Iโm a ๐ ๐ฅ๐ฎ๐ญ๐ญ๐๐ซ & ๐ ๐ฅ๐ฎ๐ญ๐ญ๐๐ซ๐ ๐ฅ๐จ๐ฐ developer with 8+ years of experience building beautiful, high-performance cross-platform mobile apps for iOS, Android & Web using Dart, Firebase, Node.js and Supabase.
โ๏ธ ๐+ ๐๐๐๐ซ๐ฌ of Experience in ๐๐จ๐๐ข๐ฅ๐ & ๐๐๐ Development
โ๏ธ ๐๐+ $ ๐๐ฎ๐ง๐๐ข๐ง๐ raised by clients
โ๏ธ ๐๐+ ๐๐ฉ๐ฉ ๐๐จ๐ฐ๐ง๐ฅ๐จ๐๐๐ฌ | ๐๐+ ๐ฉ๐ฎ๐๐ฅ๐ข๐ฌ๐ก๐๐ ๐๐ฉ๐ฉ๐ฌ
โ๏ธ ๐๐จ๐จ๐ฌ๐ญ๐๐ ๐๐ซ๐จ๐๐ฎ๐๐ญ๐ข๐ฏ๐ข๐ญ๐ฒ ๐๐ฒ ๐๐% using AI Tools like Claude, GitHub Copilot & Cursor
โก ๐ญ ๐๐ผ๐๐ฟ ๐ฅ๐ฒ๐๐ฝ๐ผ๐ป๐๐ฒ ๐ง๐ถ๐บ๐ฒ | Available ๐ญ๐ด ๐๐ผ๐๐ฟ๐/๐๐ฎ๐
๐๐๐ง๐ค๐๐ ๐๐ฆ๐จ๐ง๐ ๐ ๐๐จ๐ฉ ๐% ๐๐จ๐๐ข๐ฅ๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ๐ฌ ๐จ๐ง ๐๐ฉ๐ฐ๐จ๐ซ๐ค
I help startups and businesses build ๐๐๐๐ฌ, prototypes, and full-scale apps ๐๐ ๐ ๐๐ฌ๐ญ๐๐ซ saving 50%+ in time and cost while delivering ๐๐ง๐ฏ๐๐ฌ๐ญ๐จ๐ซ-๐๐๐๐๐ฒ, ๐๐๐๐ฅ๐๐๐ฅ๐ ๐๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ.
From UI/UX to full backend integration, I handle everything โ including authentication, real-time databases, cloud functions, and analytics.
โ Why Choose Me
โก 1. Fast MVPs with Flutter & FlutterFlow
I build cross-platform apps using Flutter and FlutterFlow, helping you launch high-quality MVPs quickly โ with responsive UI and smooth performance on both iOS and Android.
๐ 2. Top Rated๐ฅon Upwork with 100% Job Success โ Trusted by Clients
Iโve earned the Top Rated badge on Upwork by consistently delivering high-quality work, 5-star reviews, and strong client satisfaction. Youโre working with someone whoโs proven, reliable, and easy to collaborate with.
๐ ๏ธ 3. Scalable Backends with Node.js, Firebase & Supabase
From authentication to real-time databases and cloud functions, I integrate powerful backend solutions using Firebase and Supabase โ designed for growth and reliability.
๐ง 4. Built-In Analytics with Mixpanel & Google Analytics tools
I implement Mixpanel and Google Analytics tools to give you real-time data on user actions, funnels, and retention โ so you can make smarter product decisions backed by analytics.
๐งโ๐ป 5. Clean, Maintainable Code
I write modular, well-documented Dart code thatโs easy to maintain and scale โ whether you're handing it off to another dev or building on it long-term.
6. Complete App Lifecycle Support
From wireframes to App Store & Play Store deployment, I handle the full app development process โ ensuring a seamless, end-to-end experience with zero guesswork.
๐ Skills ๐
๐ Flutter (Android, IOS, Web)
๐ FlutterFlow (Low-code MVPs & prototypes)
๐ Supabase & Firebase (Firestore, Auth, Storage)
๐ Mixpanel Integration (Event tracking, Funnels, User analytics)
๐ Android App Development (Kotlin, Java)
๐ PHP Laravel & Node.js
๐ Push Notifications (FCM)
๐ REST API Integration
๐ Custom UI & Animations
๐ iOS & Android Deployment
Expertise:
๐ข Real Estate
๐ E-commerce
๐ Automotive industry
๐ช Health and wellness
๐ฅ Technology and software development
๐ Digital marketing and advertising
๐ฅ Health care
๐ Food and beverage
๐ Education technology
๐ฐ Personal finance and wealth management
๐ Home improvement and remodeling
๐ฎ Virtual reality (VR) and augmented reality (AR)
๐ฑ Renewable energy and clean technology
๐พ Pet care and services Apps
๐ง Technical Skills Keywords
Flutter Developer, Dart Programming, FlutterFlow Expert, Supabase Integration, Firebase Developer,
Mixpanel Analytics, iOS App Development, Android App Development, Cross-Platform App Developmen,t Mobile App UI/UX, No-code/Low-code, FlutterFlow App, Performance Optimization,
Push Notifications, (Firebase/Mixpanel), Real-time Database Integration. Authentication & Firestore, Rules App Analytics, Event Tracking, MVP development. MVP Launch, VIBE Coding,
Kotlin
Flutter
FlutterFlow
Swift
Firebase
Java
iOS
Android App Development
iOS Development
Android
Mobile App Development
Hybrid App Development
Mobile App Development Consultation
Dart
Mixpanel
Flutter Stack
Suman M.
Kolkata, India
$15/hr
5.0
165 jobs
I am an AWS Certified Solutions Architect โ Associate with 20 years of experience delivering WordPress websites, web applications, mobile apps, cloud infrastructure, and AI-powered platforms.
With 100+ successfully completed Upwork projects, I help startups, agencies, and SMEs take digital products from initial planning through architecture, development, deployment, and ongoing improvement.
WordPress Development
WordPress is my primary specialization. I work on custom development projects where performance, maintainability, responsive implementation, and reliable deployment matter.
My WordPress services include:
โข Custom WordPress theme development
โข Custom plugin development
โข Website redesign and redevelopment
โข WordPress customization
โข Performance and Core Web Vitals optimization
โข Responsive frontend implementation
โข Third-party API and plugin integrations
โข Troubleshooting, migration, security, and deployment
My team has also developed and published custom WordPress plugins in the official WordPress Plugin Directory.
Web Application Architecture
I architect and lead small to medium-sized web applications using Node.js, Angular, React, PostgreSQL, MySQL, and MongoDB.
My responsibilities typically include:
โข Requirements analysis and technical planning
โข Solution and application architecture
โข Database architecture and design
โข API and integration planning
โข AWS infrastructure setup
โข Security, scalability, and deployment planning
โข Technical leadership and quality oversight
โข Direct client communication
I work with dedicated frontend, backend, UI/UX, and QA specialists. This gives clients a single accountable technical lead while ensuring that each part of the project is handled by an experienced specialist.
Mobile App Development
I architect and lead cross-platform and native mobile application projects using Flutter, Swift, and Kotlin. My experience includes six completed Flutter apps, two native iOS apps, and two native Android apps.
I oversee application planning, architecture, database design, API integration, AWS setup, quality, deployment, and client communication. Dedicated mobile specialists handle platform-specific implementation under my technical leadership.
I can also manage App Store and Google Play submissionโfrom release preparation and configuration through the publishing process.
Generative AI Solutions
As a Solution Architect and Lead AI Developer, I design production-focused Generative AI applications, including:
โข Retrieval-Augmented Generation (RAG) systems
โข Agentic AI workflows
โข AI assistants and conversational applications
โข Embedding and vector-search architecture
โข Prompt and retrieval strategy
โข Evaluation and accuracy-improvement workflows
โข OpenAI and LLM integrations
โข Python-based AI services
โข Qdrant and knowledge-retrieval solutions
My AI work includes land and parcel intelligence, clinical intelligence, and property-rental platforms. I personally design the solution architecture, RAG and agentic workflows, prompts, retrieval logic, evaluation approach, and implementation direction. Development teams complete the wider implementation under my leadership.
One clinical intelligence solution achieved approximately 85% final accuracy, 85%+ factual accuracy, 90% medical-validity accuracy, and an 80% reduction in manual review time.
AWS and Deployment
As an AWS Certified Solutions Architect โ Associate, verified by Upwork, I plan and configure secure, scalable cloud environments using services such as EC2, S3, Lambda, RDS, Cognito, and DynamoDB.
I can support your project from initial technical planning through production deploymentโwhether you need a custom WordPress website, a Node.js and Angular application, a Flutter or native mobile app, or a Generative AI solution.
If you need an experienced technical partner who can understand the business requirement, define the architecture, lead specialist teams, and remain accountable throughout delivery, send me an invitation to discuss your project.
Kotlin
WordPress
WordPress Development
WordPress Theme
WordPress Plugin
Website Redesign
Website Optimization
Node.js
Angular
Web Application
API Integration
Flutter
Swift
Mobile App Development
PostgreSQL
MySQL
MongoDB
Generative AI
Artificial Intelligence
Amazon Web Services
Abhin S.
Ahmedabad, India
$25/hr
4.9
48 jobs
I build the mobile apps that can't fail: official Amazon Location Android SDKs, ONWARD Medical's ARC-EX (a first-of-its-kind FDA-cleared spinal cord stimulator), and Fibe, a fintech lending app with 10M+ downloads.
I'm usually hired when a project involves more than standard app screens: real-time systems, BLE/IoT, AI, payments, hardware integrations, maps, regulated workflows, or complex architecture that needs senior ownership.
๐๐จ๐ซ๐ ๐๐ฑ๐ฉ๐๐ซ๐ญ๐ข๐ฌ๐
โช Android: Kotlin, Java, Jetpack Compose, MVVM, Clean Architecture
โช iOS: Swift, SwiftUI, native SDKs, platform channels
โช Cross-platform: Flutter and Kotlin Multiplatform (KMM)
โช BLE, IoT & hardware: medical devices, robotics, wearables, connected products
โช Real-time: WebRTC, Socket Programming, Twilio, video, low-latency chat
โช Maps & location: geofencing, live tracking, routing, custom SDKs
โช Fintech & payments: wallets, KYC, subscriptions, payment gateways
โช AI features: streaming chat, character memory, LLM integrations, on-device ML
โช App rescue: refactoring, crash fixing, performance tuning, architecture cleanup
๐๐ก๐ฒ ๐๐ฅ๐ข๐๐ง๐ญ๐ฌ ๐๐ข๐ซ๐ ๐๐
โ The app needs to scale: millions of users, peak traffic, complex state, performance-sensitive flows.
โก The app cannot fail: medical, fintech, real-time, hardware, or business-critical workflows where reliability is non-negotiable.
โข The app is technically difficult: BLE devices, AI, native SDKs, WebRTC, payments, maps, or legacy code that needs expert handling.
โฃ The product needs senior ownership: architecture, technical decisions, tradeoffs, code quality, and delivery without heavy supervision.
๐๐จ๐ฐ ๐ ๐๐จ๐ซ๐ค
โช I clarify the product goal, technical risks, and success criteria before writing code
โช I break work into clear milestones, so progress is visible
โช I share frequent updates and demo videos for major features
โช I communicate tradeoffs directly instead of hiding problems
โช I write production-grade code: clean architecture, reliable state management, testing, CI/CD readiness, maintainable structure
With 10+ years and 25+ shipped apps (three with 1M+ users), I've worked across fintech, healthcare, AI, robotics, BLE/IoT, real-time communication, and developer SDKs, including public contributions to Amazon Location Service under the AWS Geospatial organization.
If your mobile app is complex, high-value, scaling fast, connected to hardware, using AI, handling payments, or relying on real-time data, send me your goal, current stage, and biggest technical concern. I'll respond with a clear plan, a realistic timeline, and the safest way to move forward.
Kotlin
Flutter
JetPack
Android App Development
Mobile App Development
AI Mobile App Development
SDK
SwiftUI
Bluetooth LE
Firebase
Supabase
Payment Gateway Integration
Google Maps API
Geolocation
WebRTC
Generative AI
Unit Testing
CI/CD
Robotics
Full-Stack Development
Hinal D.
Surat, India
$15/hr
4.3
93 jobs
As a Mobile App Developer with 5+ years of experience who has contributed to mobile applications with over ๐ณ๐ฌ๐ + ๐ฑ๐ผ๐๐ป๐น๐ผ๐ฎ๐ฑ๐. I help startups, founders, and enterprises build AI-powered mobile applications for iOS, Android, and Flutter, transforming ideas into scalable, high-performance products from MVP development to App Store and Google Play launch.
I've delivered mobile applications across 80+ projects for clients in 20+ countries, working with startups, growing businesses, and enterprise teams to build products that solve real-world challenges.
- ๐๐ป๐ฑ๐๐๐๐ฟ๐ ๐๐ ๐ฝ๐ฒ๐ฟ๐ถ๐ฒ๐ป๐ฐ๐ฒ:
Since joining Upwork, Iโve worked across various industries: Travel and Tourism, train ticket booking, transport, educational, hospitality, health & wellness, real estate, live streaming, Marketplace, food & delivery, human resources, fitness, financial & banking sectors, e-commerce, dating, sports, Betting, music/audio, and automotive. I'm always excited to explore new industries - what's your industry?
๐๐ ๐ฝ๐ฒ๐ฟ๐๐ถ๐๐ฒ ๐ถ๐ป ๐ฎ๐ฟ๐ฒ๐ฎ๐:
- Mobile App Development for iOS, Android
- AI App Development & AI Feature Integration
- Cross-Platform App Development
- MVP App Development for Startups
- Flutter App Development
- iPhone app development
- iPad app development
- Native Android App Development
- AI Chatbot & AI Agent Integration
- RESTful API, GraphQL & Third-Party SDK Integration
- Firebase & Supabase Integration
- Payment Gateway Integration
- Subscription Integration
- Push Notifications & Real-Time Features
- User Authentication & Authorization
- Real-Time Chat & Audio/Video Calling Integration
- Maps, Geolocation & Navigation Integration
- BLE & IoT Device Integration
- Mobile App Feature Enhancement
- App Performance Optimization & Bug Fixing
- App Store & Google Play Publishing
- Ongoing Maintenance & Technical Support
๐ง๐ฒ๐ฐ๐ต๐ป๐ผ๐น๐ผ๐ด๐ถ๐ฒ๐ ๐ฎ๐ป๐ฑ ๐ง๐ผ๐ผ๐น๐ ๐๐ป๐ผ๐๐น๐ฒ๐ฑ๐ด๐ฒ:
- Dart, Swift, Kotlin, Java
- Flutter, React Native
- SwiftUI, UIKit, Xcode
- Android SDK, Android Studio, Jetpack Compose
- Firebase, Supabase, Firebase Authentication
- Firestore, Firebase Realtime Database, SQLite, Room, PostgreSQL, MongoDB
- BLoC, Provider, Riverpod, MVVM, Clean Architecture
- OpenAI, Claude AI, Google Gemini
- REST APIs, GraphQL, WebSocket
- Google Maps, Mapbox, Geolocation, Geofencing, Deep Linking
- Stripe, RevenueCat, Adapty, Apple Pay, Google Pay, Razorpay, In-App Purchases
- Firebase Cloud Messaging (FCM), OneSignal, Firebase Analytics, AppsFlyer, Mixpanel, Crashlytics
- GitHub, GitLab, Android Studio, Xcode, Jira, Trello, Figma
- ๐๐น๐ผ๐ฏ๐ฎ๐น ๐ช๐ผ๐ฟ๐ธ ๐๐ ๐ฝ๐ฒ๐ฟ๐ถ๐ฒ๐ป๐ฐ๐ฒ:
I have collaborated with clients from many countries including United States, United Kingdom, Germany, India, Australia, Israel, Netherlands, Canada, Hong Kong, Saudi Arabia, Denmark, Jamaica, Luxembourg, Italy, Romania, Kenya, Singapore, Indonesia, Jordan, Spain, Trinidad and Tobago, France, and more around the globe.
I understand the different needs of international markets and love to create easy-to-use applications that meet the unique needs of clients in various industries.
Thanks for visiting my profile.
------------------------------------------------------------------------
Skilled Flutter Developer, Experienced Mobile App Developer, Native Android App Developer, iOS App Developer, iOS Developer, Cross-Platform Flutter App Developer, Top Flutter Developer, React Native, Hire Best Flutter App Developer, Mobile App Development, Skilled Mobile App Developer, RESTful API Developer, API Integration, Figma, UI/UX Design, Prototype, In-app purchases, Location, Payment Gateway Integration, Apple Xcode, Android Studio, Push notifications, User authentication, User profile creation, QA, Unit Testing, Regression Testing, Dating App, Ecommerce App, Ride Booking App, 3rd Party SDK Integration, Realm, SQLite, MySQL, Firebase Cloud FireStore, Realtime Database, Kotlin, Swift, Dart, SwiftUI, Twilio, Mapbox, HealthKit, Alamofire, Google Analytics, Amazon Web Services, DigitalOcean, Core Data, UIKit, MapKit, Smartphone, API integration
Kotlin
Mobile App Development
Mobile App
iOS Development
Android App Development
iOS
Android
AI Mobile App Development
AI App Development
Flutter
SwiftUI
Swift
iPad App Development
Firebase
Node.js
Mobile App Design
Mobile App Development Consultation
iPhone & iPad Apps
Smartphone
User Profile Creation
Sandeep K.
Paonta Sahib, India
$10/hr
4.8
98 jobs
Looking to implement the solution that will help you accelerate your business? Let me help you to bring that idea to life.
=====================================
Things I can help you with
=====================================
โ Nail down the app and the website that will make your processes easier
โ Answer any question in regards of app and web development
โ Design light and smooth workflows
โ Identify opportunities and synergies in your processes
โ ChatGPT integration expert
Area of Proficiency:
=================
- iOS and Android: Swift, SwiftUI, Xcode, Kotlin, Java, Objective C, Android Studio
- PHP, Python, Javascript, HTML5, CSS3
- React Native, Flutter, Ionic, React, XML, Redux
- Laravel, Cake, Code Ignitor, WordPress, Drupal, Jquery, Ajax
- Database: MySql, MongoDB, NoSQL, PostgreSQL
- MEAN and MERN Stack: Node.JS, Express.JS, Angular, React.JS.
My comprehensive approach to development includes:
==============================================
- Strategy
- Design
- Architecture
- Planning
- Development
- Quality Control
- Maintenance & Support
But I donโt stop there - I also specialize in cutting edge technologies such as:
==============================================================
**Machine Learning**
- OpenAI, Llama, Elevent Labs, Google TTS, Tesseract
- Pre-LLM based using OpenAI, Custom models generation
- Predictive Models, NLP, Computer Vision, Chatbots, AI Agent, Recommendation Engines
**Bluetooth devices**
- BLE
- Beacon
I have deep expertise in routine areas such as:
========================================
**Real Time Streaming of Video/Audio**
**e-Commerce Shops**
**In-App Purchases**
**Secure Payment Processing via Bank/Credit/3rd party**
**Email & Push Notifications**
**Real Time Chat/Chat Bots**
**Location Services**
ห Dating app
ห Fintech app
ห Healthcare, Wellness app
ห Taxi app
ห Delivery app
ห Chats & Messengers app
ห Audio, Video chats app
ห Fitness, Sport app
ห Social media app
ห Attendance app
ห Babysitting app
ห E-commerce app
ห Employee scheduling app
ห Fleet Management app
ห Flight booking app
ห Language Learning app
ห Live streaming app
ห Luggage storage app
ห Meditation app
ห On-demand services app
ห Doctor appointment app
ห Online pharmacy app
ห Parking app
ห Pet Sitter app
ห Real estate app
ห Restaurant app
ห School Bus tracking app
ห Survey app
ห Task management app
ห Telemedicine app
In case my portfolio sparks your interest in working with me, let's meet up today and let's get the project rolling!
Kotlin
AI App Development
Python
iOS Development
PHP
Android
SwiftUI
Django
Laravel
Flutter
React Native
Web Development
OpenAI API
ChatGPT
App Development
Mitanshu N.
Jodhpur, India
$8/hr
4.9
51 jobs
I help startups and businesses build high-performance, production-ready mobile applications for iOS and Android using both native and cross-platform technologies. With 8+ years of experience, I've launched mobile products from MVP to enterprise scale, delivering apps that are fast, scalable, and built for long-term growth.
My expertise spans native iOS development with Swift, SwiftUI, and UIKit, cross-platform development with Flutter and React Native, and the backend systems required to power modern mobile applications.
Mobile Development Expertise
๐ฑ Native iOS Development (Swift, SwiftUI, UIKit)
๐ Flutter (Cross-platform iOS & Android)
โ๏ธ React Native (Hybrid Mobile Applications)
๐ค Android Development
๐ฅ Firebase & Supabase
๐ Push Notifications
๐ GPS & Real-time Location Tracking
๐ณ Payment Integrations (Stripe, Razorpay, Apple Pay)
๐ฌ Chat, Messaging & Real-time Features
๐ Authentication & Security
๐ฆ App Store & Google Play Deployment
โก Performance Optimization & App Maintenance
Supporting Technologies
React.js & Next.js
Node.js & Express.js
PostgreSQL, MongoDB & Firebase
REST APIs & Third-party Integrations
AWS, Railway, Render & DigitalOcean
Industries I've Built For
SaaS Platforms
Marketplace Applications
Logistics & Delivery Apps
E-commerce Solutions
AI-powered Mobile Applications
Subscription-based Apps
Gym & Business Management Systems
On-demand Service Platforms
I develop complete mobile productsโfrom UI implementation and app architecture to backend integration, cloud deployment, and App Store/Google Play release. Every project follows clean architecture, scalable code practices, and modern development standards.
Whether you need a native iOS application, a Flutter app, a React Native application, or a complete mobile product backed by scalable APIs, I can take your idea from concept to production.
Mobile-first development. Clean architecture. Reliable delivery.
Kotlin
iOS
Objective-C
Swift
Android
Java
Firebase
iOS Development
Android App Development
RESTful API
Full-Stack Development
Flutter
FlutterFlow
React Native
Redux
SwiftUI
JetPack
SaaS Development
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a Kotlin Developer in India on Upwork?
You can hire a Kotlin Developer in India on Upwork in four simple steps:
Create a job post tailored to your Kotlin Developer project scope. We'll walk you through the process step by step.
Browse top Kotlin Developer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Kotlin Developer profiles and interview.
Hire the right Kotlin Developer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Kotlin Developer?
Rates charged by Kotlin Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Kotlin Developer in India on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Kotlin Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Kotlin Developer team you need to succeed.
Can I hire a Kotlin Developer in India within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Kotlin Developer proposals within 24 hours of posting a job description.