Java Developer for REST APIs, CLI Tools, and Crypto Utilities

I will develop custom Java-based tools for your application, startup, or backend.
My services include:

🔧 Spring Boot REST APIs (secure, documented)

🔍 CLI tools for crypto, JSON processing, data handling

🛠 Lightweight GUI apps (JavaFX) on request

🧾 License key systems or wallet checkers

Skilled in Java 17, Gradle, JSON, H2 DB, Coingecko & Web3 APIs.
Delivery includes full source code + documentation

The price is negotiable and the delivery time depends on complexity.