Singapore-Based Backend Engineer, Billing Platform Lead

re-zoo-me; Singapore; On-site; SGD 160,000 - 180,000; Full time

Job summary

Airwallex is seeking a senior Java engineer based in Singapore to design and implement scalable microservices for our billing platform. You will work with global teams to deliver high‑quality, resilient services, applying best practices in concurrency, data modeling, and system design.

The role emphasizes architecture, hands‑on development, and collaboration with cross‑functional teams to enable faster, reliable billing and pricing workflows across regions.

Qualifications

• Bachelor’s degree in computer science or a related field.
• 6+ years of Core Java development and large system experience.
• Experience with high concurrency, distributed systems and design patterns.

Responsibilities

• Lead the planning, design, and implementation of the engineering system.
• Understand business needs and drive architecture and core function development.
• Develop components within the microservice framework and new tech.
• Establish coding standards and mentor the team.

Skills

Core Java

High concurrency

Distributed systems

Multi-threading

REST / microservices

Design patterns

Education

Bachelor in Computer Science

Tools

Docker Swarm

Kubernetes

Redis

Cassandra

Hadoop

Job description

Airwallex is seeking a senior Java engineer based in Singapore to design and implement scalable microservices for our billing platform. You will work with global teams to deliver high‑quality, resilient services, applying best practices in concurrency, data modeling, and system design.

The role emphasizes architecture, hands‑on development, and collaboration with cross‑functional teams to enable faster, reliable billing and pricing workflows across regions.