Senior Java Engineer - Crypto Payments, High-Throughput
Summary
Senior Java backend engineer at OKX Singapore building and optimizing the OKX Pay payment backend — highly available, high-concurrency payment infrastructure with QR/scan-to-pay, transaction processing, and on-chain/stablecoin integrations, focused on data consistency, fund security, and stability.
OKX Singapore is seeking a skilled Java backend engineer to design, develop, and optimize the OKX Pay payment backend. You will build a highly available, high-concurrency payment infrastructure and contribute to core QR/scan-to-pay capabilities across the payments path.
You will own robust transaction processing, on-chain and stablecoin integrations, and work to ensure data consistency, fund security, and system stability in a fast-moving crypto payments environment.