Backend Developer | Blockchain Engineer | Exchange Wallet Builder | SaaS Wallet Builder
๐ GitHub โข ๐ฌ Email โข ๐ผ blog
- ๐ผ Backend & Infrastructure engineer focused on blockchain & fintech
- ๐ง Building exchange-level infrastructure with Go, gRPC, Protobuf, and Java
- ๐ก Working on: chain RPC unification, hot/cold wallet orchestration, secure signature services
- ๐ Strong believer in open source & transparency
| Project | Description |
|---|---|
| exchange-wallet-service | A SaaS wallet platform for exchanges supporting chain scan, deposit, withdrawal, collection, cold/hot transfer, and internal business notifier |
| chains-union-rpc | A unified RPC application supporting multiple blockchains like Ethereum, Aptos, and TON |
| signature-machine | Signature engine with ECDSA/EdDSA address generation and signing service for exchanges |
- ๐งฑ Modular backend infrastructure for exchanges
- ๐ Signature services with strong security isolation
- ๐ RPC systems with multi-chain extensibility
- โ Microservices and background job runners in Spring Boot
- ๐ฎ email๏ผcola_ocean@foxmail.com
- ๐๐ป wechat๏ผcola_ocean