i will build complete web3 decentralized applications with smart contracts, responsive
frontends, and scalable backends. end-to-end dapp solutions including wallet integration,
blockchain data indexing, and real-time transaction handling.

what you get:
✓ smart contract architecture, development, and deployment
✓ web3.js / ethers.js integration with wallet support
✓ wallet integration (metamask, walletconnect, rainbow, coinbase)
✓ react/next.js responsive frontend development
✓ backend apis for data management and indexing
✓ real-time blockchain data synchronization
✓ multi-chain support (ethereum, polygon, arbitrum, bsc, base)
✓ production testing and deployment assistance

my process:
1. requirements gathering and architecture design
2. smart contract development and testing
3. frontend ui/ux development
4. backend api and database setup
5. wallet integration and blockchain connectivity
6. end-to-end testing and optimization
7. deployment on testnet and mainnet

what's included in base service:
- single dapp with basic features
- one smart contract (up to 300 lines)
- responsive frontend (react/next.js)
- basic backend apis
- testnet deployment
- wallet integration for single blockchain
- 2 rounds of revisions
- github repository with full code
- documentation and deployment guide

additional options available:
- multiple smart contracts or complex contracts (add tier)
- advanced features (nft trading, liquidity pools, etc.) (add tier)
- multi-chain deployment (add tier)
- third-party api integrations (add tier)
- professional security audit (add tier)

timeline: 21 business days depending on complexity

i am a full-stack web3 engineer with 3.5+ years of experience building production
defi platforms, nft marketplaces, and enterprise blockchain solutions. i prioritize
security, code quality, and seamless user experience.

note: project scope should be discussed before work begins. i will provide accurate
timeline and estimates after reviewing detailed requirements.