Coupang

Staff Back-end Engineer (Rocket Pay)

Coupang
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4 hours ago
Seoul, Korea, SouthStaff+
H1B Sponsor

Responsibilities

  • Define the technical direction of core payment domains beyond feature development.
  • Design, implement, and evolve highly reliable fintech systems that handle large-scale traffic.
  • Own the stability, scalability, security, and performance of core payment services including Coupay.
  • Identify complex technical challenges and develop fundamental solutions to improve payment speed and safety.
  • Lead the architecture of payment back-office, settlement, and reconciliation platforms.
  • Collaborate with Accounting, Treasury, and other Fintech engineering teams.
  • Improve operational stability and elevate the organization’s technical standards through code reviews, design reviews, and technical guidance.

Requirements

  • 10+ years of backend engineering experience.
  • Experience designing and operating large-scale distributed systems using Java or Kotlin and the Spring Framework.
  • Experience taking technical ownership of complex services or domains and proactively driving improvements.
  • Ability to design systems with strong attention to performance, reliability, data consistency, and security.
  • Experience structuring ambiguous problems and making technical decisions that produce tangible business impact.
  • Ability to translate customer experience and business requirements into well-architected technical solutions.
  • Preferred: experience leading architecture design and migration in JPA- and MSA-based environments.
  • Preferred: payment or fintech development and operations experience.
  • Preferred: high-traffic incident response, monitoring, and SLA improvement experience.
  • Preferred: large-scale data processing experience with strong settlement and reconciliation accuracy.
  • Preferred: technical leadership in agile software development environments.
  • Preferred: experience influencing engineers through technical judgment and system design decisions.

Benefits

  • Full-time regular employment with a 12-week probation period, which may be skipped, shortened, or extended based on business needs.
  • The recruitment process is application review, two interviews, and offer; schedules and results are communicated by email.
  • The posting may close early if all openings are filled.

Tech Stack

Categories

Coupang

About Coupang

10,000+ employees

Coupang is a technology and Fortune 150 company listed on the New York Stock Exchange (NYSE: CPNG) that provides retail, restaurant delivery, video streaming, and fintech services to customers around the world under brands that include Coupang, Eats, Play, Rocket Now, and Farfetch.