Staff Software Engineer, Billing Platform

AIRWALLEX (SINGAPORE) PTE. LTD.; Singapore; Hybrid; SGD 120,000 - 180,000; Full time

Job summary

Airwallex is seeking a seasoned Backend Engineer to own Java-based microservices in a global billing platform. Based in Singapore/Shanghai, you will design scalable components, guide architecture, and collaborate with cross‑functional teams to deliver mission‑critical features.

You will work with Spring Boot, Docker, and distributed systems patterns to optimize performance under high load and help establish coding standards across the team.

Qualifications

• 5+ years in Core Java development and 5+ years in Internet application / large financial system / e-commerce platform development.
• 1+ year experience in payment platform development.
• Bachelor degree in computer science and related majors.
• Proficient in Java 8, familiar with Java multi-threading, high concurrency, IO / NIO, network communication.
• Familiar with common design patterns, and development of large-scale distributed, high concurrency, high load, high availability systems.
• Master various server technologies to optimize service response and data query, ensure service quality, and solve high concurrency issues.
• Familiar with Spring / Spring Boot.
• Familiar with HTTP, TCP / IP and REST specifications.
• Proficient with Gradle / Maven build tools.
• Familiar with the use of Docker cluster.
• Familiar with JSON & XML.

Responsibilities

• Lead the planning, design, and implementation of the Airwallex engineering system.
• Work with business/product teams to understand needs, design architecture, and develop core functions for complex systems.
• Design and develop components within the company's microservice framework.
• Introduce innovative technologies and solutions for the team.
• Build and manage the technical team and establish coding standards.

Skills

Core Java

High concurrency

Large-scale distributed systems

Education

Bachelor degree in computer science or related majors

Tools

Spring Boot

Docker

Gradle/Maven

REST/HTTP

JSON/XML

Kubernetes

Job description

Airwallex is seeking a seasoned Backend Engineer to own Java-based microservices in a global billing platform. Based in Singapore/Shanghai, you will design scalable components, guide architecture, and collaborate with cross‑functional teams to deliver mission‑critical features.

You will work with Spring Boot, Docker, and distributed systems patterns to optimize performance under high load and help establish coding standards across the team.