Full-Stack Blockchain & Automation Platform Development (Web & Mobile App) | Web3, Blockchain, API, AI, & Payment Integration
Budget: $750 – $1,500 USD
We are looking for a highly skilled Full-Stack Developer to build a production-grade Web3 application that integrates Blockchain, API, AI model, and Payment Gateway functionality, available for both web and mobile platforms. This project requires front-end, back-end, and mobile app development, along with blockchain smart contract deployment, automation workflows, and seamless AI model integration.
The objective is to develop a scalable, secure, and modular platform with advanced blockchain features, including smart contracts, as well as AI integration and payment gateway functionality. Both web and mobile apps will interact with the blockchain and backend services.
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Scope of Work
Blockchain & Smart Contracts
• Design and deploy production-ready smart contracts (ERC20 / ERC721 / custom logic).
• Implement:
• Role-based access control
• Event emission for backend automation
• Gas optimization and secure validation
• Deploy contracts on testnet and provide deployment details.
Backend Development & Automation
• Build a Node.js / Express.js backend.
• Integrate blockchain interaction using Web3.js / Ethers.js.
• Implement automation workflows triggered by blockchain events.
• Develop RESTful APIs for both web and mobile app communication.
• Add proper logging, error handling, and validation.
Frontend Development
• Web Application: Develop a production-ready front-end using React.js.
• Implement Web3 wallet connection (MetaMask or similar).
• Smart contract interaction UI.
• Transaction status and history views.
• Follow component-based architecture and scalability best practices.
• Mobile Application: Develop a cross-platform mobile app using Flutter.
• Implement Web3 wallet connection for mobile.
• Mobile UI for smart contract interaction and transaction history.
Database & Data Management
• Integrate MongoDB or PostgreSQL.
• Store user interaction data, transaction metadata, and automation logs.
• Ensure data integrity and structured schema design.
AI Model Integration
• Integrate AI models for enhanced features such as data processing, prediction, or recommendations.
• Ensure seamless integration of the AI models with the front-end and back-end.
Payment Gateway Integration
• Implement payment gateway integration (e.g., Stripe, PayPal, Cryptocurrency).
• Ensure secure and smooth transaction handling for web and mobile apps.
Code Quality & Deployment
• Use Git-based version control.
• Deliver clean, modular, and well-documented code.
• Provide environment configuration and deployment scripts.
• Follow production coding standards and best practices.
--------------------------------------------------------------------------------------------
Deliverables
• Deployed smart contracts on testnet.
• Fully functional full-stack Web3 application (web and mobile).
• Backend automation integrated with blockchain events.
• REST APIs with documentation.
• AI model integration and data-driven functionality.
• Payment Gateway integrated within the platform.
• Clean, production-ready source code.
• Short technical documentation explaining system architecture.
--------------------------------------------------------------------------------------------
Skills Required
• Blockchain Development (Ethereum, Solidity, Smart Contracts)
• Web3 Integration (Web3.js, Ethers.js)
• Full-Stack Development (React.js, Node.js, Express.js, PHP, Laravel, Django)
• Mobile App Development (Flutter)
• AI Model Integration
• API Development & Integration
• Backend Development (Node.js, Python, Laravel)
• Frontend Development (React.js, JavaScript)
• Database Management (MongoDB / PostgreSQL, MySQL)
• Payment Gateway Integration (Stripe, PayPal, Cryptocurrency)
• Git & Deployment Practices
• Software Development
--------------------------------------------------------------------------------------------
Project Type
• Fixed Price
Budget
• USD $400 – $800 (Negotiable based on experience and delivery quality)
Project Timeline
• 19 Days
⸻
Preferred Freelancer
• Proven experience in production-level blockchain projects.
• Strong understanding of automation, backend workflows, mobile app development, and AI integration.
• Ability to deliver clean, scalable, and secure code.
• Clear communication and documentation skills.
⸻
How to Apply
Please include:
• A brief overview of your relevant experience.
• Technologies you will use for this project.
• Estimated timeline for delivery.
The objective is to develop a scalable, secure, and modular platform with advanced blockchain features, including smart contracts, as well as AI integration and payment gateway functionality. Both web and mobile apps will interact with the blockchain and backend services.
-----------------------------------------------------------------------------------------------------------------------------
Scope of Work
Blockchain & Smart Contracts
• Design and deploy production-ready smart contracts (ERC20 / ERC721 / custom logic).
• Implement:
• Role-based access control
• Event emission for backend automation
• Gas optimization and secure validation
• Deploy contracts on testnet and provide deployment details.
Backend Development & Automation
• Build a Node.js / Express.js backend.
• Integrate blockchain interaction using Web3.js / Ethers.js.
• Implement automation workflows triggered by blockchain events.
• Develop RESTful APIs for both web and mobile app communication.
• Add proper logging, error handling, and validation.
Frontend Development
• Web Application: Develop a production-ready front-end using React.js.
• Implement Web3 wallet connection (MetaMask or similar).
• Smart contract interaction UI.
• Transaction status and history views.
• Follow component-based architecture and scalability best practices.
• Mobile Application: Develop a cross-platform mobile app using Flutter.
• Implement Web3 wallet connection for mobile.
• Mobile UI for smart contract interaction and transaction history.
Database & Data Management
• Integrate MongoDB or PostgreSQL.
• Store user interaction data, transaction metadata, and automation logs.
• Ensure data integrity and structured schema design.
AI Model Integration
• Integrate AI models for enhanced features such as data processing, prediction, or recommendations.
• Ensure seamless integration of the AI models with the front-end and back-end.
Payment Gateway Integration
• Implement payment gateway integration (e.g., Stripe, PayPal, Cryptocurrency).
• Ensure secure and smooth transaction handling for web and mobile apps.
Code Quality & Deployment
• Use Git-based version control.
• Deliver clean, modular, and well-documented code.
• Provide environment configuration and deployment scripts.
• Follow production coding standards and best practices.
--------------------------------------------------------------------------------------------
Deliverables
• Deployed smart contracts on testnet.
• Fully functional full-stack Web3 application (web and mobile).
• Backend automation integrated with blockchain events.
• REST APIs with documentation.
• AI model integration and data-driven functionality.
• Payment Gateway integrated within the platform.
• Clean, production-ready source code.
• Short technical documentation explaining system architecture.
--------------------------------------------------------------------------------------------
Skills Required
• Blockchain Development (Ethereum, Solidity, Smart Contracts)
• Web3 Integration (Web3.js, Ethers.js)
• Full-Stack Development (React.js, Node.js, Express.js, PHP, Laravel, Django)
• Mobile App Development (Flutter)
• AI Model Integration
• API Development & Integration
• Backend Development (Node.js, Python, Laravel)
• Frontend Development (React.js, JavaScript)
• Database Management (MongoDB / PostgreSQL, MySQL)
• Payment Gateway Integration (Stripe, PayPal, Cryptocurrency)
• Git & Deployment Practices
• Software Development
--------------------------------------------------------------------------------------------
Project Type
• Fixed Price
Budget
• USD $400 – $800 (Negotiable based on experience and delivery quality)
Project Timeline
• 19 Days
⸻
Preferred Freelancer
• Proven experience in production-level blockchain projects.
• Strong understanding of automation, backend workflows, mobile app development, and AI integration.
• Ability to deliver clean, scalable, and secure code.
• Clear communication and documentation skills.
⸻
How to Apply
Please include:
• A brief overview of your relevant experience.
• Technologies you will use for this project.
• Estimated timeline for delivery.
Related categories:
JavaScript
Mobile App Development
Web Development
Flutter
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AI Development
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