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You will get REST APIs Development and Fixing
Top Rated
Project details
HELLO
⭐️ ARE YOU LOOKING FOR AN EXPERIENCED REST APIS DEVELOPER?
I have 7+ years of experience in developing APIS and You will get Data-driven android, ios, and web highly scalable and maintainable RESTful APIs.
✅ I can develop RESTful web services for your applications. I have skills in PHP and Java programming languages. I will develop RESTful APIs using PHP. You can get a response of APIs in JSON or XML according to your requirements.
✅ My priority is customer satisfaction and building state of an art applications. Mobile Apps development is my passion and I'm confident in building complex and scalable applications which can be used by millions of users.
============ MY SKILLS=============
1. Android (Java, Kotlin)
2. IOS (Swift, Objective-C)
3. PHP (Codeignitor, Laravel)
4. MySQL
5. MongoDB
6. Linux
7. AWS (Amplify)
8. Monolithic & Microservices
9. Amplify
10. Web Development
11. Nodejs
12. Admin Panel
13. REST APIs Development
============LETS MAKE IT HAPPEN=============
I'm excited to move forward please let me know once you are available for further discussion so we can make this happen.
Looking forward,
Regards,
Tausif
🟢 TOP RATED SELLER UPWORK
⭐️ ARE YOU LOOKING FOR AN EXPERIENCED REST APIS DEVELOPER?
I have 7+ years of experience in developing APIS and You will get Data-driven android, ios, and web highly scalable and maintainable RESTful APIs.
✅ I can develop RESTful web services for your applications. I have skills in PHP and Java programming languages. I will develop RESTful APIs using PHP. You can get a response of APIs in JSON or XML according to your requirements.
✅ My priority is customer satisfaction and building state of an art applications. Mobile Apps development is my passion and I'm confident in building complex and scalable applications which can be used by millions of users.
============ MY SKILLS=============
1. Android (Java, Kotlin)
2. IOS (Swift, Objective-C)
3. PHP (Codeignitor, Laravel)
4. MySQL
5. MongoDB
6. Linux
7. AWS (Amplify)
8. Monolithic & Microservices
9. Amplify
10. Web Development
11. Nodejs
12. Admin Panel
13. REST APIs Development
============LETS MAKE IT HAPPEN=============
I'm excited to move forward please let me know once you are available for further discussion so we can make this happen.
Looking forward,
Regards,
Tausif
🟢 TOP RATED SELLER UPWORK
Programming Languages
PHP, JavaScript, JavaCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, W3C Markup Validation ServiceWhat's included
| Service Tiers |
Starter
$250
|
Standard
$500
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 5 days | 20 days | 25 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 5 | 20 | 30 |
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $200
Additional Revision
+$50Frequently asked questions
115 reviews
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JK
Jake K.
Aug 10, 2026
Build an App based on existing website
JW
Jamie W.
Jul 22, 2026
Phase 2 MobileWash Pro
This is closing out the 3rd of 4 major, fullstack modules for a complicated application. This team continues to do terrific work. High quality, accountable to outcomes, clear communicators. This module required iOS/android/web responsive build and some complicated external payment API integrations. This team truly is full stack. I could not recommend them more. I am willing to discuss live with anyone who wants more detail.
SB
Sam B.
Jun 9, 2026
30 minute consultation
Tausif made a clear plan to move forward when i had no idea what to do. He is very thoughtful and detail oriented. i am very happy
PE
Priceless E.
May 23, 2026
mobile app feature updates
ML
Maryam L.
May 16, 2026
This is not for a job post - I want to hire someone to create an app for me
Tausif was an excellent web developer. He was courteous, professional on time and always available. I would highly recommend him as he is seasoned and experienced.
About Tausif
Mobile App Development | React Native Development | Claude Code Expert
97%
Job Success
Lahore, Pakistan - 1:30 am local time
My work in 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭sits where product thinking, engineering, and delivery meet. I build React Native and Expo products with Swift/Kotlin depth, AI capabilities, scalable backends, cloud infrastructure, and production release ownership.
Whether you are building from zero, rescuing an inherited codebase, modernizing a live app, or preparing for scale, I can take ownership from Figma and architecture through 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, backend integration, App Store / Google Play release, and beyond.
◆ REACT NATIVE + MOBILE APP DEVELOPMENT
As a 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫, I engineer production-ready iOS & Android applications.
◈ React Native • React Native CLI • Expo • EAS
◈ TypeScript • JavaScript • React
◈ Swift • SwiftUI • Kotlin • Native iOS & Android
◈ Figma to React Native • UI/UX • Mobile Architecture
◈ Native SDKs • API Integration • App Modernization
◈ Code Audits • App Rescue • Debugging • Performance
◈ CI/CD • App Store • Google Play
◆ AI MOBILE APP DEVELOPMENT
I approach 𝐀𝐈 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 as product engineering, not as “adding a chatbot.”
◈ OpenAI API • LLMs • Generative AI
◈ AI Agents • Agentic Workflows • Tool / Function Calling
◈ AI Chatbots • Conversational AI • AI Assistants
◈ RAG • Semantic / Vector Search • Voice AI • NLP
◈ Recommendations • Document / Image AI • AI Automation
As a 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 building AI-enabled products, I connect:
𝐌𝐨𝐛𝐢𝐥𝐞 𝐔𝐗 → 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 / 𝐄𝐱𝐩𝐨 → 𝐀𝐈 𝐌𝐨𝐝𝐞𝐥 / 𝐀𝐠𝐞𝐧𝐭 → 𝐀𝐏𝐈𝐬 → 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 → 𝐃𝐚𝐭𝐚 → 𝐂𝐥𝐨𝐮𝐝 → 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧
◆ FULL-STACK PRODUCT ENGINEERING
My 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 work extends across the systems behind the experience.
◈ Backend: Node.js • Express.js • MERN • PHP • Laravel • REST APIs
◈ Web/Admin: React.js • Angular • SaaS Portals • Dashboards
◈ Data: MongoDB • PostgreSQL • MySQL • Firebase • Supabase
◈ Cloud: Microsoft Azure • Authentication • Storage • CI/CD • Deployment
𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗔𝗽𝗽 → 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 → 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 → 𝗔𝗱𝗺𝗶𝗻 → 𝗔𝗜 / 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 → 𝗖𝗹𝗼𝘂𝗱 → 𝗣𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻
I understand how APIs, data, infrastructure, and UX affect one another, so decisions are made for the product as a whole.
◆ DESIGN → ENGINEERING → DEPLOYMENT
I can join at the idea, Figma, MVP, inherited codebase, live app, or modernization stage.
𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆 → 𝗨𝗜/𝗨𝗫 → 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 → 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 → 𝗦𝘄𝗶𝗳𝘁 / 𝗞𝗼𝘁𝗹𝗶𝗻 → 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗔𝗣𝗜𝘀 → 𝗔𝗜 → 𝗤𝗔 → 𝗖𝗜/𝗖𝗗 → 𝗔𝗽𝗽 𝗦𝘁𝗼𝗿𝗲𝘀 → 𝗖𝗹𝗼𝘂𝗱 → 𝗠𝗮𝗶𝗻𝘁𝗲𝗻𝗮𝗻𝗰𝗲
◆ INDUSTRIES + SELECTED EXPERIENCE
FinTech • Digital Banking • Payments • Digital Wallets • Healthcare • AI/SaaS • Marketplaces • On-Demand • Social & Dating • Booking • Accounting
𝗧 𝗣𝗹𝘂𝘀 • 𝗭𝗮𝗵𝗿𝗮𝗣𝗮𝘆 • 𝗔𝗰𝗰𝗼𝘂𝗻𝘁𝘆 • 𝗧𝗶𝗺𝗲𝘇𝘇𝗶 • 𝗔𝗟𝗕𝗔 • 𝗩𝗶𝘁𝗮𝗹 𝗦𝗶𝗴𝗻𝘀
◆ BUILD • RESCUE • MODERNIZE • SCALE
◈ Build React Native / Expo products from zero
◈ Turn Figma or MVPs into production-ready apps
◈ Rescue unfinished or unstable applications
◈ Fix crashes, performance, builds, and release blockers
◈ Upgrade React Native / Expo and modernize legacy apps
◈ Add Swift / Kotlin native functionality
◈ Integrate AI, APIs, payments, subscriptions, Firebase & Supabase
◈ Build Node.js / Laravel backends and admin platforms
◈ Publish to App Store / Google Play
◆ RELEVANT EXPERTISE
Mobile App Development • React Native Developer • React Native Development • Frontend Development • Backend Development • Full-Stack Development • MERN Stack • React.js • Node.js • Express.js • TypeScript • JavaScript • Expo • React Native CLI • iOS Development • Android Development • Swift • Kotlin • Angular • PHP • Laravel • REST API • API Integration • Firebase • Supabase • MongoDB • PostgreSQL • MySQL • Microsoft Azure • AI Mobile App Development • OpenAI API • LLM Integration • AI Agents • AI Chatbots • RAG • RevenueCat • Stripe • CI/CD
◆ HAVE A PRODUCT TO BUILD, FIX, OR SCALE?
Send me an 𝗨𝗽𝘄𝗼𝗿𝗸 𝗶𝗻𝘃𝗶𝘁𝗲 𝗼𝗿 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 with your idea, Figma, current app, or technical challenge. I’ll review the context and share a brief initial technical direction — likely approach, key risks, and next step.
You can also 𝗯𝗼𝗼𝗸 𝗮 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 for React Native Development, Mobile App Development, app rescue, AI integration, architecture, or launch strategy.
Steps for completing your project
After purchasing the project, send requirements so Tausif can start the project.
Delivery time starts when Tausif receives requirements from you.
Tausif works on your project following the steps below.
Revisions may occur after the delivery date.
Project Requirements
All details of the required REST APIs
Develop Apis
Develop APIs with documentation