You will get your AI mobile app or SaaS prototype fixed and completed
Top Rated
Project details
Built your AI app or SaaS prototype with Lovable, Bolt, Cursor, Replit, v0, Base44, or an existing custom codebase? I can help turn it from a working demo into a stable, production-ready application.
Depending on your selected package, I can diagnose and fix bugs, complete unfinished workflows, repair authentication or database issues, connect frontend and backend APIs, improve AI integrations, optimize responsive UI, and address performance or security concerns.
I work with Next.js, React, TypeScript, Node.js, Python, Supabase, PostgreSQL, OpenAI, Claude, Stripe, and third-party APIs.
I will preserve what already works and only recommend rebuilding components when there is a clear technical reason.
Please message me before ordering so I can review your application and confirm the right package.
Depending on your selected package, I can diagnose and fix bugs, complete unfinished workflows, repair authentication or database issues, connect frontend and backend APIs, improve AI integrations, optimize responsive UI, and address performance or security concerns.
I work with Next.js, React, TypeScript, Node.js, Python, Supabase, PostgreSQL, OpenAI, Claude, Stripe, and third-party APIs.
I will preserve what already works and only recommend rebuilding components when there is a clear technical reason.
Please message me before ordering so I can review your application and confirm the right package.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$900
|
Advanced
$1,800
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 15 days |
Number of Revisions | 0 | 1 | 2 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | ||
Content Upload | - | - | - |
Responsive Design | |||
Source Code |
Frequently asked questions
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MS
Max S.
Apr 15, 2026
Full Stack Developer Needed for Creator Insights SaaS
Friendly team.
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Meryem A.
Sep 3, 2025
Final Polish & Feature Enhancements for AI-Powered Social Media Web App
Highly recommend this team. Great comunication and results
SH
Scott H.
Feb 13, 2025
Specialized React / Node.js all star, who has a speciality in UX/UI enhancements and user flows
They're the real deal, this team absolutely nailed it. As someone who’s been in software development for over two decades, I can spot quality work and solid processes a mile away, and they have both in spades. They’re prompt, efficient, and communicate every step of the way. The results exceeded my expectations, both in terms of functionality and ROI. Bonus points for being genuinely great people to work with—it made the entire experience smooth and productive. Highly recommend them.
AG
Antonio G.
May 17, 2024
Vue web app - Save new login credentials prompt & auto prompt to use stored login credentials
SS
Shruthi S.
May 1, 2024
Backend Engineer (Node.js, AWS, Serverless, OpenAI, Prisma) for Bummock AI
Had a great experience working with Haseeb and Umair through the platform. The developer assigned to the task was extremely diligent and completed all the tasks assigned on time. Would definitely recommend if you're getting started with your projects and need external help!
About Haseeb
Mobile App Development | React Native & iOS | AI Integration
100%
Job Success
Karachi, Pakistan - 6:27 pm local time
I build AI-powered mobile applications for founders and product teams that need more than screens. I handle the React Native or Flutter app, Node.js backend, APIs, real-time features, AI integrations, and launch preparation as one connected product.
I have been building software since 2014. On Upwork, I have earned $100K+ across 38 contracts and 4,164 hours, with 100% Job Success and Top Rated status.
𝗔𝗜 𝗠𝗢𝗕𝗜𝗟𝗘 𝗔𝗣𝗣 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧
I help clients build and improve:
✅ AI mobile apps using React Native, Flutter, Node.js, and OpenAI
✅ Cross-platform iOS and Android applications
✅ Flutter app development with Dart, Firebase, APIs, and push notifications
✅ Caregiver, wellness, and medical-education applications
✅ Calling and messaging apps with call history, contact rules, and real-time communication
✅ AI chat, document processing, semantic search, and voice-to-voice experiences
✅ Booking, payment, subscription, and marketplace workflows
✅ Real-time applications with notifications, live data, and reliable synchronization
✅ Existing mobile products that need new features, integrations, or backend improvements
𝗥𝗘𝗟𝗘𝗩𝗔𝗡𝗧 𝗣𝗥𝗢𝗝𝗘𝗖𝗧 𝗘𝗫𝗣𝗘𝗥𝗜𝗘𝗡𝗖𝗘
My longest Upwork client relationship was TeleCalm, a phone-safety product for seniors living with Alzheimer’s and their caregivers.
Across three contracts and approximately 1,641 hours, I worked on the caregiver mobile application and supporting telephony backend. The product handled contact management, blocked callers, call history, phone-service rules, telephony events, call records, and administrative visibility.
I have also delivered:
• A real-time voice-to-voice chatbot for iOS, Android, and web
• A React Native iOS application through a 548-hour, 5-star contract
• An AI creator-insights SaaS platform through an $8,000, 5-star contract
• A Node.js, AWS, Serverless, OpenAI, and Prisma backend for Bummock AI
• OpenAI-powered document processing, semantic search, and messaging applications
𝗠𝗢𝗕𝗜𝗟𝗘 𝗔𝗣𝗣 𝗔𝗡𝗗 𝗔𝗜 𝗘𝗫𝗣𝗘𝗥𝗧𝗜𝗦𝗘
Mobile App Development • AI Mobile App Development • React Native • Flutter • Flutter App Development • Dart • iOS Development • Android App Development • Cross-Platform App Development • Hybrid App Development • Node.js • TypeScript • OpenAI API • AI Model Integration • API Integration • REST API • PostgreSQL • Supabase • AWS • Firebase • Push Notifications • Chat and Messaging Software • Full-Stack Development
𝗛𝗢𝗪 𝗜 𝗪𝗢𝗥𝗞
* Understand the users, business requirements, and existing product
* Define the scope, architecture, milestones, and technical risks
* Build the mobile experience, backend, and integrations
* Share reviewable builds throughout development
* Prepare the application for testing, deployment, and store submission
* I can work from an early product idea, extend an existing application, or take ownership of a specific mobile or AI feature. I will also tell you when a feature adds unnecessary cost or complexity.
𝗡𝗘𝗫𝗧 𝗦𝗧𝗘𝗣
Send me:
• What the application does
• Whether it is new or already in development
• The main feature or problem you need help with
• Your preferred timeline
I will review the requirements and give you a direct assessment of the scope, technical approach, and best next step.
Steps for completing your project
After purchasing the project, send requirements so Haseeb can start the project.
Delivery time starts when Haseeb receives requirements from you.
Haseeb works on your project following the steps below.
Revisions may occur after the delivery date.
Review Requirments
Review the existing application, codebase, known issues, required workflows, and selected package scope.
Diagnose & Confirm Scope
Identify the root causes, dependencies, and highest-priority fixes before implementation begins.