Backend Engineer, AI-Driven Commerce Agents

Rakuten; Singapore; On-site; SGD 140,000 - 210,000; Full time

Job summary

Rakuten Asia Pte. Ltd., based in Singapore's Central Business District, leads regional development for AI and data-driven commerce solutions. The team builds backend services powering conversational and autonomous agents that interact with a vast catalog, pricing, and checkout workflows.

You will design safe, auditable agent actions with low latency in a high-traffic environment. The role emphasizes building robust ML-backed systems, scaling to millions of SKUs, and collaborating across product,

Qualifications

• 5+ years building and operating production backend services.
• Experience developing ML-based production systems (search/recsys/ads/risk).
• Experience with high-traffic transactional backends in e-commerce or similar.

Responsibilities

• Build backend services behind conversational and autonomous commerce agents.
• Own catalog search, inventory, cart, checkout APIs with secure contracts.
• Design safety, idempotency, and audit trails for agent actions.
• Ensure low latency and scalable data pipelines for large SKUs databases.
• Collaborate with product and safety teams to ship reliable agents.

Skills

Python

Go/Java

Distributed Systems

LLM

Tools

Kubernetes

CI/CD

IaC

Job description

Rakuten Asia Pte. Ltd., based in Singapore's Central Business District, leads regional development for AI and data-driven commerce solutions. The team builds backend services powering conversational and autonomous agents that interact with a vast catalog, pricing, and checkout workflows.

You will design safe, auditable agent actions with low latency in a high-traffic environment. The role emphasizes building robust ML-backed systems, scaling to millions of SKUs, and collaborating across product,