Backend Developer | Blockchain Engineer | Exchange Wallet Builder | SaaS Wallet Builder
- 💼 Backend & Infrastructure engineer focused on blockchain & fintech
- 🔧 Building exchange-level infrastructure with Go, gRPC, Protobuf, and Java
- 💡 Working on: chain RPC unification, hot/cold wallet orchestration, secure signature services
- 🌍 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 |
- 🧱 Modular backend infrastructure for exchanges
- 🔐 Signature services with strong security isolation
- 🔄 RPC systems with multi-chain extensibility
- ☕ Microservices and background job runners in Spring Boot
- 📮 email：cola_ocean@foxmail.com
- 👉🏻 wechat：cola_ocean
