Multi-Chain Crypto Wallet Development

I need an experienced blockchain developer to create a hosted crypto wallet. The wallet must support Ethereum, Binance Smart Chain, and Polygon,tron etc.

Key requirements:
- Multi-chain support (Ethereum, BSC, Polygon)
- Secure, user-friendly interface
- High scalability and performance
- Comprehensive transaction tracking and history

Ideal skills and experience:
- Proven blockchain development experience
- Strong knowledge of smart contracts
- Familiarity with wallet security protocols
- Experience with front-end and back-end development

Please provide examples of similar work done and relevant qualifications.