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Staff Backend Engineer

Bengaluru💼 Full-time🗓 2026-07-31 → 2026-09-26

Core

Design and build scalable, reliable Tier-1 services for order planning, fulfilment optimization, inventory allocation, and network cost management in a real-time e-commerce environment.

Role type

Staff Backend Engineer (Fulfilment Optimization)

Builds

Business Engine, Planner Solver, Network Manager, FO Inventory, WMS Fulfilment, Online Simulation, and FO Workflows for Coupang's order flow in Korea and Taiwan.

Domain

E-commerce, Logistics, Supply Chain, Distributed Systems

Deliverable

production ML models | product features

Required skills

Kotlin, Java, System Design, gRPC, Kafka, CPLEX, Redis, Multi-region Architecture, Resilience Engineering, Technical Leadership

Preferred skills

E-commerce Fulfilment, Optimization Systems, Agentic AI Tools, Spec-Driven Development

Technologies

Kotlin, Java, Spring Boot, CPLEX, Kafka, Cassandra, Elasticsearch, Redis, gRPC, Temporal, Drools

Responsibilities

Design scalable Tier-1 services; Own architecture across distributed systems; Write production code; Lead design and code reviews; Drive reliability for mission-critical services; Partner with Product, Data Science, and Operations; Mentor engineers.

Seniority

Staff, hands-on IC with broad architecture influence

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