๐๐จ๐จ๐ค๐ข๐ง๐ ๐๐จ๐ซ ๐๐ง ๐๐ฑ๐ฉ๐๐ซ๐ข๐๐ง๐๐๐ ๐๐ฎ๐ฅ๐ฅ ๐ฌ๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ, ๐๐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง ๐๐ฑ๐ฉ๐๐ซ๐ญ, ๐จ๐ซ ๐ง๐๐ง ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ ๐ฐ๐ก๐จ ๐๐๐ง ๐ญ๐ฎ๐ซ๐ง ๐ฆ๐๐ง๐ฎ๐๐ฅ, ๐ซ๐๐ฉ๐๐ญ๐ข๐ญ๐ข๐ฏ๐ ๐ฐ๐จ๐ซ๐ค ๐ข๐ง๐ญ๐จ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ ๐ญ๐ก๐๐ญ ๐ซ๐ฎ๐ง ๐จ๐ง ๐ญ๐ก๐๐ข๐ซ ๐จ๐ฐ๐ง? ๐๐จ๐ฎ'๐ซ๐ ๐ข๐ง ๐ญ๐ก๐ ๐ซ๐ข๐ ๐ก๐ญ ๐ฉ๐ฅ๐๐๐.
๐๐ฏ๐๐ซ ๐ญ๐ก๐ ๐ฉ๐๐ฌ๐ญ ๐+ ๐ฒ๐๐๐ซ๐ฌ, ๐'๐ฏ๐ ๐๐๐๐ง ๐ฐ๐จ๐ซ๐ค๐ข๐ง๐ ๐๐ฌ ๐ ๐๐ฎ๐ฅ๐ฅ ๐ฌ๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ ๐๐ง๐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง ๐๐ง๐ ๐ข๐ง๐๐๐ซ, ๐๐ฎ๐ข๐ฅ๐๐ข๐ง๐ ๐ฐ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง๐ฌ, ๐๐๐๐ค๐๐ง๐ ๐ฌ๐ฒ๐ฌ๐ญ๐๐ฆ๐ฌ, ๐๐ง๐ ๐๐ฎ๐ฌ๐ข๐ง๐๐ฌ๐ฌ ๐ฅ๐จ๐ ๐ข๐ ๐ญ๐ก๐๐ญ ๐ฌ๐๐๐ฅ๐๐ฌ. More recently, I've specialized in workflow automation and AI application development ๐ฎ๐ฌ๐ข๐ง๐ ๐ง๐๐ง, ๐๐๐ค๐, ๐๐๐ฉ๐ข๐๐ซ, ๐๐๐ง๐ ๐๐ก๐๐ข๐ง, ๐๐ง๐ ๐ญ๐ก๐ ๐๐ฉ๐๐ง๐๐ ๐๐๐. My experience includes building ๐๐ ๐๐ ๐๐ง๐ญ๐ฌ, ๐๐ ๐๐ก๐๐ญ๐๐จ๐ญ๐ฌ, ๐๐๐ (๐๐๐ญ๐ซ๐ข๐๐ฏ๐๐ฅ-๐๐ฎ๐ ๐ฆ๐๐ง๐ญ๐๐ ๐๐๐ง๐๐ซ๐๐ญ๐ข๐จ๐ง) systems trained on company data, CRM automation, lead-routing systems, and custom SaaS platforms that eliminate manual busywork.
๐ ๐ก๐๐ฅ๐ฉ ๐ฌ๐ญ๐๐ซ๐ญ๐ฎ๐ฉ๐ฌ ๐๐ง๐ ๐๐ฎ๐ฌ๐ข๐ง๐๐ฌ๐ฌ๐๐ฌ build workflow automation, AI applications, and full stack web platforms that are reliable, scalable, and built to save real time not just look good in a proposal. ๐๐ก๐๐ญ๐ก๐๐ซ ๐ฒ๐จ๐ฎ ๐ง๐๐๐ ๐ ๐๐ฎ๐ฌ๐ข๐ง๐๐ฌ๐ฌ ๐ฉ๐ซ๐จ๐๐๐ฌ๐ฌ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐๐, ๐ ๐ฐ๐๐ ๐๐ฉ๐ฉ๐ฅ๐ข๐๐๐ญ๐ข๐จ๐ง ๐๐ฎ๐ข๐ฅ๐ญ ๐๐ซ๐จ๐ฆ ๐ฌ๐๐ซ๐๐ญ๐๐ก, ๐๐ง ๐๐ ๐๐ก๐๐ญ๐๐จ๐ญ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐, ๐จ๐ซ ๐๐ ๐๐๐๐ญ๐ฎ๐ซ๐๐ฌ ๐๐๐๐๐ ๐ญ๐จ ๐ฒ๐จ๐ฎ๐ซ ๐๐ฑ๐ข๐ฌ๐ญ๐ข๐ง๐ ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ, ๐'๐ฅ๐ฅ ๐ก๐๐ฅ๐ฉ ๐ฒ๐จ๐ฎ ๐๐ข๐ง๐ ๐ญ๐ก๐ ๐ซ๐ข๐ ๐ก๐ญ ๐ฌ๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง ๐๐ง๐ ๐๐ฎ๐ข๐ฅ๐ ๐ข๐ญ ๐๐จ๐ซ๐ซ๐๐๐ญ๐ฅ๐ฒ ๐ญ๐ก๐ ๐๐ข๐ซ๐ฌ๐ญ ๐ญ๐ข๐ฆ๐.
๐๐ฌ ๐ ๐๐๐๐๐ญ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ, ๐๐๐ฑ๐ญ.๐ฃ๐ฌ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ, ๐๐ง๐ ๐๐จ๐๐.๐ฃ๐ฌ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ, ๐ฆ๐ฒ ๐ญ๐๐๐ก๐ง๐ข๐๐๐ฅ ๐๐ฑ๐ฉ๐๐ซ๐ข๐๐ง๐๐ ๐ฌ๐ฉ๐๐ง๐ฌ ๐๐ซ๐จ๐ง๐ญ๐๐ง๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ, ๐๐๐๐ค๐๐ง๐ ๐๐๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ, ๐๐๐๐ ๐๐ง๐ ๐๐ซ๐๐ฉ๐ก๐๐ ๐ข๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ, ๐ฐ๐จ๐ซ๐ค๐๐ฅ๐จ๐ฐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง, ๐๐ง๐ ๐๐ฅ๐จ๐๐ค๐๐ก๐๐ข๐ง ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ, ๐ข๐ง๐๐ฅ๐ฎ๐๐ข๐ง๐ ๐๐จ๐ฅ๐ข๐๐ข๐ญ๐ฒ ๐ฌ๐ฆ๐๐ซ๐ญ ๐๐จ๐ง๐ญ๐ซ๐๐๐ญ๐ฌ ๐๐ง๐ ๐๐๐๐ ๐ข๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ. ๐ ๐ฌ๐ฉ๐๐๐ข๐๐ฅ๐ข๐ณ๐ ๐ข๐ง ๐ญ๐ฎ๐ซ๐ง๐ข๐ง๐ ๐ ๐ฆ๐๐ง๐ฎ๐๐ฅ ๐ฉ๐ซ๐จ๐๐๐ฌ๐ฌ ๐จ๐ซ ๐ ๐ซ๐จ๐ฎ๐ ๐ก ๐ข๐๐๐ ๐ข๐ง๐ญ๐จ ๐ ๐๐๐ฌ๐ญ, ๐ฌ๐๐๐ฎ๐ซ๐, ๐๐ง๐ ๐๐๐ฌ๐ฒ-๐ญ๐จ-๐ฆ๐๐ข๐ง๐ญ๐๐ข๐ง ๐ฉ๐ซ๐จ๐๐ฎ๐๐ญ.
๐ ๐๐๐ฅ๐ข๐๐ฏ๐ ๐ฌ๐ฎ๐๐๐๐ฌ๐ฌ๐๐ฎ๐ฅ ๐ฉ๐ซ๐จ๐ฃ๐๐๐ญ๐ฌ ๐๐จ๐ฆ๐ ๐๐ซ๐จ๐ฆ ๐๐ฅ๐๐๐ซ ๐๐จ๐ฆ๐ฆ๐ฎ๐ง๐ข๐๐๐ญ๐ข๐จ๐ง, ๐ซ๐๐๐ฅ๐ข๐ฌ๐ญ๐ข๐ ๐ฉ๐ฅ๐๐ง๐ง๐ข๐ง๐ , ๐๐ง๐ ๐ฐ๐ซ๐ข๐ญ๐ข๐ง๐ ๐๐ฅ๐๐๐ง, ๐ฆ๐๐ข๐ง๐ญ๐๐ข๐ง๐๐๐ฅ๐ ๐๐จ๐๐. You will always know exactly where your project stands, and I focus on solving your actual business problem, not just delivering features.
๐๐๐๐ก ๐๐ญ๐๐๐ค:
๐ ๐ซ๐จ๐ง๐ญ๐๐ง๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ: React.js, Next.js, JavaScript (ES6+), TypeScript, HTML5, CSS3, Tailwind CSS, Redux, Storybook
๐๐๐๐ค๐๐ง๐ ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ:Node.js, Express.js, Python, REST API development, GraphQL, JWT/OAuth authentication, Webhooks
๐๐๐ญ๐๐๐๐ฌ๐๐ฌ: PostgreSQL, MySQL, MongoDB
๐๐ฅ๐จ๐ฎ๐ & ๐๐๐ฏ๐๐ฉ๐ฌ: AWS (EC2, Lambda, RDS), Docker, Git, Jenkins, CI/CD
๐๐ ๐๐ง๐ ๐ข๐ง๐๐๐ซ๐ข๐ง๐ : AI Agents, Agentic AI workflows, RAG systems, Prompt Engineering, AI workflow automation
๐๐๐ซ๐ ๐ ๐๐๐ง๐ ๐ฎ๐๐ ๐ ๐๐จ๐๐๐ฅ๐ฌ (๐๐๐๐ฌ):OpenAI GPT-4/4o, Claude,Gimini,Cursor
๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง ๐๐ฅ๐๐ญ๐๐จ๐ซ๐ฆ๐ฌ:n8n, Make, Zapier
๐๐ฅ๐จ๐๐ค๐๐ก๐๐ข๐ง ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐ฆ๐๐ง๐ญ:Solidity, Ethereum, Solana, Web3.js, smart contracts, NFTs (ERC-20, ERC-721, ERC-1155)
๐๐๐ ๐๐ง๐ญ๐๐ ๐ซ๐๐ญ๐ข๐จ๐ง๐ฌ: Slack API, Notion API, Airtable API, HubSpot, Twilio, Google Sheets API, Stripe
๐๐ ๐ฒ๐จ๐ฎ'๐ซ๐ ๐ฅ๐จ๐จ๐ค๐ข๐ง๐ ๐๐จ๐ซ ๐ ๐๐๐๐ข๐๐๐ญ๐๐ ๐๐ฎ๐ฅ๐ฅ ๐ฌ๐ญ๐๐๐ค ๐๐๐ฏ๐๐ฅ๐จ๐ฉ๐๐ซ, ๐๐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง ๐๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ๐๐ง๐ญ, ๐จ๐ซ ๐ฐ๐จ๐ซ๐ค๐๐ฅ๐จ๐ฐ ๐๐ฎ๐ญ๐จ๐ฆ๐๐ญ๐ข๐จ๐ง ๐๐ฑ๐ฉ๐๐ซ๐ญ ๐๐จ๐ซ ๐ ๐จ๐ง๐-๐จ๐๐ ๐ฉ๐ซ๐จ๐ฃ๐๐๐ญ ๐จ๐ซ ๐ ๐ฅ๐จ๐ง๐ -๐ญ๐๐ซ๐ฆ ๐ซ๐จ๐ฅ๐, ๐'๐ ๐๐ ๐ ๐ฅ๐๐ ๐ญ๐จ ๐ก๐๐ฅ๐ฉ. ๐๐๐ฌ๐ฌ๐๐ ๐ ๐ฆ๐ ๐ ๐ฎ๐ฌ๐ฎ๐๐ฅ๐ฅ๐ฒ ๐ซ๐๐ฉ๐ฅ๐ฒ ๐ฐ๐ข๐ญ๐ก๐ข๐ง ๐ ๐๐๐ฐ ๐ฆ๐ข๐ง๐ฎ๐ญ๐๐ฌ
Front-End Development
Angular
Next.js
React
Node.js
JavaScript
Tailwind CSS
TypeScript
AWS Lambda
Full-Stack Development
Storybook
Smart Contract Development
Blockchain
Solidify
Blockchain Development
Ramsey M.
Algiers, Algeria
$25/hr
5.0
22 jobs
Hello! I'm Ramsey, a passionate software engineer specializing in blockchain, web and desktop application development. I excel in crafting smart contracts, DApps, tokens (ERC-20, BEP-20, NFTs), and integrating blockchain systems. Skilled in modern frameworks like React, Next.js, and Angular, I also bring backend expertise with Python, Node.js, and PHP to help create secure, scalable web solutions. For desktop apps, I use PyQt, C#, or JavaFX to deliver custom, multi-platform support. I also have strong expertise in AI related work including chatbots, recommendation systems, NLP, CV, and OpenAI API integrations.
I have a very detail-oriented, problem-solving approach, strong communication, and timely delivery, Iโm ready to bring your ideas to life. Letโs build together!
Blockchain Architecture
Artificial Intelligence
Mobile App
Web Application
React
Python
JavaScript
FastAPI
Machine Learning
PHP
REST API
Data Scraping
MySQL
Docker
Nguyen H.
Giao Thuy, Vietnam
$25/hr
5.0
2 jobs
I build production ready mobile applications using React Native and Flutter for businesses that need reliable, scalable, and high performance products.
My expertise is focused on Fintech, Logistics, and B2B SaaS applications, where stability, real time communication, secure data handling, and long term maintainability matter far more than simply shipping features.
I enjoy working on products that people depend on every day. Whether it is processing payments, tracking deliveries, managing business operations, or connecting teams in real time, I focus on building applications that continue performing reliably as users and business requirements grow.
I have worked on mobile applications that involve much more than UI implementation. My experience includes payment processing, real time synchronization, background services, offline functionality, push notifications, location tracking, API integration, authentication, and performance optimization under real world conditions.
I mainly work with startups and growing businesses from the United States, United Kingdom, Canada, Australia, and Germany, and I can easily align with your timezone to keep communication fast and development moving efficiently.
๐ฐ Fintech Applications
Financial applications demand accuracy, security, and consistency. Small technical issues can quickly become business problems.
I help clients solve challenges such as:
๐น Preventing duplicate transactions during unstable network conditions
๐น Building reliable wallet and balance synchronization
๐น Integrating Stripe and secure payment gateways
๐น Implementing secure authentication and role based permissions
๐น Creating financial dashboards with real time updates
๐น Improving API reliability for payment processing
The result is stable financial applications that users can trust while remaining easy to maintain as the platform grows.
๐ Logistics and Mobility Applications
Logistics platforms require constant synchronization between users, drivers, dispatchers, and backend systems.
I build applications capable of handling real operational environments by solving challenges including:
๐น Live GPS tracking with optimized battery consumption
๐น Real time driver and delivery status synchronization
๐น Offline functionality with automatic background synchronization
๐น Route visualization using Google Maps SDK
๐น Background location updates without affecting performance
๐น Push notifications for deliveries and operational events
The result is dependable logistics applications that continue working even under unstable network conditions.
๐ข B2B SaaS and Business Applications
Many business applications become difficult to maintain as teams and workflows grow.
I build scalable mobile applications that improve business operations while remaining simple for end users.
Typical challenges I solve include:
๐น Multi role authentication and permission systems
๐น Real time synchronization across multiple users
๐น Offline data collection with automatic syncing
๐น CRM, ERP, payment platform, and third party API integration
๐น Dashboard optimization for large business datasets
๐น Secure cloud based architecture for business applications
The result is mobile platforms that help businesses improve productivity without sacrificing reliability or performance.
โ๏ธ Technical Skills
โข React Native
โข Flutter
โข JavaScript
โข TypeScript
โข Node.js
โข Express
โข FastAPI
โข Firebase Authentication
โข Firebase Firestore
โข Firebase Cloud Messaging
โข Supabase
โข PostgreSQL
โข Supabase Edge Functions
โข Stripe
โข Google Maps SDK
โข REST APIs
โข GraphQL
โข WebSockets
โข Redux
โข Zustand
โข Git
โข GitHub Actions
โข CI/CD
โข App Store Deployment
โข Google Play Store Deployment
๐ง My Development Approach
โ Designing scalable application architecture before development
โ Building reliable API integration with proper error handling
โ Planning offline functionality from the beginning
โ Optimizing application performance throughout development
โ Writing clean, maintainable, and reusable code
โ Testing edge cases before release
โ Delivering applications ready for production deployment
๐ Clients I Work With
I primarily work with startups, SaaS companies, and growing businesses building long term digital products.
Industries I commonly work with include:
โข Fintech
โข Logistics
โข Fleet Management
โข Transportation
โข B2B SaaS
โข Business Operations
โข Field Service Management
โข Delivery Platforms
โข Internal Business Tools
โฐ Timezone
I can align with your timezone to ensure efficient communication, quick feedback cycles, and smooth collaboration throughout the project.
If you're building a mobile product and need someone who focuses on reliability, scalability, and long term success instead of simply delivering screens, feel free to click the Message button. I'd be happy to discuss your project and explore how we can build a mobile application that is ready for real users from day one.
React
React Native
Flutter
TypeScript
Mobile App Development
iOS Development
Android App Development
FlutterFlow
Expo.io
Dart
Stripe
Payment Gateway Integration
Google Maps API
Nero Global Tracking GPS Tracking
Firebase
Push Notifications
Supabase
PostgreSQL
FinTech
SaaS Development
Adnan A.
Islamabad, Pakistan
$13/hr
5.0
1 jobs
I help startups and businesses build production-ready mobile applications for iOS and Android using React Native, TypeScript, Node.js, Firebase, and modern APIs.
4+ Years Experience | 23+ Projects Delivered
Building a mobile app is more than creating screens. Poor performance, unstable APIs, confusing user flows, notification issues, payment bugs, and App Store problems can quickly turn a good product idea into a frustrating experience.
I work across the complete mobile stack, from Figma implementation and React Native development to backend APIs, databases, real-time features, payments, and App Store/Google Play deployment.
What I Can Build
React Native Mobile Apps
* iOS & Android Applications
* Marketplace & Booking Apps
* E-commerce Applications
* FinTech & Crypto Apps
* Social & Chat Applications
* Event & Ticketing Platforms
* SaaS Mobile Apps
* AI-Powered Mobile Apps
* Web3 & Crypto Wallet Apps
Mobile Features & Integrations
* REST API Integration
* Firebase Authentication
* Push Notifications
* Stripe & Payment Gateways
* In-App Purchases
* Real-Time Chat & WebSockets
* Google Maps & Location Services
* Camera & Image Uploads
* Deep Linking
* Social Login
* Offline / Local Storage
* Third-Party SDK Integration
Backend & Web
* Node.js / Express.js
* TypeScript / JavaScript
* MongoDB / PostgreSQL / Firebase
* REST APIs & WebSockets
* React.js / Next.js
* AWS & Cloud Deployment
Selected Projects
Live9 โ Event & Booking Platform
Developed a production mobile platform with artist/venue bookings, payments, real-time features, notifications, ticketing, user roles, and scalable backend APIs.
Quick Shop โ E-commerce Platform
Built web and mobile shopping experiences with product discovery, ordering workflows, responsive UI, API integrations, and synchronized customer experiences.
Tomi SuperApp
Worked on a production React Native application combining complex mobile functionality, real-time communication, API integrations, secure transactions, and cross-platform deployment.
Noottools Mobile App
Developed a React Native mobile application with secure authentication, complex transaction flows, API integrations, state management, and reusable UI components.
Tech Stack
* Mobile: React Native โข TypeScript โข JavaScript โข Expo โข Android โข iOS
* Frontend: React.js โข Next.js โข Tailwind CSS
* Backend: Node.js โข Express.js โข REST APIs โข WebSockets
* Database: MongoDB โข PostgreSQL โข Firebase โข Supabase
* Cloud & Tools: AWS โข Docker โข Git โข Firebase โข EAS
* Specialized: AI/LLM APIs โข Web3 โข Blockchain โข Crypto Wallets
Whether you need to build a new mobile app, complete an existing React Native project, fix production issues, integrate APIs, improve performance, or publish your app to the App Store and Google Play, I can help take it from development to production.
Send me your requirements, Figma designs, or existing codebase and let's discuss the best approach.
Crypto Wallet Development
Crypto Wallet
Decentralized Exchange
DeFi
Smart Contract Development
Smart Contract
Web3
Ethereum
Blockchain Development
Blockchain
Blockchain Architecture
Solidity
React Native
Rust
Android
iOS Development
Node.js
Next.js
Vatsal V.
Surat, India
$10/hr
5.0
11 jobs
๐ Senior Full Stack Developer | React ยท Next.js ยท Node.js ยท TypeScript ยท SaaS & AI Apps ยท CRM
Hi, I'm Vatsal โ a Full Stack Developer who helps startups and founders turn ideas into fast, scalable, production-ready web applications. I specialize in SaaS platforms and AI-powered apps, owning the full stack from frontend to backend, database, and deployment.
What I build:
-SaaS Platforms โ multi-tenant architecture, subscription billing, role-based access, admin dashboards
-AI-Powered Apps โ OpenAI integrations, chatbots, intelligent automation
-Full Stack Web Apps โ React/Next.js frontends with Node.js, Express & NestJS backends
-APIs & Integrations โ REST, GraphQL, third-party services, payment gateways
-Performance & Scaling โ optimizing slow apps, refactoring, fixing what's broken
Tech Stack:
-Frontend โ React, Next.js, TypeScript, Tailwind CSS
-Backend โ Node.js, Express.js, NestJS, REST & GraphQL
-Database โ PostgreSQL, MongoDB, Supabase
-Cloud โ AWS, Vercel, Docker
-AI โ OpenAI API, automation workflows
Why founders choose me:
โ Full ownership โ frontend, backend, database, deployment
โ Clean, scalable, maintainable code
โ Clear communication & on-time delivery
โ Long-term support after launch
I treat your product like a business, not a ticket. Whether you're launching an MVP, scaling an existing app, or fixing something broken, I'll take it from first line of code to deployment.
๐ฉ Send me a message or invite me โ I respond quickly.
โ Keywords:
Full Stack Developer | Senior Full Stack Developer | SaaS Platform Developer | MERN Stack Developer | React.js Development | Next.js Development | Node.js Backend Development | TypeScript Applications | API Integration Specialist | Supabase Developer | PostgreSQL Developer | MongoDB Developer | JavaScript Expert | Dashboard & Admin Panel | Marketplace Developer | Internal Tools | Booking Systems | eCommerce Solutions | Performance Optimization | Ongoing Product Support
Full-Stack Development
React
Node.js
SaaS
API
AI Implementation
Back-End Development
Web Application Development
Front-End Development
Next.js
Tailwind CSS
ExpressJS
JavaScript
TypeScript
SQL
CSS
AI Chatbot
MERN Stack
Supabase
Firebase
jiang H.
Chengdu, China
$55/hr
5.0
6 jobs
We are a team with a strong foundation in computer networking, operating systems, data structures, and algorithms. Proficient in blockchain theories and technologies, including basic knowledge of blockchain, distributed systems, and smart contracts. Familiar with mainstream DeFi applications and business logic, such as decentralized exchanges (DEX), lending, stablecoins, etc. Skilled in using the Solidity language for Ethereum smart contract development, Knowledgeable in programming languages such as Node.js, Golang, and Rust. Proficient in the Linux operating system.
โญ๏ธ Top Rated Team
โญ๏ธ 8+ years of experience in web development
โญ๏ธ 100% Job Success Score
We bring expertise in blockchain technologies and a deep understanding of DeFi applications and smart contracts. Our team combines technical proficiency with practical experience to deliver high-quality solutions in the blockchain space.
Our team would be glad to help you if you need the following:
DEVELOPMENT:
โ developing smart contracts on various blockchain platforms๏ผeg:EVM compatible Chain and Solana
โ non-fungible tokens (NFTs)
โ decentralized finance (DeFi)
โ wallet connect integration
โ layer2 OP stack or Polygon CDK
โ deploy blockchain node
โ smart contract audit.
โ monitoring data on the chain, currently querying through Subgraph.
โ cosmos && solana
โ bitcoin mining && bitcoin mining pool && bitcoin wallet
TOOLS:
โก Github
โก Notion
โก Trello
We understand the importance of creating a seamless and enjoyable experience for users, and we're committed to working closely with you every step of the way. From concept to launch, we'll ensure that your vision is brought to life.
Feel free to get in touch to discuss the best possible options to deliver your project.
Let's work together!
Bitcoin
Linux System Administration
GitHub
Node.js
Golang
Solidity
Rust
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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
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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
At A Glance: Bitcoin
Bitcoin is the new digital form of money, one that exists solely on the Internet. No one holds it, no one controls it โ offering users a new level of privacy in all their online transactions. As a virtual currency, Bitcoin allows users to take the shopping experience to the next level with anonymity, security, and rewards. Many vendors accept this new form of currency, as it offers lower transaction fees than most other kinds of payments. As a business, the ability to accept and utilize Bitcoins can boost your clientele as well as your profits. However, you may not be experienced in this rising craze, or potentially cannot spare the time from your other work to ensure your business, organization, or personal transactions are being managed properly. The Bitcoin specialists on Upwork are here to help, making the Bitcoin experience more efficient, profitable, and easier than ever before.
Fluent in the online workplace, these freelancers boast of excellent communication skills and the ability to collaborate remotely with clarity and efficiency. They possess skills in working independently with little guidance, so you can entrust the task to their hands and devote your attention to other pressing duties. Should any issues or bugs arise, these experts and their unique experience can combat the problems with creative methods and unique perspectives. With such a wide selection of experts to choose from on Upwork, youโre sure to find the Bitcoin specialist who possesses the unique interests, work ethic, experience range, and level of education you need.