Hire the Best Google App Engine Developers

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Manjit S.

Mohali, India

$50/hr
4.2
6 jobs

๐Ÿš€ Senior Full-Stack Developer | AI Automation Specialist | Web, Mobile & Cloud Solutions With 20 years in software engineering, I help businesses turn complex ideas into reliable, scalable web applications, mobile apps, and AI-powered automation systems. As Director of Oops Info Solutions โ€” an ISO-certified software company with teams in India and the USA โ€” I've architected and delivered hundreds of projects across web, mobile, cloud, and AI. I pair deep hands-on engineering with the ability to lead a project end to end: requirements, architecture, development, deployment, and long-term support. What I can help you with: ๐Ÿ’ป Full-Stack Web Development โ€ข React.js, Next.js, Node.js, Express.js โ€ข PHP, Laravel, WordPress, Shopify, MERN stack โ€ข JavaScript, TypeScript, REST APIs & integrations โ€ข Responsive, modern UI development ๐Ÿ“ฑ Mobile App Development โ€ข React Native & Flutter (cross-platform) โ€ข Native Android & iOS โ€ข Appโ€“backend integration and app store publishing ๐Ÿค– AI & Automation โ€ข OpenAI & Claude API integration โ€ข AI agents and assistants โ€ข n8n workflow automation โ€ข Business process & lead-generation automation โ˜๏ธ Cloud & Backend โ€ข AWS deployment and architecture โ€ข PostgreSQL, MySQL, MongoDB โ€ข Secure authentication & scalable system design โ€ข Payment gateway integration (Stripe, PayPal) Why clients choose me: โœ“ 20 years of proven delivery across industries โœ“ Backed by a full professional team when projects scale โœ“ Clear communication and reliable timelines โœ“ Clean, maintainable, well-architected code โœ“ Focus on long-term partnerships, not quick fixes Whether you need a complete web platform, a mobile app, AI automation, or a technical lead who can own the entire project โ€” let's talk.

  • React
  • MySQL
  • PHP
  • Laravel
  • React Native
  • Node.js
  • Android App Development
  • iOS Development
  • HTML
  • CSS
  • Next.js
  • WordPress
  • Flutter
  • AWS Development
  • Python
  • AI Agent Development
  • API Integration
  • PostgreSQL
Rexona K.

Jessore, Bangladesh

$15/hr
5.0
104 jobs

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. ๐Ÿš€ My Google Play Testing Services: โœ… Closed Testing Management: Complete handling of the 14-day testing period to satisfy Google Playโ€™s engagement requirements. โœ… Production Access Strategy: Expert guidance on the Google Play Console application process to ensure a 100% approval rate. โœ… Real-Device QA Testing: Professional mobile app testing on 12+ physical devices to provide authentic usage data and performance metrics. โœ… Bug Reporting & Analysis: Detailed QA audits to identify UI/UX glitches, crashes, and functional bugs before your public launch. โœ… Policy Compliance: Pre-submission reviews to ensure your app follows the latest Google Play Developer Program Policies. ๐Ÿ› ๏ธ Devices & Tools: โœ… Physical Devices: 12+ Real Android phones (Android 10 to Android 14). โœ… Platforms: Google Play Console, Firebase App Distribution, Jira. โœ… Testing Types: Manual Testing, Usability Testing, Regression Testing, and Beta Testing. I am committed to clear communication, high-quality app QA, and fast turnarounds. Letโ€™s get your app through closed testing and ready for production! Contact me today to successfully launch your app on the Google Play Store!

  • Alpha Testing
  • Beta Testing
  • Quality Assurance
  • App Development
  • Mobile App Development
  • Software QA
  • Functional Testing
  • Usability Testing
  • Android App
  • Smartphone
  • Mobile App Testing
  • Mobile Device
  • Mobile QA
  • QA Testing
  • Customer Support
Malik Noman T.

Faisalabad, Pakistan

$15/hr
5.0
20 jobs

๐Ÿ‘‹ Hi, I'm Noman, Mobile App Developer who takes your app from idea (or AI prototype) to LIVE on the App Store & Google Play. Your app is not done until it's LIVE and in your users' hands. That's exactly what I deliver. I help startups, founders, and businesses build fast, scalable, production-ready mobile apps with Flutter & React Native. I also specialize in taking AI-generated apps (Rork, Replit, Lovable, Bolt) and scaling, redesigning, and rebuilding them into real, stable apps that actually get published. ๐Ÿ† Top Rated | 100% Job Success | 5+ Years Experience ๐Ÿš€ WHAT I CAN HELP YOU WITH โœ… Full App Launch from code to LIVE on Google Play & App Store โœ… Flutter Mobile App Development (Android & iOS) โœ… React Native Mobile Apps โœ… Scale & Redesign AI-Generated Apps (Rork, Replit, Lovable, Bolt) โœ… Convert AI Prototypes into Real, Published Mobile Apps โœ… Fix Bugs, Clean Up AI-Generated Code & Improve Performance โœ… Backend Integration (Firebase / Supabase / REST APIs) โœ… UI Implementation from Figma / Designs โœ… App Store Rejections Fixed & Resubmission Handled ๐Ÿ’ก WHY LIVE MATTERS Many developers hand you code. I hand you a published app store listing, screenshots, app signing, review process, rejection fixes everything handled until your app is live and downloadable. Built an app with AI and it's stuck at prototype stage? I'll turn it into a real app your users can actually install. ๐Ÿง  TECH STACK ๐Ÿ“ฑ Mobile: Flutter ยท React Native ยท Rork AI ยท Replit AI ๐Ÿ’ป Backend: Firebase ยท Supabase ยท REST APIs ๐Ÿ”ง Tools: Git ยท Android Studio ยท Xcode ยท App Store Connect ยท Google Play Console ๐Ÿ“ฑ APPS I BUILD, SCALE & LAUNCH Startup MVP Apps AI-Generated Apps (scaling, redesign & production launch) Business & Admin Apps Booking & Service Apps Utility & Productivity Apps โญ WHAT YOU GET โœ” A LIVE app on the stores not just source code โœ” Clean, scalable code (even from messy AI codebases) โœ” Clear communication & on-time delivery โœ” Long-term support after launch ๐Ÿ“ฉ READY TO GO LIVE? Whether you have a new idea, a half-built app, or an AI prototype that's stuck send me a message. I'll review your project and give you a clear, honest plan to build, fix, and launch your app successfully.

  • Android App Development
  • iOS Development
  • Flutter
  • Node.js
  • Firebase
  • API Development
  • API Integration
  • App Development
  • Artificial Intelligence
  • ExpressJS
  • App Store Optimization
  • Web & Mobile Design Consultation
  • Hybrid App Development
  • FlutterFlow
  • AI App Development
  • App Design
  • App Store
  • Apple Xcode
  • App Store Upload
  • App Feature Development
Marcos M.

San Francisco, California

$75/hr
4.9
386 jobs

Have an app idea, an MVP to launch, or a vibe coding/AI prototype stuck in dev? Top 1% Upwork developer: My clients raised $350M+, hit 2M+ users, and earned 10K+ 5-star reviews. For 10+ years, Iโ€™ve helped entrepreneurs & business owners turn early concepts into scalable, high-revenue apps. Who I Help I speak founder and business, not just technical jargon. I am the right partner if you need to: โ€ข Fix & rescue a broken, "vibe-coded," or unfinished AI prototype. โ€ข Launch a lean MVP to validate your app idea quickly without overspending. โ€ข Scale an existing app or build custom internal software to streamline operations for your business. Why Work With Me? Iโ€™ve walked in your shoes. Over a decade ago, I was a non-technical founder hiring freelancers on Upwork. I made every costly mistake in the bookโ€”choosing the wrong tech stack, making bad hires, and skipping early user validation. Through two years of trial and error, I overcame those hurdles to launch SchooLinks (now an Inc. 5000 edtech platform with $90M+ raised). Later, as VP of Tech for UC Berkeleyโ€™s Entrepreneurship Association, I discovered a true passion for mentoring founders. Today, I dedicate my career to helping entrepreneurs & business owners launch web and mobile apps while bypassing those exact expensive missteps. Track Record & Achievements: โ€ข $350M+ Raised: Total funding secured by client apps built under my direction โ€ข 2M+ Active Users: Scale achieved across apps Iโ€™ve designed and developed โ€ข 10K+ 5-Star Reviews: User satisfaction on launched apps โ€ข Top 1% Talent: Recognized as a premier App Designer & Developer on Upwork โ€ข Trusted by Top Brands: Launched projects for Harvard, Samsung, Indeed, Yamaha, and USF Core Tech Stack & Tools โ€ข AI-Driven Development: Cursor, Claude Code, OpenAI, Gemini, Lovable โ€ข Frontend & Mobile: Flutter, Angular, Figma (UI/UX) โ€ข Backend & Cloud: Node.js, Supabase, AWS, MongoDB Letโ€™s Build Smart If this resonates with you, letโ€™s talk. I offer strategy consultations where weโ€™ll review your project and build a clear, actionable execution plan tailored to your goals. Reach out today to save months of frustration, cut thousands in wasted dev spend, and validate your app idea the lean way.

  • Mobile App
  • Mobile App Design
  • Mobile App Redesign
  • UI/UX Prototyping
  • Android
  • iOS
  • Web Application
  • Mobile App Development
  • Front-End Development
  • UX & UI
  • User Experience Design
  • iOS Development
  • Android App Development
  • Software Development
  • JavaScript
  • User Authentication
  • App Design
  • AI App Development
Igor Z.

Espoo, Finland

$30/hr
5.0
31 jobs

Full-stack remote developer and Product Owner with over 25 years of experience, holding a Masterโ€™s degree in Mechanical Engineering (Shipbuilding & Ship Repair). Career spans from 1993 AutoCAD automation (AutoLISP) and C/C++ to modern cloud architectures. Currently leading a multi-tenant game-performance estimation API at UL LLC used globally by PC manufacturers. Expert in Google Cloud Platform, Spring Boot, and React/Angular. Available 25+ hours/week for side projects.

  • Google App Engine
  • Java
  • Python
  • XMPP
  • Erlang
  • Amazon Web Services
  • Node.js
  • iOS
  • Spring Boot
  • Angular 10
  • Flutter
  • Mobile App Development
  • Android
Riya S.

Nagal, India

$18/hr
5.0
13 jobs

๐Ÿ…๐–๐ข๐ญ๐ก 7+ ๐ฒ๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž, ๐ˆ ๐ก๐ž๐ฅ๐ฉ ๐ฌ๐ญ๐š๐ซ๐ญ๐ฎ๐ฉ๐ฌ ๐š๐ง๐ ๐›๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ๐ž๐ฌ ๐›๐ฎ๐ข๐ฅ๐ ๐ฌ๐œ๐š๐ฅ๐š๐›๐ฅ๐ž, ๐ฉ๐ซ๐ž๐ฆ๐ข๐ฎ๐ฆ ๐š๐ง๐ ๐ฉ๐จ๐ฅ๐ข๐ฌ๐ก๐ž๐ ๐ฆ๐จ๐›๐ข๐ฅ๐ž ๐š๐ฉ๐ฉ๐ฅ๐ข๐œ๐š๐ญ๐ข๐จ๐ง๐ฌ, SaaS platforms, and AI-powered solutions. I focus on clean, maintainable code, reliable back end architecture, and seamless user experiences that turn ideas into victorious products. - ๐–๐ก๐ฒ ๐ˆ ๐š๐ฆ ๐ฉ๐ž๐ซ๐Ÿ๐ž๐œ๐ญ ๐Ÿ๐ข๐ญ: I combine strong technical expertise with a product-focused mindset to build scalable, high-quality solutions that align with your business goals. From planning and development to deployment and ongoing support. ๐Ÿ’ป ๐ˆ๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ข๐ž๐ฌ ๐ˆ'๐ฏ๐ž ๐–๐จ๐ซ๐ค๐ž๐ ๐–๐ข๐ญ๐ก โ€ข FinTech โ€ข Health & Fitness โ€ข E-commerce โ€ข Education (EdTech) โ€ข On-Demand Platforms โ€ข AI-Powered Applications โ€ข BLE & IoT/Hardware Solutions โ€ข Social Networking Apps โ€ข Sports & Fitness Applications โ€ข SaaS Platforms ๐Ÿ“Œ My Core Expertise โ€ข๐Œ๐จ๐›๐ข๐ฅ๐ž ๐€๐ฉ๐ฉ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Flutter, React Native, iOS, Android โ€ข๐…๐ซ๐จ๐ง๐ญ๐ž๐ง๐ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: React.js, Next.js, TypeScript, JavaScript โ€ข๐๐š๐œ๐ค๐ž๐ง๐ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Node.js, NestJS, Express.js, FastAPI โ€ขDatabase Design & Architecture: PostgreSQL, MySQL, MongoDB, Firebase Firestore, Supabase โ€ข๐‚๐ฅ๐จ๐ฎ๐ & ๐’๐ž๐ซ๐ฏ๐ž๐ซ ๐ˆ๐ง๐Ÿ๐ซ๐š๐ฌ๐ญ๐ซ๐ฎ๐œ๐ญ๐ฎ๐ซ๐ž: AWS, Google Cloud Platform (GCP), Microsoft Azure, Docker, CI/CD โ€ข๐€๐๐ˆ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ & ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ: REST APIs, GraphQL, Third-Party APIs, Payment Gateways, Authentication, Maps, Push Notifications โ€ข๐€๐ˆ & ๐€๐ฎ๐ญ๐จ๐ฆ๐š๐ญ๐ข๐จ๐ง: OpenAI, Gemini, Claude, LangChain, AI Chatbots, RAG, AI Agents, Workflow Automation โ€ข๐๐จ-๐‚๐จ๐๐ž & ๐‹๐จ๐ฐ-๐‚๐จ๐๐ž ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ: Bubble, FlutterFlow, Lovable, Replit, Base44, Firebase Studio ๐๐ซ๐ข๐ง๐ ๐ข๐ง๐  ๐ฒ๐จ๐ฎ๐ซ ๐ข๐๐ž๐š๐ฌ ๐ญ๐จ ๐ฅ๐ข๐Ÿ๐ž ๐ฐ๐ข๐ญ๐ก ๐ฆ๐จ๐๐ž๐ซ๐ง ๐ญ๐ž๐œ๐ก๐ง๐จ๐ฅ๐จ๐ ๐ฒ. ๐‚๐ฎ๐ฌ๐ญ๐จ๐ฆ ๐Ÿ๐ฎ๐ฅ๐ฅ-๐ฌ๐ญ๐š๐œ๐ค ๐ฆ๐จ๐›๐ข๐ฅ๐ž ๐š๐ง๐ ๐ฐ๐ž๐› ๐š๐ฉ๐ฉ ๐๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ ๐ญ๐š๐ข๐ฅ๐จ๐ซ๐ž๐ ๐ญ๐จ ๐ฒ๐จ๐ฎ๐ซ ๐›๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ ๐ ๐จ๐š๐ฅ๐ฌ.

  • Kotlin
  • SQL
  • Flutter
  • Swift
  • iOS Development
  • Node.js
  • PHP
  • RESTful API
  • Push Notifications
  • Hybrid App Development
  • iPad App Development
  • Mobile App Development
  • API Integration
  • In-App Purchases
  • React Native
  • AI Implementation
  • Android
  • iPhone
  • Android Smartphone
  • Dart

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At A Glance: Google App Engine

Creating and maintaining an application within the Google App Engine infrastructure allows you to connect with consumers from around the world on a platform they know and trust. Google App Engineโ€™s reliable service allows you to develop and run applications to put your business ahead, whether it specializes in the tech industry or is trying to broaden its reach. However, experience with Java, Python, Go, and PHP are required, in addition to an education in the many complex aspects of app development. Perhaps you have neither the time nor the skills to harness this advantageous engine yourself. The Google App Engine specialists and application developers on Upwork are here to take the burden off your shoulders by offering their highly-sought-after skills and unique experience to manage this vital task.

As freelancers, many of these experts have experimented in a wide range of professions and niches, enabling them to apply this vast knowledge and expertise to your project in the form of creative suggestions, specialized advice, and a sharp eye for bugs or technical issues. Their competitive rates make them the ideal choice for any project scale or budget, so you can receive the precise service you need. Their flexible schedules are designed to combat time zone differences and push you ahead with deadlines. With dozens of professionals to choose from on Upwork, youโ€™re sure to find the application developer you need to create the next generation of app, or the specialist to offer their critical eye towards maintaining and improving your project.