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Blockchain Engineer - Custodial Wallet

moomooSingapore, Singapore, Singapore
On-site Full-time

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Experience Level

Experience

Qualifications

Bachelor's degree or higher in Computer Science, Information Security, or a closely related field.3+ years of backend development experience, including at least 1 year focused on blockchain wallet or node integration. Expertise in one or more backend programming languages (Node.js, Golang, Java, Rust, Python). Deep understanding of blockchain architecture, transaction mechanisms, and concepts such as block structure, gas/fees, and nonces. Experience with microservices, message queues (Kafka / RabbitMQ), caching (Redis), and databases (MySQL / PostgreSQL). Strong awareness of security best practices, especially regarding key management, signing, and permission control.

About the job

  1. Design, develop, and enhance core modules of custodial wallets, focusing on account management, deposits, withdrawals, sweeping, signing, and transaction broadcasting.
  2. Seamlessly integrate diverse blockchain protocols (BTC, ETH, Solana, Tron, Cosmos, etc.) utilizing RPC, SDKs, or custom solutions to maintain stable and high-availability operations.
  3. Contribute to the architectural and modular design of the wallet system, driving improvements in scalability, reliability, and performance.
  4. Establish automated monitoring, alerting, and logging systems to ensure comprehensive traceability of asset flows.
  5. Create high-quality, testable code, actively engaging in code reviews and CI/CD processes.
  6. Work collaboratively across teams, including frontend, DevOps, security, and risk management, to optimize overall system performance and security.

About moomoo

Moomoo is a pioneering financial services platform that offers innovative solutions for investors. Based in Singapore, we are committed to providing state-of-the-art technology and exceptional user experience in the financial markets.

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