GrepJob
Bjak

Backend Developer

Bjak
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about 4 hours ago
Seoul, Korea, SouthMid Level / Senior

Responsibilities

  • Build backend services and APIs for various financial operations.
  • Design reliable systems to support real customer transactions and workflows.
  • Integrate with internal systems, financial partners, and third-party platforms.
  • Ensure backend quality across reliability, security, and data integrity.
  • Collaborate with product, frontend, mobile, and AI teams to launch features.
  • Improve existing systems by automating repeatable processes.

Requirements

  • Strong backend engineering experience in production systems.
  • Good understanding of APIs, databases, and integrations.
  • Experience building services used by real customers at scale.
  • Strong debugging, reliability, and data quality mindset.
  • Ability to make trade-offs between speed, correctness, and scalability.
  • Fintech or related experience is a plus but not required.

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