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$35/hr
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$70K+ earned
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**************TOP RATED**************
I, Tapesh Bhargava, owner of the “Alphonic Network Solutions” am here to design and develop the unique concept/idea driven by the clients with an excellent coding level with the help of most understanding coordinators and testers to assure quality with meticulous approach to work.
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***One warning – If you are looking for cheap & average work, I can’t help you.***
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**Team Skills – Here is what we specialize in -
1. Critical Thinking heads and skilled in maintaining proper Requirement Specification Document.
2. Effective communication skills, Splendid time management skills and creative positive attitude.
3. Basic acknowledgment about different tools and software like Photoshop, illustrator, Adobe XD, Figma and other wire framing tools.
4. Being updated with all latest technologies and web trends.
5. Proficiency in cross platform solutions, android and Ios programming knowledge.
6. Efficiency in API, Android SDK, Android studio, Ios platform, and skills in php, SQL, Flutter Development.
7. Ecommerce Website / OS Commerce / Portal Development, Online Forms & Database Integration, 2D and 3D Game for Android and Iphone
8. Familiar with Git hub.
9. Knowing the basics of SEO and efficiency in Web hosting including domain, sub domain, URL and genera FTP knowledge.
10. A creative mindset of QA and the ability to approach a problem creatively.
11. Ability to use logic and reasoning to identify the strengths and weaknesses of IT systems.
12. Acknowledgment about Libraries and Web frameworks.
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**Tech Stack –
1. MEAN Stack – Mongo DB, Express JS, Angular, Node JS
2. Full Stack - Php,
3. Native App - Java, Kotlin, Swift.
4. Flutter – Dart
5. HTML, CSS, Bootstrap, Java script, J Query
“If the skills and technology mentioned above sound interesting, then contact me and we’ll set up a time to talk about your project and goals!”
**Additional information available at my company’s website Alphonic.in
Associated with
Alphonic Network Solutions Pvt Ltd
$20K+
earned
$15/hr
100%
Job Success
$30K+ earned
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Transforming Complex Business Requirements into Scalable Digital Ecosystems
With over 13 years of industry leadership, I don’t just write code; I architect high-performance, secure, and scalable digital ecosystems. Whether you are a startup building an MVP or an enterprise migrating to microservices, I bring a dual mastery of battle-tested PHP frameworks and modern JavaScript stacks.
🚀 Why Partner With Me?
- Architectural Excellence: 13+ years of experience across the entire SDLC, from database schema design (Postgres/Mongo) to serverless deployment (AWS Lambda/Docker).
- Versatile Tech Stack: Expert-level proficiency in MERN and MEAN stacks alongside PHP (Laravel and CodeIgniter).
- Automation Specialist: I have integrated over 35 APIs and automated complex workflows using Zapier, Integromat, and HubSpot to save businesses hundreds of manual hours.
🛠 Core Technical Competencies
Front-End Mastery:
- React, Next, Angular (Universal and Material), Vue
- Mobile: React Native, Flutter, Dart
- UI/UX: Tailwind CSS, Bootstrap, D3 (Data Visualization)
Back-End & API Architecture:
- Node (Express, Nest), Python (Django, Flask), PHP (Laravel, CodeIgniter, Yii)
- CMS: Strapi, WordPress Plugin Development
- API: RESTful, GraphQL (Apollo), WebSockets (Socket)
- Security: OAuth, JWT, XSS/SQL Injection prevention, WCAG compliance
DevOps & Cloud Infrastructure:
- AWS Expert: EC2, Lambda (Serverless), S3, RDS, SNS, SQS, CloudFront, DynamoDB
- Containerization: Docker, Vagrant
- CI/CD: GitHub Actions, Bitbucket Pipelines
Database & Cache:
- PostgreSQL, MySQL, MongoDB, Firebase, Redis, Elasticsearch
💼 Specialized Services
SaaS & MVP Development: Fast-tracking ideas into scalable products.
- Third-Party Integrations: Twilio, Google Maps, YouTube API, Stripe, Onespan.
- CRM & Marketing Automation: Integrating HubSpot, Ontraport, and Sendinblue via Webhooks and CronJobs.
- Maintenance & Migration: Modernizing legacy PHP codebases into React and Node environments.
📈 My Workflow
1. Requirement Analysis: Deep dive into your business goals.
2. Agile Development: Weekly sprints with transparent updates via Jira.
3. Rigorous Testing: Unit and E2E testing using Jest, Mocha, and Chai.
4. Deployment & Handover: Seamless launch on AWS, Heroku, or Digital Ocean.
Let’s build something impressive. Click the "Invite" button to discuss how my 13 years of experience can solve your technical challenges.
Associated with
MSP IT Concepts Pvt. Ltd.
$100K+
earned
$70/hr
100%
Job Success
$30K+ earned
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With more than a decade of experience spanning various time zones, I am an accomplished developer proficient in both web and mobile development. My expertise lies in creating web applications and developing hybrid or native mobile apps for a range of platforms. I have honed my skills in building websites, and online marketplaces catering to both business-to-business (B2B) and business-to-consumer (B2C) sectors, as well as designing highly effective landing pages that generate significant conversions.
Frontend Technologies:
✅React: Gatsby, Redux Thunk, Redux-saga, Context, Jumpsuit, Rematch, Recompose, Mobx, Styled Component, Apollo GraphQL, DVA, Next.js, Storybook, ReactXP, Ant Design
✅Angular: all Versions, AngularDart, Ngrx
✅UI Frameworks/Libraries : Tailwind, Bootstrap, Semantic UI, Material UI
Backend Technologies :
✅PHP
✅Node
✅ASP.Net
✅Laravel
CMS:
✅Shopify
✅Wordpress/Woocommerce
✅Wordpress Themes/Custom Development
✅Wix
✅Squarespace
✅Webflow
Databases:
✅MySql
✅SQLite
✅PostgreSQL
✅NoSQL
✅MongoDB
Native Apps:
✅Swift
✅Java
Hybrid Apps:
✅React Native
✅Flutter
Scrum / Agile Environments:
✅Github
✅Bitbucket
✅Gitlab
✅Jira
✅Trello
✅Slack
Let's connect for more information about my skills and if you have other queries. Thanks
Associated with
NSTACH
$2K+
earned
$15/hr
100%
Job Success
$200K+ earned
Available now
Offers consultations
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🏆 Top 1% Talent on Upwork - Top Rated Plus
🎯 Best aligned with revenue-focused startups
📈 High-performance SaaS & subscription products built to scale
Mobile App Developer Skills & Expertise:
✅ Flutter Development (FlutterFlow, Dart)
✅ React Native Development
✅ Custom Mobile App Development
✅ eCommerce Mobile Apps
✅ Social Networking Apps
✅ AI Integration & AI Apps
✅ Cross-Platform Mobile Apps
✅ UI/UX Design
✅ Firebase Integration
✅ REST API Development
✅ Database Design & Development
✅ Photo Editing & Sharing Apps
✅ Crypto Apps
✅ Mobile App Promotion & Design
✅ Web to App Conversion
✅ Native iOS & Android Development
✅ App Development Consulting
✅ App Icon Design
✅ Advanced Tracking Features
✅ AI Chatbots
✅ Mobile App Optimization
✅ AdMob Integration
✅ Push Notifications
✅ In-App Purchases
✅ Offline Sync
✅ Augmented Reality (AR)
✅ Mobile Security
✅ Performance Optimization
✅ Location-Based Services
✅ Wearable Integration
✅ Voice Recognition
✅ Multilingual Support
✅ Frontend Technologies: HTML5, CSS, JavaScript (ES6), TypeScript
✅ Backend Technologies: Node.js, Express.js, MongoDB, SQL
✅ Frameworks & Libraries: Redux, Angular, Vue.js
✅ DevOps & Deployment: Docker, CI/CD, Jenkins
Web Developer Skills & Expertise:
✅ Full Stack Web Development
✅ MERN Stack (MongoDB, Express.js, React.js, Node.js)
✅ MEAN Stack (MongoDB, Express.js, Angular, Node.js)
✅ Frontend Development: HTML5, CSS, JavaScript, TypeScript, React, Angular, Vue.js
✅ Backend Development: Node.js, Express.js, PHP, Python, Django, Flask
✅ Database Management: MongoDB, SQL, PostgreSQL
✅ Frameworks & Libraries: Redux, Bootstrap, Material UI, Next.js, Nuxt.js
✅ DevOps: Docker, CI/CD, Jenkins
✅ API Development: RESTful APIs, GraphQL
✅ CMS: WordPress, WooCommerce, Shopify
✅ SEO: Search Engine Optimization
✅ UI/UX Design: Figma, Adobe XD, PSD
✅ Blockchain Development
✅ E-commerce Solutions
✅ Responsive Web Design
✅ Web Performance Optimization
Industries & App Ideas:
🌟 Healthcare: Patient management systems, telemedicine apps, fitness tracking apps
🌟 Finance: Mobile banking apps, investment tracking apps, expense management tools
🌟 Travel & Tourism: Booking systems, travel itinerary apps, local guide apps
🌟 Retail & eCommerce: Online stores, inventory management apps, loyalty programs
🌟 Education: E-learning platforms, student management systems, online course apps
🌟 Real Estate: Property listing apps, virtual tour apps, rental management tools
🌟 Entertainment: Streaming services, gaming apps, event booking apps
🌟 Food & Beverage: Restaurant ordering systems, food delivery apps, recipe sharing apps
🌟 Transportation: Ride-hailing apps, logistics management systems, navigation tools
🌟 Social Networking: Social media apps, community building platforms, event management tools
Portfolio Highlights:
🔹 Ride-hailing & Delivery Apps: Custom solutions for local and international markets
🔹 eCommerce Platforms: Comprehensive online store setups with payment integrations
🔹 Social Networking Apps: Advanced messaging and community features
🔹 AI-Driven Mobile Applications: Intelligent solutions for various industries
🔹 Custom CRM and Business Management Tools: Tailored systems for client management and workflow optimization
🔹 Healthcare Apps: Telemedicine platforms and fitness trackers
🔹 Finance Apps: Banking and investment tracking solutions
🔹 Travel & Tourism Apps: Booking systems and itinerary planners
🔹 Education Platforms: E-learning and student management systems
🔹 Entertainment Apps: Streaming services and interactive gaming experiences
How to Start a Collaboration:
🌟 Review my profile to explore my skills and expertise.
🌟 Ensure my pricing aligns with your budget.
🌟 Reach out directly with a message or project invitation. For detailed discussions, I offer a complimentary consultation call.
Why Choose Me?
🌟 High-quality work with timely project delivery.
🌟 Self-starter who values honesty, versatility, and reliability.
🌟 Available for constant communication via multiple platforms.
🌟 Experience working with startups to large enterprises.
🌟 Strong, reliable internet connectivity for efficient collaboration.
I’m dedicated to delivering successful outcomes and am thankful for Upwork’s platform that has refined my skills and allowed me to serve clients better.
Thanks & Regards,
Muhammad Haseeb Shaukat
Associated with
TERABIT IT
$200K+
earned
$40/hr
100%
Job Success
$500K+ earned
Available now
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🤝 We believe in quality, professionalism, and good long-term business relationships. 🤝
🏆 Certified Shopify Developer | Shopify Plus Expert | Certified Prestashop Partner | Ecommerce Expert
Hi. My name is Pavlo Opanasiuk. I am an eCommerce expert (13+ years) and lead the certified Shopify and PrestaShop experts team - Polyany s.r.o.
Polyany facts and figures:
📌 We are an Ukrainian 🇺🇦 / Czech 🇨🇿 / American 🇺🇸 eCommerce web and mobile development company
📌 We are certified Shopify Partners and PrestaShop Experts
📌 Over 570 projects delivered to customers
📌 Our specialists have 13+ years of experience in eCommerce
📌 9 out of 10 clients recommend us
📌 4.9/5 Clutch Review Rating
📌 100% Job Success — Top Rated Plus agency on Upwork
🎯 Our clients reach their eCommerce potential based on transformations where online and digital are essential parts of a successful business. We create simple and complex B2C/B2B solutions, including powerful eCommerce sites, marketplaces, applications, etc, from A to Z. We provide long-term ongoing support of a product at our client's request.
📈 Some of our clients have seen their online revenue grow 3-6x in 2024 compared to past years.
We are professional web (JavaScript, Node.js, React.js, Vue.js, Next.js, Remix, PHP, Laravel, Symfony, PostgreSQL, MySQL, etc.), and mobile (Flutter, Dart) developers, UI/UX designers, QA specialists, etc.
🧩 Our company specializes in custom product configurator development that enhances the online shopping experience. This solution is designed to integrate seamlessly into the eCommerce platform, allowing your customers to modify products directly on your website.
From Printing to Jewelry, our configurators streamline the customization process, helping companies improve customer engagement, reduce order processing times, and increase overall sales.
Also, my team and I, as Shopify Developer or PrestaShop Developer, provide a wide range of other services to our clients:
✓ Creating B2C or B2B online stores and marketplaces from scratch (for furniture, automotive, fashion, jewelry, babies, food, computer hardware, sport, animals' and pets' goods, etc.);
✓ Developing web products (applications, plugins, extensions) for e-commerce business;
✓ Developing web cross-platform products (applications, plugins, extensions) based on Shopify, Prestashop, Magento 1, Magento 2, WP/WooCommerce, etc. for product companies;
✓ Developing mobile cross-platform applications (iOS and Android);
✓ Making a complex eCommerce site audit;
✓ Making a store’s performance optimization;
✓ Performing search engine optimization (SEO);
✓ Building and realising a marketing strategy focusing on a separate market and target audience;
✓ Providing ongoing support for websites, web, and mobile applications
We provide full-services support for our clients on their eCommerce sites when they need to convert design layouts in Figma to a custom store’s theme; upgrade a site's CMS version; resolve issues/errors in a store’s configuration and functionality; configure servers (Ubuntu-PHP-Apache-MySQL, etc); configure primary and additional store features (like payment gateways, price calculation, multistore, etc); manage/import/export customers, products, and order catalogs, etc.
🗣️ What do our clients say about my team and me as a Shopify Developer or PrestaShop Developer?
"For several years, I've been working with Pavlo and his agency, Polyany. Their availability and cost-to-quality relation have been impressive. Very professional and reliable, have a fast response time, do excellent work and are very solution-oriented. I can absolutely recommend Pavlo and his Team!" - René Eisenhut, Switzerland 🇨🇭
❗We are proud that our clients stay with us for the long term and recommend us to others.
If you need a Shopify Developer, Shopify Plus Expert, or PrestaShop Developer (from 1.4 to 8.2.1 versions), don't hesitate to ask us for support. We would be happy to be useful to you.
If you need to see examples of my teamwork, please visit our portfolio to take a look at the work we have recently completed.
If you have any questions, please feel free to ask me.
I will be glad to answer any questions you have.
E-commerce web development is my professional life.
I work 5-6 days a week 8-10 hours a day.
Associated with
Polyany s.r.o.
$1M+
earned
$35/hr
100%
Job Success
$500K+ earned
Available now
Start of list.
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Full Stack Developer and technical partner with 10+ years of experience building SaaS platforms, cloud applications, and complex digital products from idea to production.
⭐ 5.0 client feedback
🏆 100+ successful client partnerships
🤖 AI-enhanced engineering with Claude and modern AI tools
🚀 Founder & CEO of Softonix
I work with startups, scale-ups, and established businesses that need more than a developer who simply completes tickets.
Need one senior technical partner? I can work hands-on. Need more firepower? I can bring in the right engineers from my team while staying directly involved in your project.
I help take products from an idea, prototype, or legacy system to a production-ready solution, covering technical planning, architecture, frontend, backend, cloud, integrations, QA, deployment, and ongoing development.
⚡ WHAT SETS ME APART
→ From idea to production
I look beyond individual tickets and focus on the product, users, workflows, and business goals behind the code.
Before development starts, I help clarify the technical approach, key workflows, risks, and feature priorities so engineering time goes where it creates the most value.
→ AI-enhanced development
I actively use Claude and modern AI engineering tools to accelerate code analysis, implementation, rapid prototyping, and repetitive development work.
The result is faster execution combined with senior technical judgment around architecture, code quality, security, and long-term maintainability.
→ End-to-end technical ownership
Discovery → Architecture → Frontend → Backend → APIs → Cloud → QA → Deployment → Maintenance
Whether we're launching a new SaaS product or modernizing an existing platform, I focus on building software that is ready for real users and future growth.
🛠 CORE EXPERTISE
Frontend: React.js, Next.js, Vue.js, Nuxt, Angular, TypeScript, JavaScript, Tailwind CSS
Backend: Node.js, .NET, ASP.NET Core, REST APIs, microservices
Cloud & architecture: AWS, Azure, cloud-native applications, SaaS architecture, scalable systems, third-party integrations
Mobile: Flutter, React Native, cross-platform mobile applications
AI engineering: Claude, LLM integrations, AI APIs, AI-assisted development workflows, AI-enabled SaaS products
My hands-on and team experience spans SaaS, analytics, HRTech, marketplaces, AdTech, automotive software, FinTech, e-commerce, and mobile products.
🤝 SOLO WHEN IT FITS. TEAM WHEN IT SCALES.
As the Founder & CEO of Softonix, I've helped 100+ clients navigate complex technical challenges while balancing delivery speed, product quality, and development costs.
Depending on the project, I can work hands-on or bring in the right engineers from my team while staying directly involved in the technical direction and delivery.
You get direct communication and senior technical involvement, with access to experienced frontend, backend, Flutter, React Native, QA, and cloud engineers when the project needs more capacity or specialized expertise.
Softonix is your engineering team when you don't have one, and your extra firepower when you do ⚡
Send me an invite and let’s get started!
Associated with
Softonix
$1M+
earned
$18/hr
100%
Job Success
$30K+ earned
Offers consultations
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𝗬𝗼𝘂 𝗱𝗼𝗻'𝘁 𝗻𝗲𝗲𝗱 𝗮𝗻 𝗔𝗜 𝗳𝗲𝗮𝘁𝘂𝗿𝗲 𝗶𝗻 𝘆𝗼𝘂𝗿 𝘀𝗮𝗮𝘀. 𝗬𝗼𝘂 𝗻𝗲𝗲𝗱 𝗔𝗜 𝘁𝗵𝗮𝘁 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝘄𝗼𝗿𝗸𝘀 𝗶𝗻𝘀𝗶𝗱𝗲 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗱𝘂𝗰𝘁 — 𝗻𝗼𝘁 𝗮 𝗖𝗹𝗮𝘂𝗱𝗲 𝗯𝘂𝘁𝘁𝗼𝗻 𝘀𝗹𝗮𝗽𝗽𝗲𝗱 𝗼𝗻𝘁𝗼 𝗮 𝗰𝗿𝘂𝗱 𝗮𝗽𝗽.
I've 𝐬𝐡𝐢𝐩𝐩𝐞𝐝 AI into 𝐩𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧: 𝐑𝐀𝐆 pipelines that search your own data, 𝐕𝐀𝐏𝐈 voice agents that handle calls, and 𝐧𝟖𝐧 workflows that connect your SaaS to the rest of your business stack. I built 𝐖𝐚𝐭𝐬𝐢𝐨 — a fully AI-powered WhatsApp CRM — 𝐦𝐮𝐥𝐭𝐢-𝐭𝐞𝐧𝐚𝐧𝐭, 𝐒𝐭𝐫𝐢𝐩𝐞-billed, serving real users. That's the kind of project I take on.
🚀 𝗪𝗵𝗮𝘁 𝗜 𝗯𝘂𝗶𝗹𝗱
𝗔𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 𝗶𝗻 𝗟𝗮𝗿𝗮𝘃𝗲𝗹
OpenAI, Claude, Groq, Deepseek — prompt pipelines, fine-tuned workflows
RAG: document ingestion, vector search, context-aware responses
VAPI voice AI for conversational interfaces
AI agents that take real actions inside your app
𝗡8𝗡 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻
Replace Zapier with self-hosted, logic-rich workflows
Trigger events from Laravel → external APIs → back into your DB
Onboarding flows, billing events, CRM syncs, notification chains
𝗦𝗮𝗮𝗦 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲
Multi-tenant (single-DB and multi-DB) with subdomain isolation
Stripe Connect & Subscriptions from day one
FilamentPHP admin panels, real-time dashboards
𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱
Vue / React + Inertia.js SPAs or Nuxt 3 SSR
WebSockets via Laravel Reverb for live data
Tailwind UI — clean and fast
🌟 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝘀𝗮𝘆
❝Rabiul is an expert in his field... Delivered as promised, excellent team player.❞ — Manisha B.
❝We had him on a 3-month project... always responsive. Highly recommended.❞ — Seth F.
🤝 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱?
Message me with your project. I respond asap. If you want AI inside your SaaS — not just linked to it — that's exactly what I do.
🛠️ 𝗦𝘁𝗮𝗰𝗸: Laravel · Vue 3 · Nuxt 3 · Inertia.js · PostgreSQL · MySQL · OpenAI · Claude API · VAPI · n8n · Stripe · AWS · Docker · GitHub Actions · Ploi
Associated with
Beri Byte
$1K+
earned
$50/hr
100%
Job Success
$80K+ earned
Available now
Offers consultations
Start of list.
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With 5+ years of professional experience in software (website, front-end, back-end, web app) development with a diverse background spanning multiple industries and roles. Throughout my career, I've demonstrated proficiency in full-stack development, system integration, and project management. My diverse experiences have equipped me with a unique skill set to tackle complex challenges and deliver innovative solutions.
Technical Proficiencies:
Website Technologies: Shpoify, WordPress
Frontend Technologies: React, React Native, Flutter, HTML, CSS
Backend Technologies: Node.js, Nest.js, TypeScript, JavaScript, Express.js, AWS, MongoDB
Database Management: MySQL, PostgreSQL, JSON, Database Schema Design
Architectural Patterns: MVC, Event-Driven Architecture, Serverless Architecture, Clean Architecture, GraphQL
Mobile Development: iOS SDK, Swift, Objective C, Apple XCode, Android SDK, Kotlin, Java Android Studio
Mobile Libraries & APIs: Alamofire, SDWebImage, Cocoapods, SQLite, Core Data
Web Services & APIs: RESTful API development, Firebase Cloud Messaging, In-App Purchase Integration
Code Optimization: Performance tuning, Design patterns, Material Design, Custom UI Elements, Animation
Cloud Services: Firebase Analytics, Database, Storage, Hosting, Crash Reporting, AWS, DigitalOcean
Social Integrations: Facebook, Twitter, Google SDK
Additional Skills: Web Scraping, Image Processing, Deep Linking, Content Provider, BroadcastReceiver, Background Services
Tools: Git, Github, Bitbucket, Sketch, Photoshop
-----------------------------------------------------
Full Stack Development Expert, Front-end Developer, Back-end Developer, Web App Development, Mobile App Development, React, React.js, Node.js, Nest.js, Nuxt.js, Express.jsJavascript, Typescript, HTML, CSS, CSS3, PHP, Python, API Development, API Integration, RESTful API, Third-Party SDK Integration, Firebase, Firebase Firestore, Analytics, Crashlytics, Cloud Services, AWS, Amazon Web Services, Database Design, Database Management, Mobile App Development, Native App Development, Android Mobile App Development, iOS Mobile App Development, Cross-Platform Mobile App Development, Flutter Mobile App Development, Dart, Java, Kotlin, Swift, SwiftUI, ChatGPT API Integration, Web Development, Web Application, Website Redesign, Website Optimization, Database Development, OpenAI, Agile Software Development, Google Analytics, Google Cloud Platform, RESTful Architecture, Amazon DynamoDB, SQLite, MySQL, MongoDB, Realm Database, PostgreSQL, Firebase Realtime Database, Node.js Framework, Back-End Development, API, React, Front-End Development, Full-Stack Development
$35/hr
100%
Job Success
$100K+ earned
Available now
Start of list.
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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
$45/hr
100%
Job Success
$200K+ earned
Available now
Start of list.
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Experienced in cross-platform and native mobile app development, admin panels, dashboards, cloud, IoT solutions, web applications, and back-end (REST API, MQTT, etc)
I am a Team Lead of the CitrusDev team, a Ukrainian software development company with over 40+ mobile and web developers, designers, project managers, DevOps, and QA specialists onboard. This means that besides my programming skills, you always have access to a full-stack product design & and development team.
More about CitrusDev:
CitrusDev provides customized software solutions for IoT startups, SaaS companies, eCommerce stores, LMS, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open-source technologies and platforms to bring innovation in an agile fashion. Our team excels in Java, Kotlin, Swift, Flutter, React Native, PHP, Laravel, WordPress, React.js, and Vue.js.
With over 40+ people, CitrusDev has either empowered client teams or delivered end-to-end development projects for brands from the Internet of Things, consulting, eCommerce, marketing, or eLearning industries and is recognized as a Top IoT Developer in Ukraine by Clutch.
Mykhailo,
CitrusDev Team
Keywords: iOS, Android, Flutter, BLE, Bluetooth, Core Bluetooth, Dart, Swift, Java, Kotlin, ESP32, IoT development, Internet of Things, embedded systems, IoT solutions, IoT firmware, IoT cloud, MQTT, WebRTC,, ESP32, Raspberry Pi, nRF, Nordic Semiconductors, NB-IoT, LPWAN, LoRaWAN, Zigbee, IoT architecture, IoT security, sensor integration, IoT protocols, real-time data processing, wireless communication, smart devices, cloud integration, AWS IoT, Azure IoT, Google Cloud IoT, ThingsBoard, Node-RED, Kaa IoT, OpenHAB, Home Assistant, industrial IoT, IoT automation, remote monitoring, IoT gateways, AIoT, machine learning for IoT, data analytics, smart home, smart city, smart farm, smart agriculture, agritech, healthcare, smart industry, smart logistics, IoT dashboards, IoT consulting, device-to-cloud, IoT scalability, low-power IoT, IoT connectivity, mobile app development, IoT mobile apps, cross-platform IoT apps, Flutter, native Android, native iOS, NFC, GPS tracking, telematics, wearable technology, connected devices, smart sensors, IoT-enabled automation, PCB development, hardware design, circuit design, custom IoT hardware, IoT prototyping, embedded hardware development, IoT manufacturing, cloud-based IoT platforms, real-time IoT analytics, IoT data visualization, edge AI, fog computing, MQTT brokers, CoAP, LwM2M, IoT fleet management, thermal printers, barcode scanners, RFID, heart rate monitors, ECG sensors, temperature sensors, humidity sensors, gas sensors, motion sensors, accelerometers, gyroscopes, pressure sensors, environmental monitoring, smart wearables, industrial sensors, medical IoT devices, IoT-based tracking solutions
Mykhailo T.
has worked
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