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$35/hr
100%
Job Success
$100K+ earned
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Greetings! I am a Mobile App Developer with more than 11 years of experience building applications for iOS and Android. I specialize in React Native development, Flutter development, and native iOS development using Swift. I work with startups, founders, and companies that need reliable mobile software built for real users and real products.
Over the years I have helped launch and improve many mobile apps, from early MVP products to large production applications used by thousands of users. My focus is building stable, scalable, and maintainable mobile applications that work smoothly on both iOS and Android.
As a React Native developer and Flutter developer, I build cross platform mobile apps that share a strong codebase while still delivering a native user experience. When a project requires deeper platform control, I also develop native iOS apps using Swift, ensuring performance, reliability, and clean architecture.
I often join projects where a company needs an experienced mobile developer to build an app from scratch, improve an existing mobile product, or refactor a growing codebase so it can scale properly.
Mobile Development Expertise
Mobile App Developer
React Native Developer
Flutter Developer
iOS Developer (Swift)
Android App Development
Cross Platform Mobile Development
Mobile App Architecture
Mobile App Performance Optimization
Mobile App Development Services
Mobile app development for iOS and Android
React Native app development
Flutter mobile development
Native iOS development with Swift
Building cross platform mobile applications
Improving existing mobile apps
Refactoring legacy mobile codebases
REST API and GraphQL API integration
Firebase integration and backend services
Real time features such as chat and push notifications
Payment systems and subscriptions
Maps and location services
Mobile performance optimization
Bug fixing and long term maintenance
App Store and Google Play deployment
Tech Stack
React Native
Flutter
Swift
Firebase
Node.js
Supabase
REST API
GraphQL
Android Studio
Xcode
GitHub
AWS
Google Cloud
Programming Languages
JavaScript
TypeScript
Dart
Swift
Kotlin
Platforms
iOS
Android
iPadOS
Web
Databases
Firebase
PostgreSQL
MongoDB
MySQL
SQLite
Redis
I build mobile apps that are stable, scalable, and ready for release.
If you need a React Native developer, Flutter developer, or Swift iOS developer, I can help build or improve your mobile product.
Associated with
DevIT Solutions
$100K+
earned
$20/hr
98%
Job Success
$400K+ earned
Available now
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🚀 Top-Rated Plus Full-Stack Developer | 10+ Years | 570+ Projects Delivered
I’m a Top-Rated Plus Full-Stack Software Developer with over a decade of hands-on experience building secure, scalable, and high-performance applications like - CMS, ERP, CRM, LMS, DMS, eCommerce Marketplace, SaaS etc. using PHP, MEAN, MERN, Python and modern web technologies.
Transforming ideas into secure, scalable, high-performance web apps for startups and enterprises. Expert in PHP, Laravel, SaaS platforms, and AI integrations—delivering real business solutions, not just prototypes.
My focus goes beyond coding. I help design robust architectures, scalable SaaS platforms, and AI-driven solutions that are built for long-term growth.
🔥 What I Build for You
⇨AI-powered SaaS platforms that scale
⇨Custom Laravel & PHP web applications
⇨High-performance backend systems (web & mobile)
⇨Secure, API-driven architectures
⇨Advanced admin panels & dashboards
⇨AI/LLM integrations (ChatGPT, automation, intelligent workflows)
🏆 Proven Across Industries
⇨ E-commerce & Marketplaces
⇨ Travel & Hospitality Platforms
⇨ ERP & CRM Systems
⇨ AI & LLM-based Applications
⇨ Automotive Platforms (rentals, inspections, ERP)
⇨ Social Platforms (Tinder-like, TikTok-style apps)
⇨ Retail & Sales CRMs
⇨ Sports & Fitness Tech
⇨ Legal Tech & Automation
⇨ Healthcare & AI Solutions
⇨ LMS & EdTech Platforms
⇨ Fintech & Banking Integrations
⇨ Manufacturing & Workflow Automation
⇨ HRM & Workforce Systems
⚡ Tech Stack Mastery
⇨ Backend & Frontend
⇨ PHP, Laravel, CodeIgniter, Symfony, Yii, Zend, CakePHP
⇨ Vue.js, React.js, React Native
⇨ Node.js, Express.js, Nuxt.js
⇨ HTML5, CSS3, JavaScript
⇨ CMS & Platforms
⇨ WordPress, Magento, Drupal, Joomla
⇨ AI & Automation
⇨ ChatGPT / LLM integrations
⇨ Intelligent workflows & automation systems
⇨ APIs & Integrations
⇨ Stripe, PayPal, Twilio, Xero, DocuSign, Google Maps
⇨ Social APIs (Facebook, Instagram, Twitter)
📦 Services I Offer
⇨ Custom Laravel & PHP Development
⇨ SaaS Product Architecture & Development
⇨ RESTful API & Third-Party Integrations
⇨ React / Vue Frontend Development
⇨ Admin Panels & Data Dashboards
⇨ Payment Gateway & SMS Integration
⇨ SPA (Single-Page Applications)
⇨ Performance Optimization & Bug Fixing
✅ Proven Delivery Experience
⇨ SaaS Platforms
⇨ Multi-vendor Marketplaces
⇨ On-demand Service Apps
⇨ Travel & Booking Systems
⇨ Job Portals & B2B Platforms
⇨ Custom eCommerce Solutions
⇨ Inventory & Operations Management Systems
📈 Communication You Can Trust
Daily updates via Upwork (chat/video), JIRA, Azure DevOps, Asana, Trello transparent, on-time delivery every time.
Ready to scale your vision? Let's chat I will turn your idea into a production-ready powerhouse.
Associated with
Flexsin Inc. - Top Rated+ Agency
$10M+
earned
$20/hr
100%
Job Success
$70K+ earned
Available now
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Top Rated Full Stack Developer helping startups, SaaS founders, agencies, and growing businesses build scalable web applications, AI-powered platforms, enterprise software, customer portals, dashboards, CRM systems, and high-performance SaaS products.
🏆 Top Rated on Upwork
⭐ 100% Job Success
⭐ 55+ Successful Projects
⭐ 3,200+ Hours Worked
⭐ 12+ Years Experience
⭐ Long-term Client Relationships
If you're looking for someone who can take ownership of your entire application instead of just writing code, you're in the right place.
For over 12 years I've helped founders transform ideas into successful software products. I don't simply build features. I help architect applications, solve techniSenior Full-Stack Developer specializing in React, Next.js, and Node.js. I build SaaS products and AI-powered web apps for startups and growing companies, Top Rated on Upwork with a 100% Job Success Score across 55+ projects and 3,200+ hours delivered.
Where I do my best work:
• SaaS platforms — dashboards, admin panels, billing, multi-tenant apps
• AI integration — OpenAI/LLM features, chatbots, RAG, and workflow automation
• React & Next.js frontends — fast, responsive, and accessible
• Node.js / TypeScript backends — REST and GraphQL APIs that scale
• Stripe and payment integrations, third-party APIs, and legacy modernization
A few things I've shipped: an e-learning platform, a real-estate platform with intelligent matchmaking and real-time messaging, a CRM for a logistics company, and an AI-powered fintech app. Clients describe my work as reliable, clearly communicated, and built to last — you can read their reviews below.
The way I work is simple: I plan before I build, I write clean and maintainable code, and I verify before calling anything done, so you get stability, not surprises. I respond within a few hours and keep you updated the whole way through.
If you're launching a new SaaS product, adding AI features, or scaling an existing app, send me a message with what you're working on and I'll tell you honestly how I can help.
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WHY CLIENTS KEEP COMING BACK
Clients appreciate that I communicate clearly, meet deadlines, and think like a product owner rather than simply completing assigned tasks.
I ask the right questions before development begins, identify potential risks early, and recommend solutions that save both time and money.
Many of my clients stay with me for months or years because they know I care about building reliable software that continues to perform as their business grows.
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CLIENT FEEDBACK
★★★★★
"Excellent developer with outstanding communication. Delivered exactly what we needed, ahead of schedule. We will definitely hire him again."
★★★★★
"One of the best Full Stack developers we've worked with on Upwork. Great architecture decisions, clean code, and proactive throughout the project."
★★★★★
"Very reliable, highly skilled, and always available when needed. He solved complex issues that previous developers couldn't."
★★★★★
"Our SaaS product became significantly faster after the optimization work. Great experience from start to finish."
★★★★★
"Professional, knowledgeable, and easy to work with. He took ownership of the project and consistently exceeded expectations."
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MY DEVELOPMENT PROCESS
Understand your business goals
Plan the architecture
Build scalable features
Write clean, maintainable code
Thorough testing
Performance optimization
Secure deployment
Ongoing support and continuous improvements
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TECHNOLOGIES
React.js • Next.js • Node.js • Express.js • NestJS • TypeScript • JavaScript • MERN Stack • PostgreSQL • MongoDB • MySQL • Supabase • Firebase • Redis • Prisma • GraphQL • REST API • Docker • Kubernetes • AWS • Vercel • Netlify • Stripe • OpenAI • ChatGPT • GPT-4 • Claude • Gemini • LangChain • LangGraph • Pinecone • ChromaDB • RAG • AI Agents • SaaS • CRM • ERP • Marketplace • Dashboard • Admin Panel • Enterprise Applications • Workflow Automation • API Integration • Authentication • Authorization • JWT • OAuth • CI/CD • Git • GitHub • Agile • Scrum
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Whether you need an experienced React Developer, Next.js Developer, Node.js Developer, MERN Stack Engineer, SaaS Architect, AI Developer, Technical Lead, or someone who can own your product from idea to launch, I'd be happy to discuss your project.
Send me a message with your requirements, goals, or even just an idea. I'll review it, suggest the best technical approach, and help you build software that's scalable, maintainable, and ready for long-term success.
Associated with
Expertinasia Pvt. Ltd.
$100K+
earned
$30/hr
100%
Job Success
$300K+ earned
Available now
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🚀 𝐒𝐞𝐧𝐢𝐨𝐫 𝐒𝐚𝐚𝐒 & 𝐌𝐕𝐏 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 8+ 𝐘𝐞𝐚𝐫𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞
I help startups and growing businesses build 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐬 and 𝐜𝐫𝐨𝐬𝐬 𝐩𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐰𝐞𝐛 & 𝐦𝐨𝐛𝐢𝐥𝐞 𝐚𝐩𝐩𝐬, starting from idea validation to production-ready systems.
With more than 8 years of hands-on full-stack experience, I focus on clean architecture, performance, and real business outcomes, not just writing code.
𝐖𝐡𝐚𝐭 𝐈 𝐝𝐨 𝐛𝐞𝐬𝐭:
• 𝐒𝐚𝐚𝐒 𝐩𝐫𝐨𝐝𝐮𝐜𝐭 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 for B2B and B2C platforms
• 𝐌𝐕𝐏 & 𝐏𝐫𝐨𝐨𝐟 𝐨𝐟 𝐂𝐨𝐧𝐜𝐞𝐩𝐭 development for startups
• 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐖𝐞𝐛 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 using modern frameworks
• 𝐂𝐫𝐨𝐬𝐬 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 with a single codebase
• 𝐒𝐜𝐚𝐥𝐚𝐛𝐥𝐞 𝐛𝐚𝐜𝐤𝐞𝐧𝐝 𝐀𝐏𝐈𝐬, integrations, and cloud systems
𝐖𝐡𝐲 𝐜𝐥𝐢𝐞𝐧𝐭𝐬 𝐜𝐡𝐨𝐨𝐬𝐞 𝐦𝐞:
• Strong product mindset, not just development
• Clear communication and structured execution
• Experience building applications trusted by users and investors
• Long-term focus on maintainable and scalable solutions
If you are looking for a developer who can own your product end-to-end, feel free to message me and discuss your project.
🌟 𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞:
SaaS Development, MVP Development, Full-Stack Web App Development, Mobile App Development, Cross-Platform App Development, Startup Product Development, Product Architecture & Planning, Proof of Concept (PoC) Development, AI-Powered Feature Development, API Development & Integration, Performance Optimization, Bug Fixing & Refactoring, Feature Enhancements, Codebase Cleanup & Modernization, Third-Party Integrations, Long-Term Maintenance & Support, Ongoing Feature Development
💻 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝 (𝐔𝐈, 𝐄𝐝𝐢𝐭𝐨𝐫𝐬 & 𝐏𝐫𝐞𝐯𝐢𝐞𝐰𝐬):
React.js, Next.js, Vue.js, Angular.js, TypeScript, Tailwind CSS, Server Components, App Router, Rich Text Editors, Responsive UI, Client-Side Rendering (CSR), Server-Side Rendering (SSR), Material UI, Ant Design, Chakra UI, Shadcn/ui
⚙️ 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 & 𝐀𝐏𝐈𝐬:
Node.js, Express.js, Nest.js, REST API Development, GraphQL APIs, API Design & Documentation, Third-Party API Integration, Authentication & Authorization, OAuth, JWT, Payment Gateway Integration (Stripe, PayPal), Webhooks, Microservices Architecture, Server-Side Logic, Business Logic Implementation, API Performance Optimization
🗄️ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞𝐬 & 𝐒𝐭𝐨𝐫𝐚𝐠𝐞:
PostgreSQL, MongoDB, Firebase (Auth, Firestore, Realtime DB), Supabase, Relational & NoSQL Databases, Database Schema Design, Data Modeling, Query Optimization, Indexing, Migrations, Data Security, Cloud Storage Integration
🧪 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐐𝐮𝐚𝐥𝐢𝐭𝐲:
Unit Testing, Integration Testing, End-to-End (E2E) Testing, Jest, Playwright, Cypress, API Testing, Regression Testing, CI/CD Pipeline Testing, Debugging & Issue Analysis
☁️ 𝐂𝐥𝐨𝐮𝐝 & 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭:
Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), Cloud Computing, Serverless Architecture, CI/CD Pipelines, Docker, Kubernetes, Cloud Security & Best Practices, Cloud Storage Integration, Environment Management, Version Control Workflows (Git/GitHub/GitLab), Performance Optimization, Web & Mobile App Deployment, Containerization & Orchestration, Staging & Production Deployments
🏗️ 𝐒𝐭𝐚𝐭𝐞 & 𝐀𝐩𝐩 𝐀𝐫𝐜𝐡𝐢𝐭𝐞𝐜𝐭𝐮𝐫𝐞:
Redux, Zustand, Jotai, MobX, React Query, Recoil, Vuex, NgRx, Context API, State Management Patterns, Micro-Frontend & Microservices Integration, Event-Driven Architecture, Performance Optimization, Code Maintainability, Reusable Component Libraries, Architectural Planning & Documentation, Design Patterns, Code Refactoring, CI/CD Architecture
$40/hr
100%
Job Success
$20K+ earned
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I manage a team that specializes in Software Innovations, Research and Development. We create innovative non-templated solutions which transform startup ideas into successful businesses.
What we can do for you:
- Custom software development for startups - our dedicated team provides you with a custom solution that suits your technical and business needs the most. As a result of our collaboration you get a fully-functional web/mobile/desktop product, from design to deployment, as well as post-production support;
- AI software and apps - having profound expertise in AI/ML development we create solutions that are aimed to support your business and keep it on top of technological progress;
- AR/VR design and development - we build Augmented reality and Virtual reality applications which improve operational effectiveness, reduce training time, and thus can empower your processes and open new business opportunities;
- Data Analysis and Analytic Dashboards - we provide bespoke digital solutions for data analysis, visualization and building customizable reports, which are geared to your business operations and tailored to your existing methods of data collection. No matter how many data types you have, you get them connected into one source to facilitate data-driven business decisions.
Our expertise:
- Mobile development (native iOS/Android development, cross-platform development)
- Web development
- Desktop development (Windows OS desktop software)
- Design (UI\UX)
- AI/ML development
- AR/VR development
Our competency includes:
- .Net
- Java
- Front-end (Angular)
- Android
- iOS
Domains we work with:
- education
- GIS
- sports
- public services
- healthcare
- public utilities
Associated with
Corsac Technologies Corporation
$10K+
earned
$35/hr
100%
Job Success
Available now
Offers consultations
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I'm a Data Scientist and Software Engineer based in Rome, Italy, with 10+ years of experience shipping cross-platform apps and integrating real machine learning into them. I hold an MSc in Data Science from Sapienza University of Rome, with published research on arXiv:2208.10993.
What makes me useful to founders and product teams: I cover the full stack with AI layer (LLM integration, RAG pipelines, on-device ML, computer vision) through to the mobile or web product it lives inside. That means I can meet you wherever you are, whether you need help thinking through the AI architecture, building the app around it, or both. Fewer handoffs, faster iteration, and someone who stays accountable for the whole thing working in production.
🔹 Selected Projects
✔ Fitabase — Garmin Health SDK integration in .NET MAUI
Built the first .NET MAUI binding for the Garmin Health SDK from scratch. No prior bindings existed — I wrote the native iOS and Android bridges, exposed them through a clean MAUI API, and shipped it into Fitabase Engage, a platform used by health researchers to collect data from thousands of wearable devices. This is visible on my Upwork review history.
✔ PoolExpert (Zepto Internet Solutions, Canada) — Xamarin.Forms → .NET MAUI migration
Migrated a production mobile app with 100,000+ users from Xamarin.Forms to .NET MAUI without service interruption. Audited every page, identified the right MAUI controls based on performance profiling, and rebuilt the architecture for faster load times and smoother UI. Ongoing engagement — the client kept me on after migration for active feature development.
✔ Xplor Platform (UK heritage organization, via DataDuopoly)
Senior Engineer and Technical Lead on a commissioned platform for a major UK heritage organization. Owned the migration of a legacy system and led the design of a footfall prediction algorithm to help operations plan visitor capacity across sites. Delivered and deployed to production.
✔ Pryzebox (Vivomi Inc.) — 2-year multi-platform engagement
Built and maintained an entire e-commerce stack: a Shopify-embedded app, mobile apps (Xamarin iOS/Android), a .NET Core + Entity Framework web admin panel, and the supporting REST APIs. One engineer, four surfaces, shipped and maintained over two years.
✔AILEVEN — Italian fantasy football platform
Full stack build: mobile app, backend, and admin panel — all in C# and .NET. Currently planning the .NET MAUI migration with the founder.
✔ 12-Lead ECG Arrhythmia Detection (MSc research, Sapienza)
Built a Flutter app running custom-trained deep learning models (TensorFlow Lite) for on-device ECG arrhythmia classification. Trained and compared multiple model architectures for my thesis. Published research on arXiv. Demonstrates genuine applied ML depth, not just API integration.
✔ RAG-Powered Book Summary Platform (Claude API + Google Workspace)
Designed and built a Retrieval-Augmented Generation pipeline that produces long-form book summaries users can publish and share. Built for a fraction of the cost of off-the-shelf alternatives by architecting smart chunking, caching, and context management. Launching to production soon.
🔹 How I can help you
If you're an AI-first founder building an MVP — I'll architect and ship it end-to-end: the AI layer (RAG, agents, LLM features), the product it lives in (mobile or web), and the infrastructure under it. You get one senior owner, not a team of handoffs.
If you're an enterprise mobile team — I lead complex .NET MAUI and Flutter builds, with specific depth in migrations from Xamarin, integrating SDKs that don't have bindings yet, and layering AI features into existing apps.
If you're an agency — I take on senior technical engagements as a subcontractor where AI and mobile skills both need to be real. References available.
🔹 Tech Stack
AI & ML: Python, TensorFlow, PyTorch, scikit-learn, LangChain, Claude API, OpenAI API, Gemini, RAG architectures, vector databases, TensorFlow Lite, NCNN, on-device inference
Mobile: .NET MAUI, Flutter, Xamarin.Forms, Xamarin Native (iOS/Android)
Backend: .NET Core, C#, Entity Framework, Python/FastAPI, Node.js, REST APIs, microservices
Cloud & DevOps: AWS, Azure, GCP, Docker, Kubernetes, GitHub Actions, Azure DevOps, CI/CD
🔹 How I work
Clear weekly updates. Honest estimates, including when things will take longer than I hoped. Code that another engineer can take over without a month of onboarding. I'm in CET and overlap comfortably with US East Coast and UK hours.
I don't take $500 projects, "build me ChatGPT in a week" briefs, or work I can't do well. If your project isn't a fit, I'll tell you and point you to someone better.
Send me a message with a few lines about what you're building and the problem you're trying to solve. I reply within 24 hours with an honest read on whether I'm the right person — and if I'm not, I'll say so.
Hafiz Muhammad H.
has worked
.
$30/hr
100%
Job Success
$40K+ earned
Available now
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With a rich 15+ years background in crafting enterprise and SaaS solutions using .Net/C#, encompassing all essential elements like web applications, backend APIs, and database layers, my expertise is comprehensive and deep-rooted. My proficiency extends to over a decade in cross-platform mobile app development, where I excel in creating immersive user experiences and high-quality mobile applications. My portfolio boasts a diverse array of stunning, feature-loaded apps tailored for various clients.
My services are not just limited to app development; I play an integral role in enhancing user experience and interface designs for my clients. When you entrust your project to me, you're assured of a smooth, efficient development cycle. Expect regular updates and strategic insights from me, ensuring that your app realizes its utmost potential. I pride myself on being an authority in .Net MAUI and Xamarin, a testament to my extensive experience.
I welcome your project requirements and am ready to take on the development process with skill and confidence.
My areas of expertise include:
.Net MAUI, .Net, .Net Core
Xamarin, Xamarin Forms, Xamarin Android, Xamarin iOS
MSSQL, DBMS
C#, WPF, WCF
Web API, Desktop Application, MacOS Applications
Android, iOS development
Azure Cloud, Azure Web Services
MicroServices, Continuous Integration
Unit Testing, Git, Azure DevOps
CI/CD Pipelines, Schema Design, Project Architecture
Why choose my services?
Flexible working hours
Proactive and clear communication
Daily progress updates
$50/hr
100%
Job Success
Available now
Offers consultations
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I am a Core PHP/JS developer specializing in WordPress, WooCommerce, and LMS/membership platforms. 14+ years building custom solutions for online businesses.
I am a certified development partner with Paid Memberships Pro, MemberPress, LearnDash, and LifterLMS. I have published 15+ plugins on the official WordPress plugin directory, including a full Discord integration suite that works across PMPro, MemberPress, LearnDash, Tutor LMS, LifterLMS, and more.
What I actually do:
Custom plugin development. Not page builders, not theme customizer hacks. I build through custom plugins and child themes so your site stays upgrade-safe and does not break on the next WordPress update.
Migrations. I have moved large WooCommerce sites off WCFM to WC Vendors (18,000+ products, 300,000+ orders, 1,000+ vendors, with commission recalculation built in), migrated subscription systems to Paid Memberships Pro, and rebuilt custom CMS platforms into WordPress from scratch.
Membership and LMS builds. I have built 1,500+ custom PMPro membership sites and worked deep in LearnDash, LifterLMS, and MemberPress at an architectural level, not just plugin setup.
WooCommerce extensibility. Multivendor marketplaces, custom booking systems with complex logic (parent-child booking cascades), and WooCommerce builds that hold up under real transaction volume.
Landing page design and optimization. I build and optimize landing pages and sales funnels focused on conversion, not just looks. This includes funnel building, Google Analytics setup and tracking, and ongoing web design and optimization work based on real user data.
How I work: Agile with weekly demos. Git for everything. PHPCS and ESLint for code standards. PHPUnit, Mockery, and WP_Mock for testing. Staging first, always.
I work with agencies who need a reliable technical partner and with businesses who want to own their project end to end. If that is what you are looking for, let's talk.
💬 Client Reviews:
⭐️⭐️⭐️⭐️⭐️
❝Sunny delivered a clean WordPress (aligned to a figma mockup) and LearnDash setup and was responsive to feedback throughout the project. Included custom coding for a dynamic webpage that i'm happy with. Overall a great experience and happy i'm pleased with the final result!❞
—Anthony Nguyen
⭐️⭐️⭐️⭐️⭐️❝Sunny successfully completed our project in Learndash/WordPress. He was great to work with and he was able to accommodate multiple requirements. He'll be our first choice for future dev work.❞
—Alberto (Westhero Llc)
⭐️⭐️⭐️⭐️⭐️
❝Sunny has been an absolute pleasure to work with. He’s reliable, proactive, and consistently delivers high-quality work. His communication is clear, timely, and professional, and he always goes the extra mile to make sure everything runs smoothly. We’ve been very impressed with his dedication❞
— Daniela(MoonRock)
$10/hr
97%
Job Success
$20K+ earned
Available now
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𝗣𝗿𝗼𝘃𝗲𝗻 𝘁𝗿𝗮𝗰𝗸 𝗿𝗲𝗰𝗼𝗿𝗱: 25+ production-ready apps built with Flutter & Firebase, published 14+ Native Android Apps, generating over 8 figures in revenue
𝗘𝘅𝗽𝗲𝗿𝘁 𝗱𝗲𝗹𝗶𝘃𝗲𝗿𝘆: CI/CD automation, clean architecture, and reliable app store publishing
𝗘𝘅𝘁𝗿𝗲𝗺𝗲𝗹𝘆 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲, 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝘃𝗲 𝗮𝗻𝗱 𝗙𝗮𝘀𝘁: Regular updates, clear milestones, and proactive collaboration
𝗘𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝘀𝘂𝗽𝗽𝗼𝗿𝘁: From Figma design to post-launch maintenance • Reliable support after launch
I've had the privilege of propelling clients to significant milestones, including 2 production mobile apps with real users and measurable business impact.
Some notable successes include:
- A restaurant management app helping streamline dining operations and enhance customer engagement through a seamless mobile experience
- A ride-sharing app supporting driver, customer workflows and transportation operations with a reliable, user-friendly mobile platform
I’m a Flutter & Android (Kotlin) developer with 𝟳+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗽𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 delivering production-ready mobile apps. AI speed combined to deliver code that ships fast, feels premium, and scales without cracking. (Available for 2 projects in July 2026)
• End-to-End Expertise: Flutter (iOS & Android) and native Android (Kotlin) development - from UI/UX design (Figma-to-code) to back-end integration and deployment.
• Modern Architecture: Implement MVVM/Clean Architecture and Jetpack Compose for maintainable, scalable code, integrate Firebase, REST/GraphQL APIs, payment gateways (Stripe/PayPal) and 3rd-party SDKs.
My core expertise:
• Flutter App Development (Android & iOS)
• Native Android development using Kotlin
• MVP Development for Startups
• AI-Powered Mobile Applications
• Firebase Integration (Authentication, Firestore, Realtime Database, Cloud Messaging (FCM), Crashlytics, Remote Config, Cloud Storage )
• REST API & Third-Party SDK Integration (GraphQL, Node.js, Firebase Cloud Functions, Supabase, WebSockets, Twilio)
• Payment Gateway Integration (Stripe, Razorpay, PayPal, Google Play Billing, Apple In-App Purchase, RevenueCat)
• Maps, Geolocation & Real-Time Tracking (Google Maps SDK, geolocation, geofencing, live tracking, route optimization )
• Chat, Notifications & Real-Time Features
• Figma to Flutter / Android
• Google Play Store & Apple App Store Deployment
I'm a mobile app developer who builds full apps from scratch in both Flutter and native Android (Kotlin), extends existing Flutter apps with custom native Kotlin modules when a plugin falls short, and has particular depth in two-sided marketplace apps, platforms connecting two different types of users (clients/professionals, hosts/guests, buyers/sellers) with booking, messaging, and payments built to work cleanly for both sides.
Tech Stack:
Flutter • Dart • Kotlin • Firebase • Supabase • REST APIs • SQLite • Room Database • Stripe • Google Maps • Push Notifications • Riverpod • BLoC • GetX • Jetpack Compose • Kotlin Coroutines & Flow • Hilt/Dagger • Android SDK • Git • GitHub • Figma
Message me "AUDIT" - get a free 30-min technical consultation.
During our session, we’ll:
✅ Explore your goals, technical requirements, or existing app review feedback
✅ Outline a roadmap with timelines and cost estimates
✅ Recommend the best tech stack and development approach
🤝 𝗟𝗘𝗧'𝗦 𝗪𝗢𝗥𝗞 𝗧𝗢𝗚𝗘𝗧𝗛𝗘𝗥
Associated with
Bitrix Infotech Pvt Ltd
$600K+
earned
$70/hr
100%
Job Success
$100K+ earned
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✦ IT Consultant ✦ Product Development ✦ Software Development ✦ Full Stack Development ✦ Prompt Engineering ✦ Project Management ✦17+ Years Exp
❖ Engagement with DMRC (Feb 2021 - Present) Spearheading cutting-edge engagement strategies at DMRC, driving innovative solutions in alignment with company objectives. Collaborating seamlessly with cross-functional teams to define and execute strategies that enhance business operations and productivity.
❖ Leading UI architecture development, ensuring visually appealing and user-friendly interfaces. Collaborating closely with the DMRC team to translate business requirements into effective solutions. Leveraging expertise in ASP.NET MVC 4, jQuery, C#, HTML, CSS, and JavaScript to drive project success.
❖ Upwork Engagements (Oct 2015 - Present): Serving a diverse range of clients on Upwork, delivering top-tier solutions. Skillfully handling ASP.NET and Azure deployment projects, demonstrating proficiency in diverse technologies.
❖ Garnering stellar client feedback on Upwork, reflecting exceptional performance and dedication to meeting diverse project requirements. Demonstrating prowess as a problem solver by providing rapid and professional solutions to complex technical challenges. Earning a reputation for excellence in communication and exceeding client expectations across diverse projects and domains.
❖ JF Software (Nov 2021 - Jan 2023): Excelled in technically challenging projects, demonstrating agility in evolving requirements. Led the charge in working with advanced technologies, including GraphQL, Azure Functions, Cosmos DB, and Azure DevOps. Delivered impeccable C# code and collaborated effectively with cross-functional teams, contributing insights during stand-ups, sprint planning, and other key meetings.
❖ LetsBrief Journey (Oct 2015 - Nov 2019) Project Title: Innovative Customer Engagement Platform: Led the development of a groundbreaking customer engagement platform, spanning mobile and desktop, while designing user-friendly UI frameworks.
𝐏𝐫𝐢𝐦𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬
ASP.Net MVC, ASP.Net, C#, CSS, HTML, Ajax, Azure, React.js, JavaScript, jQuery, ChatGPT, Cognitive Search, Prompt Engineering,
𝐒𝐞𝐜𝐨𝐧𝐝𝐚𝐫𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭𝐬
SQL Server, Jenkins, Fortify (SAST), terraform, Vue.js, Rethink DB, LINQ, LINQ to SQL, Entity Framework, WCF, node.js, socket.io, ES6, CI/CD, Terraform, AWS, Infrastructure automation, DevOps, Shapespark
𝐀𝐥𝐬𝐨 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡
JSON, SQL Server, Azure (Azure Web App, Azure VM, Azure Blob, Azure Notification Hub, Azure Web Jobs, Azure CDN, azure Ubuntu VM etc.), Android studio, Firebase Cloud Messaging, Web Components, notification API, Facebook Graph Api, worker role, LESS, Responsive Design, Phone gap/Cordova, Phone gap Build, Gulp, Browserify, Framework7, Raven DB, Pop3 & IMAP integration