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I will develop crypto wallet app, fintech app, payment app, and blockchain app
Stephanie W
About this gig
MPORTANT: Please message me before ordering to discuss your crypto project.
Ready to launch your Crypto Wallet App, Fintech App, or Blockchain App?
As a specialist developer, I build secure, high-performance apps for the Web3 space. Whether you need a Bitcoin wallet, a Trust Wallet clone, or a full DeFi platform, I can deliver.
My Services:
- Custom Crypto Wallet Development
- Fintech & Payment App Solutions
- DeFi & Blockchain App Development
- NFT Wallet & Gallery Integration
- Crypto Exchange and Trading App features
Core Features I Deliver:
- Secure Wallet Creation (Private Key & Seed Phrase)
- Send, Receive & Store Crypto Assets (Multi-Coin)
- Real-time Price Tracking
- Biometric & PIN Code Security
- NFT Display & Management
- DApp Browser (WalletConnect)
- Swap & Staking features via API integration
- Smart Contract interaction
Why Me?
- Security First: I use best practices for on-device key storage.
- Blockchain Expertise: Deep understanding of wallet mechanics and Web3.
- Full Service: From design to App Store deployment.
Click "Contact Seller" to start building your presence in the crypto market!
Get to know Stephanie W
Stephanie W
Secure FinTech and Payment App Developer
- FromUnited States
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English
Your expert developer for FinTech & Crypto. I engineer secure and scalable mobile solutions, including Crypto Wallets, Money Transfer Apps, and custom platforms. With a focus on robust architecture and flawless user experience, I help bring your vision to life. Contact me to build something remarkable.
FAQ
Do I need to pay for and run my own expensive blockchain node
Not at all. For most projects, we will use reliable and industry-standard third-party node providers like Infura or Alchemy. This is a highly cost-effective solution that provides high uptime and fast response times without the massive overhead of maintaining your own node
Can you add support for my custom token (e.g., an ERC-20 or BEP-20 token)
Yes, absolutely. Adding support for standard tokens on EVM-compatible chains (like Ethereum, BNB Chain, Polygon) is a common request. All I need from you is the token's official contract address, and I can integrate it into the wallet.
How do you guarantee the security of the user's private keys
This is my absolute top priority. Private keys are never stored on a server. They are generated and stored exclusively on the user's device using its native, hardware-backed secure storage (the Keychain on iOS and the Keystore on Android). I also implement best practices for encryption to ensure key
Can you build a wallet for a non-Ethereum blockchain like Solana, Cardano, or others
Yes, I can. While Ethereum (EVM) wallets are the most common request, I also have experience with other blockchain architectures. Please contact me before ordering to discuss the specific chain you have in mind, as the development process and complexity can vary.
Do I get the full source code and own the intellectual property
Yes, 100%. Upon final delivery and payment, you will receive the complete, well-documented source code for your application. You retain full ownership of the intellectual property. I am providing a service to build your product.
