Senior Java Backend Engineer (Java + Blockchain)

About the Position

We are looking for a Senior Java Backend Engineer to join our team and work on blockchain-related projects. You will be responsible for designing and developing scalable backend services and microservices using Java and Spring Boot, with a focus on blockchain integrations.

Responsibilities6

• Design and develop scalable backend services and microservices in Java/Spring Boot
• Build and maintain blockchain integrations across multiple networks (Bitcoin, Ethereum, Solana, TRON)
• Develop and support custodial wallet systems
• Ensure reliability, security, and performance of blockchain-related infrastructure
• Collaborate with cross-functional teams on architecture and technical decisions
• Participate in code reviews and knowledge sharing

Requirements5

• Strong hands-on experience with Java and Spring Boot
• Proven experience building microservices architectures
• Hands-on experience with blockchain integrations (Bitcoin, Ethereum, Solana, TRON)
• Experience with custodial wallet systems
• English B2+