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Fiverr Pro
English
$
USD
I will build a custom web3 crypto wallet or blockchain app
Alexander
About this gig
I build professional crypto wallets and blockchain applications using Flutter.
secure, fully functional and production ready.
What I can build:
Multi-chain crypto wallets (BTC, ETH, SOL, BNB and more)
DeFi applications with swap and staking
NFT wallets and marketplaces
Token dashboards and portfolio trackers
Custom blockchain integrations
Web3 dApp browsers
Why choose me:
I built Nexus Wallet a fully deployed multi-chain crypto wallet supporting 10+ blockchains with:
Built-in DEX swap across EVM chains and Solana
dApp browser with Uniswap, PancakeSwap, Aave and more
Ledger hardware wallet integration via Bluetooth
Unique decoy wallet security system
Biometric and PIN authentication
Real-time price tracking
This was built entirely from scratch. I know this space deeply.
Deliverables:
Full Flutter source code
Working Android APK
Documentation and setup guide
Smart contract integration (if needed)
Message me before ordering every blockchain project is unique and I want to make sure I understand your requirements fully.
Get to know Alexander
Alexander
Developer
- FromNigeria
- Member sinceApr 2026
Languages
English
I'm a developer specializing in Python automation, bot development, and Web3 applications. I build systems that run 24/7 without human intervention, scrapers, automation bots, workflow pipelines, and crypto/blockchain apps.
My work includes a fully deployed automation SaaS, a multi-chain crypto wallet with advanced security features, and various browser automation systems built with Playwright and Python.
I work fast, communicate clearly, and deliver working code, not excuses. If you need something automated or built, let's talk.
Other Mobile App Development Services I Offer
FAQ
Which blockchains do you support?
Bitcoin, Ethereum, BNB Chain, Solana, Avalanche, Polygon, Tron and most EVM-compatible chains. Ask me about specific chains.
Can you integrate DeFi protocols like Uniswap or Aave?
Yes. I have hands-on experience integrating major DeFi protocols into wallet applications.
Is the wallet secure?
Yes. I implement industry-standard security including encrypted key storage, biometric authentication, PIN protection and optional decoy wallet features.
Do I get full ownership of the code?
Yes. you receive complete source code with full ownership rights.
Can you add a custom feature not listed here?
Message me with details. Most custom features are buildable. I'll confirm and adjust the price accordingly.
