Senior Staff Engineer, Payment

OKX is a leading global cryptocurrency exchange offering a wide range of trading services, including spot and derivatives trading, as well as Web3 solutions.

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Maintainer signals as of 9/25/2026

C/O APPLEBY GLOBAL SERVICES (SEYCHELLES) LIMITED, Suite 202, 2nd Floor, Eden Plaza, Eden Island, PO Box 1352, Mahe, Victoria, Seychelles, Seychelles

Funding history

About OKX

OKX is a global cryptocurrency exchange known for its trading services and financial products. The platform offers a wide range of features, including spot and derivatives trading, staking services, and a user-friendly interface suitable for both beginners and experienced traders.

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Skills

About the Role

You will design, build, and operate high-scale payment APIs and distributed services using Java and Spring Boot. You will own systems from design through production, integrate payment channels, ensure transaction correctness and recovery, resolve distributed-systems issues, and mentor engineers.

Requirements

  • 8+ years of backend software development experience
  • Experience building and operating high-availability, large-scale applications
  • Knowledge of data structures, algorithms, concurrency, and software design patterns
  • Ability to drive cross-team collaboration and manage complex dependencies
  • Problem-solving skills and ability to work autonomously in a fast-paced environment
  • Strong written and verbal communication skills
  • Interest in crypto or fintech

Responsibilities

  • Design and build high-scale payment APIs and distributed services using Java and Spring Boot
  • Own systems end to end from design documentation through production ownership
  • Integrate and scale payment channels and methods across markets
  • Ensure consistency, idempotency, reconciliation, failure recovery, and operational observability
  • Participate in design and code reviews and evolve engineering standards
  • Investigate and resolve complex distributed-systems challenges
  • Collaborate with product, design, and partner teams to deliver systems and unblock dependencies
  • Mentor engineers and share knowledge
  • Keep current with industry developments

Benefits

  • Education subsidy
  • Team building programs and company events
  • Wellness and meal allowances
  • Comprehensive healthcare schemes for employees and dependants