2 months ago
Responsibilities
- Design and build scalable, reliable Tier-1 services for order planning, fulfilment optimization, inventory allocation, and network cost management.
- Own architecture across distributed systems involving gRPC service meshes, Kafka event pipelines, CPLEX optimization solvers, Redis and S3-backed caching, and multi-region deployments.
- Write and review production code in Kotlin and Java while setting standards for correctness, performance, and operational safety.
- Lead design and code reviews focused on correctness, scalability, performance, and reliability for latency-sensitive order flows.
- Drive reliability through circuit breakers, graceful degradation, observability, and incident prevention.
- Partner with Product, Data Science, and Operations on fulfilment optimization initiatives, including PDD rationalization, CFCC, CFlow transport planning, inventory group management, and solver model improvements.
- Mentor engineers and create reusable technical mechanisms such as pipeline patterns, adapter abstractions, and feature-flag discipline.
Requirements
- Experience designing and operating high-scale distributed systems with strict latency and reliability requirements.
- Excellent hands-on coding ability in Kotlin or Java for backend systems at scale.
- Deep understanding of API design, concurrency, data modelling, caching, messaging, and service-to-service communication using gRPC and REST.
- Experience with production systems handling high QPS, large data volumes, or Tier-1 SLAs.
- Experience with event-driven architectures using Kafka at scale.
- Experience with multi-region systems, including region-specific routing, data isolation, and cross-border fulfilment.
- Experience with resilience engineering, including circuit breakers, retry strategies, load testing, capacity planning, and graceful degradation.
- Track record of technical leadership through architecture direction, cross-team alignment, and mentoring senior engineers.
- Preferred experience in ecommerce, fulfilment, supply chain, logistics, inventory, order management, or planning systems.
- Preferred experience with optimization solvers such as CPLEX or OR-Tools, decision engines, constraint programming, or production systems integrated with data science.
- Preferred experience using AI-assisted coding agents such as Cursor, Copilot, Devin, or Claude Code.
- Preferred experience with specification-driven development using OpenAPI/Swagger, Protocol Buffers, API-first design, or contract-first development.
Benefits
- Hybrid work model
- Employment-protection eligibility may receive preferential treatment in accordance with applicable laws
Tech Stack
Categories
About Coupang
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.