents (Vapi, ElevenLabs), LLM integrations (OpenAI, Gemini, Claude), and advanced workflows using LangChain and LangGraph, including RAG pipelines, agentic systems, and intelligent automation. I consistently help clients turn raw ideas, prototypes, and proofs of concept into production-ready MVPs using AI-assisted development tools like Claude Code, Cursor, GitHub Copilot and modern rapid-building approaches using vibe coding tools like Lovable and Replit for faster iteration and validation. My goal with every client is complete satisfaction, achieved through technical excellence, responsive communication, and proactive suggestions. 👉 How I Work 👈 I have worked extensively on cross-platform mobile applications using Capacitor, Ionic, React, Angular, and Vue, building and scaling production apps with a strong focus on performance, maintainability, and architecture. I have modernized legacy codebases, upgraded Angular and Ionic applications, and successfully migrated Cordova projects to Capacitor for better stability and long-term scalability. On the backend, I build stable and scalable systems using Node.js and Python, with experience across Firebase, Supabase, AWS, and GCP. I have handled real-time architectures, large datasets, and optimized infrastructure to improve performance and reduce operational costs, especially in Firebase-heavy applications. Most of the work I deliver today involves complete product systems where mobile apps, web platforms, and admin dashboards are connected through a shared backend, including SaaS platforms, subscription-based products, and data-driven applications that require reliability and scalability from day one. 👉 AI Development & Integrations 👈 My focus is on making AI genuinely useful inside products, not just adding it as a feature. I design AI workflows that fit into real user journeys, improving how users search and interact with data, automating repetitive tasks, and building systems that reason and respond intelligently. This includes structuring RAG pipelines, designing agent workflows, and implementing retrieval systems that work reliably at scale, with proper handling of edge cases, performance, and cost optimization. AI that improves the product experience and reduces manual effort. That is the standard I hold myself to. 👉 Core Skills & Technologies 👈 *Frontend & Mobile Development* ✔ Angular, React, Next.js ✔ React Native (Cross-platform mobile apps) ✔ Capacitor, Ionic (Modern hybrid app development) *Backend & APIs* ✔ Node.js (Express, NestJS), TypeScript, JavaScript ✔ Python (FastAPI, Django) ✔ REST APIs, GraphQL *Databases & Cloud* ✔ MongoDB, MySQL, PostgreSQL ✔ Firebase (Auth, Firestore, Realtime DB, Functions, FCM) ✔ Supabase (Auth, Realtime, Storage, Edge Functions) ✔ AWS, GCP, Azure *DevOps & Deployment* ✔ CI/CD pipelines (GitHub Actions, Bitbucket, GitLab CI) ✔ GitHub (version control, workflows, collaboration) ✔ Docker (containerization) ✔ Cloud deployments, environment management, monitoring *AI Development* ✔ OpenAI, Gemini, Claude integrations ✔ LangChain, LangGraph (AI workflows & agents) ✔ RAG pipelines, vector search, semantic retrieval ✔ Voice AI (Vapi, ElevenLabs) *AI Tools & Development Workflow* ✔ Cursor, GitHub Copilot, Claude Code ✔ Rapid MVP development using AI-assisted coding ✔ Code review, validation, and optimization of AI-generated code ✔ Rapid prototyping approaches (Lovable, Bolt, Replit) for faster iteration *Mobile Platforms* ✔ iOS & Android deployment, optimization, and app store management 👉 Why Clients Work With Me 👈 - I don’t just write code, I build products that are meant to scale and survive real users - Strong ownership from idea → MVP → production → scaling - Balanced expertise across mobile, web, backend, and AI, so you don’t need multiple developers - Fast execution using AI-assisted development, without compromising code quality - Experience handling real-world issues like performance bottlenecks, Firebase & Supabase, and app store rejections If you have an idea, MVP, or scaling issue? Send me the details. I will break down the approach, timeline, and next steps clearly. Best, Sandip

I am a cofounder of Create Neptune, a software and game development studio focusing on creating fun, user-focused, and beautiful apps and games for mobile (iOS / Android), web, PC, and consoles. Our developers and designers have worked on franchises like Scrabble and The Sims, and with companies like Mattel, EA, 2K Games, Estée Lauder, The New York Times, AppLovin (Lion Studios), and Boombit. I have led app development projects from the concept phase to post-launch marketing, and I am an expert in all stages of the application and game development life cycle. I am particularly attuned to the commercial side of application and game development: I was previously a hedge fund analyst focusing on the energy and power sector, and a mathematics, economics, and finance instructor. At Create Neptune I have published dozens of mobile games, with our most successful app Paddle Clash reaching millions of users worldwide since publication in mid-2020 and maintaining a 4.9 / 5.0 globally and 4.7 / 5.0 in the US on the App Store. Aside from our published portfolio, I have concepted, prototyped, and built dozens of other 2D and 3D games for a variety of clients, from Fortune 500 mega-caps to bootstrapped startups. I have over a decade of experience in game and app development. I typically work in Unity (C#), but I have also worked on successful native apps for iOS (Xcode, Swift) as well (Pandamonium, iOS, 4.7 / 5.0 on App Store). I have worked on numerous apps from the concept and prototype phases to post-launch marketing, so I can be with you every step of the way in the creative process. Specifically, in addition to coding, I can provide concept and prototype work, professional-quality UI and UX, 2D and 3D artwork, and marketing services. Lastly, I am very familiar with the post-launch app marketing process and publishing process on both the App Store and Google Play, and I would be happy to help you and your team with my experience. I began my career in finance as a mergers and acquisitions investment banker and an energy and power analyst at a distressed debt fund, completing the largest leveraged buyout in fund history and managing a book of $1.3 bn of energy and power assets. I have also worked as a mathematics and economics instructor, designing several advanced mathematics and financial analysis courses. My studio regularly works on cutting edge applications in Unity. Just a few examples: • We developed Scrabble Vision (Mattel), an AR companion application for the physical Scrabble board game, in Unity • We developed and helped design RYZ Home (IKIN), a holographic AR application, in Unity • We developed and designed software for a private research study (Estée Lauder), using OpenCV and AR, in Unity • We developed and designed StarStarter (Arcade Therapeutics), a digital anxiety treatment game, in Unity • We developed and helped design Skylar's Run (Thynk), a digital ADHD treatment game, in Unity • We developed and designed Highlandia (Highlands Community Charter), an English language learning game featuring 10 different mini-games, in Unity

𝐇𝐞𝐫𝐞'𝐬 𝐭𝐡𝐞 𝐝𝐞𝐚𝐥: Share your idea, and we’ll turn it into a functional, scalable, and beautifully designed app that solves real problems and generates revenue. 𝗛𝗼𝘄 𝗬𝗼𝘂𝗿 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗼𝘃𝗲𝘀 𝗙𝗿𝗼𝗺 𝗜𝗱𝗲𝗮 𝘁𝗼 𝗟𝗶𝘃𝗲 𝗣𝗿𝗼𝗱𝘂𝗰𝘁: Every project follows a clear, proven journey, divided into milestones: UI/UX design → Front-end development → Backend development → Deployment → Post-launch maintenance (8 weeks FREE) This ensures transparency, predictable delivery, and zero surprises. ---------------------------------------------- I offer a 𝗳𝗿𝗲𝗲 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 to discuss and refine your idea, recommend the right tech stack, and forecast any ongoing costs as your user base grows, so you avoid surprises and make informed decision with clarity. ---------------------------------------------- Words from a recent client after working with us: (check more on my profile below) "𝙍𝙖𝙟𝙖 𝙞𝙨 𝙫𝙚𝙧𝙮 𝙥𝙧𝙤𝙛𝙚𝙨𝙨𝙞𝙤𝙣𝙖𝙡 𝙖𝙣𝙙 𝙞𝙨 𝙖𝙡𝙬𝙖𝙮𝙨 10 𝙨𝙩𝙚𝙥𝙨 𝙖𝙝𝙚𝙖𝙙 𝙤𝙛 𝙠𝙣𝙤𝙬𝙞𝙣𝙜 𝙬𝙝𝙖𝙩 𝙩𝙝𝙚 𝙗𝙪𝙞𝙡𝙙 𝙣𝙚𝙚𝙙𝙨. 𝙒𝙚 𝙖𝙧𝙚 𝙘𝙤𝙣𝙩𝙞𝙣𝙪𝙞𝙣𝙜 𝙩𝙤 𝙬𝙤𝙧𝙠 𝙩𝙤𝙜𝙚𝙩𝙝𝙚𝙧 𝙖𝙣𝙙 𝙄 𝙝𝙖𝙫𝙚 𝙖𝙡𝙧𝙚𝙖𝙙𝙮 𝙧𝙚𝙘𝙤𝙢𝙢𝙚𝙣𝙙𝙚𝙙 𝙝𝙞𝙢 𝙩𝙤 𝙤𝙩𝙝𝙚𝙧 𝙘𝙤𝙢𝙥𝙖𝙣𝙞𝙚𝙨." ⭐⭐⭐⭐⭐ - 𝘼𝙡𝙞𝙘𝙞𝙖 𝘾𝙤𝙬𝙖𝙣 𝙁𝙤𝙪𝙣𝙙𝙚𝙧 𝙈𝙚𝙨𝙢𝙚𝙧 (𝙐𝙣𝙞𝙩𝙚𝙙 𝙆𝙞𝙣𝙜𝙙𝙤𝙢) ---------------------------------------------- I've majored in software engineering, and I've used a myriad of technologies to help various businesses create mobile apps that have generated millions in revenue. Over the past 5+ years, I have developed a wide range of iOS and Android mobile apps. ✅ Food delivery app ✅ Ride booking app (like Uber) ✅ Real estate listing app (Like Airbnb) ✅ Social media mobile app (like TikTok/Instagram) ✅ Startups/Investment management mobile app ✅ Wellness mobile app ✅ Fitness and Nutrition mobile app (like CalAI, MyFitnessPal) ✅ Sports mobile app ✅ E-commerce mobile app ✅ Language Learning Mobile App (Like Duolingo) ✅ Event management mobile app ✅ Grocery/Meal Planning mobile app ✅ Freelance mobile app ✅ Service Booking Mobile App (Home/HVAC) ✅ Inventory Management Mobile App ✅ Learning Management Mobile App ✅ Appointment Booking Mobile App (Salon/Doctor) ✅ Venue Booking Mobile App (Sports/Events) ✅ Task Management Mobile App (Project Management/To-Do) ✅ On-Demand Custom Mobile Apps ---------------------------------------------- As your 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗽𝗮𝗿𝘁𝗻𝗲𝗿, I go above and beyond to ensure your app’s success, from concept to launch. What I Also Bring Beyond Development: → Technology & architecture consulting → Product roadmap & feature prioritization → Help you understand any possible ongoing costs with the project → Cost-effective tech stack selection with long-term cost planning → Scalability strategy as your user base grows → Technical support during investor or stakeholder discussions ---------------------------------------------- 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲 & 𝗟𝗼𝗻𝗴-𝗧𝗲𝗿𝗺 𝗦𝘂𝗽𝗽𝗼𝗿𝘁 I provide free post-delivery support for 8 weeks, followed by flexible maintenance plans based on your product needs, usage scale, and future roadmap, always discussed transparently. ---------------------------------------------- 🚀 If you’re looking for someone who understands your product, owns outcomes, communicates clearly, and thinks long-term, let’s connect and build something solid. ❗❗ Check out my portfolio! ❗❗ Highlighted Skills: Full Stack Developer | Expert Full Stack Developer | Full Stack Mobile App Developer | Full Stack AI Developer | Expert Full Stack Mobile App Developer | Mobile Developer | iOS Developer | Android App Developer | Mobile App Development | Cross platform development | AI App Developer | AI App | Mobile Developer | App Developer | Mobile App Development Consultation | IT Consultation | App Developer | AI App Developer | iOS App Development | iOS App | Android App Development | Hybrid App development | Mobile App Development Consultation | Flutter | Firebase | Dart | Flutter Dart | Flutter Firebase | iOS Development | Android App Development | Smartphone | User Authentication | In App Purchases | API Integration