Director of Engineering, Fulfillment Optimization

About the role

Coupang is looking for a Director of Engineering to lead its Fulfillment Optimization (FO) organization globally, covering Seoul and India. The FO platform decides how every order is planned, distributed and fulfilled, and sits on the critical path of purchases across Korea and Taiwan. The role combines ownership of production-critical Tier-1 systems with the leadership needed to build, scale and retain a high-performing engineering team.

Key responsibilities

• Lead the architecture of FO systems for scale, extensibility and reliability, covering order planning, fulfillment optimization, inventory allocation and network cost management.
• Define the technology roadmap and translate business objectives into technical execution plans.
• Resolve organizational blockers and align FO, Promise, WMS, Supply Chain and Operations teams.
• Own the architecture, development, testing, deployment and delivery of large-scale global software systems.
• Drive reliability of Tier-1 services: circuit breakers, graceful degradation, observability, capacity planning and incident prevention under strict P99 latency SLAs.
• Conduct design reviews of distributed systems involving gRPC service meshes, Kafka event pipelines, CPLEX solvers and multi-layer caching.
• Hire, mentor and retain engineers in Seoul and India, and partner with Product, Data Science and Operations.

Required profile

• 10+ years in engineering teams in a fast-moving environment, 10+ years in backend services and web applications.
• 7+ years architecting systems, 5+ years leading engineering teams across multiple locations.
• Proven track record of delivering high-availability distributed systems (sub-100ms P99, 99.95%+ availability).
• Experience managing distributed or remote teams across time zones and geographies.

Required skills

• JVM backend systems (Java, Kotlin)
• Kafka at scale, event-driven architectures, gRPC and REST, Redis and S3-backed caching
• System design: API design, domain and data modeling, messaging patterns
• Preferred: CPLEX, Gurobi or other optimization solvers, microservices migration, OpenAPI/Swagger, Agentic AI tools, multi-region systems