I help businesses turn ambitious ideas into stable, secure, production-grade mobile and web applications — not fragile prototypes that crash under real users.
With 8+ years of remote experience, I specialize in mission-critical systems, particularly in healthcare and operational environments where performance, security, reliability, and scalability are non-negotiable.
I don’t just write code — I design systems that survive growth, real users, and real-world complexity.
🏥 **Proven Production Experience**
I’ve built and maintained applications used daily by doctors, nurses, hospital staff, and operations teams.
That means I understand:
✔ Real users
✔ Real data
✔ Real consequences
✔ Real uptime requirements
✔ Real production environments
Not just polished demo apps — these are live systems built for actual business operations.
🤖 **AI Engineering & Integration**
I also help businesses integrate AI into existing applications and workflows in a practical, production-focused way.
I can build and integrate:
✔ AI-powered business workflows
✔ AI assistants and intelligent automation
✔ OpenAI and other AI API integrations
✔ LLM-powered features and applications
✔ AI-powered document and data processing
✔ AI chatbots and conversational interfaces
✔ Prompt engineering and structured AI workflows
✔ AI-assisted reporting, summarization, and analysis
✔ AI-powered search and knowledge systems
✔ AI integrations with existing Laravel, React, and mobile applications
✔ Automation using AI + APIs + business logic
I focus on **useful AI**, not AI for the sake of adding an AI label to an application.
My goal is to make AI reliable, secure, measurable, and actually useful in production.
💡 **What I Can Do for You**
📱 **Mobile App Development — React Native Specialist**
React Native (CLI & Expo)
Scalable architecture for long-term growth
Firebase push notifications (foreground & background)
WebRTC video calling and Zoom-like systems with waiting rooms
Offline-capable applications
Performance optimization for Android
APK & AAB production builds
Google Play Store deployment & support
Maps integration using MapLibre / Mapbox
AI-powered mobile features and API integrations
🌐 **Modern Web Applications**
React.js, Vite, Next.js
TypeScript
Clean UI with Tailwind CSS
Admin dashboards & internal systems
Secure role-based systems
Scalable frontend architecture
AI-powered dashboards and business workflows
AI chat interfaces and intelligent web applications
🔐 **Backend, APIs & AI Architecture**
Laravel REST APIs
PHP
Sanctum, JWT & custom authentication systems
Role-based access control
Real-time notifications
MySQL & PostgreSQL
Third-party API integrations
AI API integrations
LLM-powered backend workflows
Secure AI application architecture
Automation and background processing
Clean, scalable backend structure
I build backends that can support both **traditional business logic and modern AI workloads**.
🛠 **Example Systems I’ve Built**
Doctor–Patient Hospital Management System
Appointment scheduling & patient workflows
Prescription, laboratory & imaging modules
Multi-role real-time notification systems
Structured video consultation platforms
Production database management
Operational and workflow management systems
AI-assisted workflows and automation
These are live systems, not side projects.
🎯 **Why Clients Hire Me**
✔ Clear & honest communication
✔ Realistic timelines — no overpromising
✔ Clean, maintainable, well-structured code
✔ Production-focused development
✔ AI integration without unnecessary complexity
✔ Refactoring & rescuing broken systems
✔ Independent, reliable, long-term mindset
✔ Thinks in systems, not just individual features
Clients hire me when:
Their app needs stability
Their system needs restructuring
Previous developers left technical debt
They need AI integrated into an existing product
They want to automate repetitive business processes
They need someone to own the architecture
🧠 **How I Work**
Understand your business goals
Design scalable application and AI architecture
Build clean, testable code
Integrate AI where it provides real value
Optimize for production
Monitor performance and reliability
Support long-term growth
I treat your product like an **investment**, not a quick gig.
⚡ **Tech Stack**
**Frontend:** React Native, React.js, Next.js, TypeScript, Tailwind CSS
**Backend:** Laravel, PHP, REST APIs, Sanctum, JWT
**AI:** LLM APIs, OpenAI integrations, AI assistants, prompt engineering, AI automation, AI-powered workflows
**Mobile & Tools:** Firebase, WebRTC, Android Studio, Gradle, Git
**Database:** MySQL, PostgreSQL
**Integration:** REST APIs, third-party services, automation platforms
📩 **Let’s Build Something That Lasts**
If you need a dependable **Senior Full-Stack, Mobile & AI Engineer** who understands real-world systems — not just tutorials — send me a message.
Tell me about your project, and I’ll help you
React Native
PHP
Android
Web Development
TypeScript
Automation
Supabase
React
Mobile App Development
Android App Development
AI Mobile App Development
AI Model Development
Artificial Intelligence
LLM Prompt
OpenAI API
LangChain
Python
Node.js
RESTful API
Cloud Architecture
Quoc Huy D.
Ho Chi Minh City, Vietnam
$30/hr
5.0
11 jobs
As an AOSP (Android Open Source Project) engineer, I specialize in designing, customizing, and optimizing Android platform for various devices. My role involves working with the Android framework, HAL (Hardware Abstraction Layer), kernel, and system-level components to deliver tailored solutions for device manufacturers and developers. I am passionate about building robust and innovative systems that enhance user experiences and contribute to the Android ecosystem.
Embedded Linux
Firmware Programming
Reverse Engineering
Embedded C
Microcontroller Programming
Driver Development
Kernel
AOSP
PCB Design
Camera
Muhammad B.
Lahore, Pakistan
$5/hr
5.0
3 jobs
If you have an idea, I will build it — from the first screen to the final deployment.
I am a Senior Software Engineer specializing in mobile apps, web platforms, scalable backends, and AI-powered features. Whether you are a startup launching your first product or a business scaling an existing one, I handle the complete development process so you do not need to manage multiple developers.
What I build for you:
📱 Mobile Apps
Cross-platform iOS and Android apps using Flutter — fast, beautiful, and production-ready from day one.
🌐 Web Applications
Full-stack web platforms with clean frontends and powerful backends — built to perform at scale.
⚙️ Backend and APIs
Secure and scalable REST APIs and microservices using Node.js and NestJS — structured for long-term growth.
🤖 AI Features and Integrations
Practical AI solutions — intelligent chatbots, automation workflows, and LLM-powered features using OpenAI and LangChain.
🗄️ Database and Cloud
PostgreSQL, MongoDB, Firebase, Redis — deployed on AWS with CI/CD pipelines and zero-downtime releases.
How I work:
I ask the right questions before writing a single line of code. I communicate clearly at every step, deliver on time, and build products that actually solve real problems. No shortcuts, no surprises.
Tech Stack:
Flutter, React Native, AI, Dart, Node.js, NestJS, TypeScript, React, PostgreSQL, MongoDB, Firebase, Redis, Docker, AWS, OpenAI, LangChain, REST APIs, GraphQL
Have a project in mind? Send me a message and let us build something great together.
Flutter
React Native
Node.js
NestJS
Dart
React
Full-Stack Development
AI Mobile App Development
iOS Development
Android App Development
Web Application
Firebase
REST API
Chatbot
OpenAI API
LangChain
LLM Prompt Engineering
AI Development
Software Architecture
Mobile App Development
Marty L.
Rochester, New York
$120/hr
4.6
177 jobs
Looking for challenging new projects which can effectively use my talents and
creativity, to generate cost effective software solutions.
I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible".
I have a great deal of expertise in:
* real time embedded systems
* cross compilation/software construction
* source control
* network programming
* system administration
* kernel level programming/device drivers
* image processing
* performance and metrics
DHCP
Unix System Administration
Object-Oriented Design
Version Control
TCP/IP
Assembly Language
Git
FreeBSD
Driver Development
Linux System Administration
Embedded Linux
Agile Software Development
Apache Subversion
C
Image Processing
Mohsin I.
Bahawalpur, Pakistan
$13/hr
5.0
16 jobs
🏆 𝐑𝐞𝐜𝐨𝐠𝐧𝐢𝐳𝐞𝐝 𝐢𝐧 𝐭𝐡𝐞 𝐓𝐨𝐩 𝟏% 𝐨𝐟 𝐓𝐚𝐥𝐞𝐧𝐭 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 𝐟𝐨𝐫 𝐀𝐈 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 | 𝟔𝟎+ 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 | 𝟗+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 𝟖𝟎𝟎𝟎+ 𝐇𝐨𝐮𝐫𝐬 𝐁𝐢𝐥𝐥𝐞𝐝 | 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐈𝐎𝐒 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐀𝐈 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐦𝐞𝐧𝐭
✅ 60+ Mobile App Development projects delivered
✅ 100% Job Success as a Mobile App Developer
✅ 30+ apps published on App Store & Google Play
✅ AI-powered Mobile App Development using OpenAI
I specialize in Mobile App Development using Flutter, Android, and iOS technologies.
As a professional Mobile App Developer, I build scalable, high-performance applications that help businesses grow, automate processes, and generate revenue.
Being in the 𝘁𝗼𝗽 𝟏% of Mobile App Developers on Upwork, I’ve helped businesses succeed through high-quality Mobile App Development, building scalable apps that have generated millions in revenue and your idea could be next.
💡 𝐌𝐲 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
📱 𝐂𝐨𝐫𝐞 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬
✔ Full-cycle Mobile App Development (idea to launch)
✔ Cross-platform Mobile App Development (Flutter, React Native)
✔ Native Mobile App Development (Android & iOS)
✔ AI Mobile App Development & integrations
🛠️ 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐈 𝐔𝐬𝐞 𝐢𝐧 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭
✔️Mobile App Development: Flutter, Dart, Kotlin, SwiftUi
✔️AI: OpenAI API
✔️Backend & API: Node.js, Python (FastAPI, Flask, Django), REST, GraphQL
✔️Databases: Firebase, Firestore, SQLite, MySQL, MongoDB
✔️Cloud Services: Firebase Cloud Functions, AWS, Google Cloud
✔️Version Control & Tools: Git, GitHub, GitLab, Bitbucket, Jira, Trello
✔️UI/UX Tools: Figma, Adobe XD, Material Design, Cupertino Widgets
📊 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐒𝐨𝐥𝐮𝐭𝐢𝐨𝐧𝐬 𝐈’𝐯𝐞 𝐁𝐮𝐢𝐥𝐭
✔ Ride Instructor Booking Mobile App Development (like Uber) (iOS and Android)
✔ Real Estate Listing Mobile App Development (like Airbnb)
✔ Social Media Mobile App Development (iOS and Android)
✔ Task Management Mobile App Development (like To-Do) (iOS and Android)
✔ Investors Management Mobile App Development (Android & IOS)
✔ Sports Mobile App Development (iOS and Android)
✔ Food Delivery Mobile App Development (iOS and Android)
✔ E-commerce Mobile App Development (iOS and Android)
✔ Event Management Mobile App Development (iOS and Android)
✔ GroceryMobile App Development (Android & IOS)
✔ Freelance Mobile App Development (iOS and Android)
✔ Home Service Booking Mobile App Development (iOS and Android)
✔ Inventory Management Mobile App Development (iOS and Android)
✔ Learning Management Mobile App Development (iOS and Android)
✔ Appointment Booking Mobile App Development (iOS and Android)
✔ Venue Booking Mobile App Development (iOS and Android)
✔ Customer Relationship Management Systems (CRMs)
✔ On-demand Mobile App Development (iOS and Android)
🎯 𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞 𝐚𝐬 𝐘𝐨𝐮𝐫 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫?
✔ Proven experience in Mobile App Development
✔ Clean, scalable, production-ready apps
✔ Strong communication & fast delivery
✔ Long-term support after development
🤝 𝐖𝐡𝐚𝐭 𝐘𝐨𝐮 𝐆𝐞𝐭
1️⃣ A dedicated Mobile App Developer
2️⃣ Expert consultation on your Mobile App Development idea
3️⃣ Transparent and smooth development process
4️⃣ A high-quality product built for real users
🚀 𝐋𝐞𝐭’𝐬 𝐒𝐭𝐚𝐫𝐭 𝐘𝐨𝐮𝐫 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭
If you need a skilled Mobile App Developer for your next Mobile App Development project, feel free to invite me.
Let’s build something amazing together.
Highlighted Skills:
Flutter Mobile App Development | AI Mobile App Developement | Mobile App Development | Mobile App Developer | Flutter App | Flutter Developer | Flutter Firebase | Flutter Dart | Flutter App Developer | App Developer | Mobile Developer | React Native Mobile App Development | Mobile App Builder | Flutter Laravel | AI App Developer | AI App | Full Stack App Developer | Mobile App Development Consultation | iOS App Developer | Android App Developer | Hybrid App Development | Android | iOS | Cross-Platform Mobile Developer | Artificial Intelligence App Development | Machine Learning App Integration | Firebase App Developer | API Integration (Flutter) | Hybrid App Developer | AI Solutions for Mobile Apps | Senior Mobile App Developer | Dating App Development | Education App Developer | Saloon Booking Mobile App Development | Food Delivery Mobile App Development | Chat Mobile App Developer | Chat Buddy Mobile App Development | Node.js | Android
Mobile App Development
Flutter
App Development
Mobile App
iOS Development
Android App
Mobile App Development Consultation
Android App Development
AI Mobile App Development
Hybrid App Development
Mobile App Design
Mobile App Testing
Mobile App Bug Fix
iPhone & iPad Apps
Website to Mobile App Conversion
Firebase
API Integration
Node.js
Back-End Development
ExpressJS
Slavisa M.
Mali Zvornik, Serbia
$30/hr
4.9
19 jobs
Are you looking for a Senior Developer who can build, optimize, and scale your entire digital ecosystem using a unified, type-safe TypeScript stack?
With over 10 years of experience, I specialize in building enterprise-grade applications and high-performance SaaS platforms. By leveraging Angular, NestJS, and Next.js, I bridge the gap between complex business logic, rock-solid backend architecture, and blazing-fast user interfaces.
Whether you need to migrate a legacy system, set up an Nx Monorepo, or build a scalable product from scratch, I deliver clean, maintainable, and production-ready code.
🚀 HOW I HELP MY CLIENTS SUCCEED:
1. Enterprise Frontends (Angular):
Building highly structured, scalable apps using modern Angular patterns (Signals, RxJS, Standalone Components, and advanced routing guards like canMatch).
2. SEO & Consumer-Facing Apps (Next.js):
Developing lightning-fast corporate websites, e-commerce stores, and SaaS frontends utilizing App Router, Server Components, Server Actions, and SSR for maximum performance and SEO.
3. Robust API & Microservices (NestJS):
Designing secure, modular RESTful or GraphQL APIs with NestJS, utilizing dependency injection, strict DTO validation, and seamless database integration (PostgreSQL, MongoDB, Prisma, TypeORM).
🛠️ TECH STACK SUMMARY:
• Frontend: Angular (v14-v18+), Next.js (App Router), React, TypeScript.
• Backend: NestJS, Node.js, Express, RESTful APIs, GraphQL, WebSockets
• Databases & Cloud: PostgreSQL, MongoDB, Supabase, MySQL, AWS, Docker
• Architecture: Nx Monorepos, Shared DTOs, Microservices, Clean Code Patterns
💼 REAL-WORLD EXAMPLES OF MY WORK:
• Architected an enterprise dashboard in Angular, migrating it to Standalone Components and improving performance by 40%.
• Built a scalable multi-tenant SaaS API using NestJS and PostgreSQL, handling secure authentication and complex data relations.
• Developed an SEO-optimized web application using Next.js with Server-Side Rendering (SSR), reducing initial page load times to under 1.2 seconds.
I don't just write code; I think like a product owner. I focus on clean state management, minimizing bundle sizes, and ensuring your project remains scalable for years to come.
Let’s hop on a brief discovery call to discuss your project requirements and technical challenges.
Sass
TypeScript
JavaScript
HTML5
MySQL
PostgreSQL
Angular
React
NodeJS Framework
NestJS
API Integration
Docker
Amazon EC2
Amazon S3
Hybrid App Development
Next.js
Tailwind CSS
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Emerald Tiger
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Summa Linguae
At A Glance: Driver Development
From the physician’s office to the classroom, and Wall Street to Dubai, technology drives the course of the modern world. Almost all technological devices, from complex computer systems to pocket-sized smartphones, require some form of software and driver in order to operate. Whether you’re in the business of creating smart cars or high-tech surgical equipment, software and a dependable, high-quality driver are essential. The device driver, commonly referred to as a driver, provides a software interface to hardware devices that allows operating systems and other computer programs to quickly and easily access hardware functions. Software can take on many forms, including the underlying system with which a device runs and a network is controlled, or the applications users access on a computer or device in order to accomplish specific tasks. Whatever your driver development or software engineering needs, an experienced driver development expert or software engineer will ensure your technological device or piece of software stands above the rest. Software engineers apply engineering principles to maintain, test, develop, and evaluate software and systems across a multitude of devices and platforms. Driver developers possess an in-depth understanding of how software and hardware works for specific platforms and operating systems, including Windows, Android, and Linux.
On Upwork, you’ll be able to post your device driver project free of cost, and browse the profiles of numerous experienced driver developers and software engineers in order to locate a professional whose skill set best suits your project needs.