Senior Billing Platform Engineer – Lead Design & Scale

airwallex (singapore) pte. ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Airwallex is seeking a senior Java engineer to design and build a scalable billing platform. Based in Singapore/Shanghai, you will lead architecture, mentor teams, and deliver high‑quality microservice components.

You will work with fintech platforms, build robust APIs, and adopt modern tech like Docker/Kubernetes, Spring Boot, and cloud services to support global customers.

Qualifications

• More than 5 years of Core Java development across internet/financial/e‑commerce systems.
• Over 1 year in payment platform development.
• Bachelor degree in computer science or related majors.
• Proficient in Java 8; strong multi‑threading and high concurrency.
• Familiar with design patterns and large‑scale distributed, high concurrency, high availability systems.
• Master server technologies to optimize service response and data queries.
• Familiar with Spring / Spring Boot.
• Familiar with HTTP, TCP/IP and REST specifications.
• Master Gradle / Maven and other build tools.
• Familiar with Docker cluster.
• Familiar with JSON & XML.

Responsibilities

• Lead planning, design, and implementation of the Airwallex engineering system.
• Collaborate with business/product teams to understand needs and architect solutions.
• Design and develop components within the microservice framework.
• Introduce innovative technologies and solutions for the team.
• Build and manage the technical team, establishing coding standards.

Skills

Core Java

High concurrency

Distributed systems

System analysis

Architecture design

Education

Bachelor degree in computer science or related

Tools

Java 8

Spring / Spring Boot

Gradle / Maven

Docker cluster

HTTP / TCP / IP

REST

JSON / XML

Kubernetes

NoSQL (Cassandra / Redis / Hadoop)

AWS / Aliyun Cloud

Job description

Government officials will NEVER ask you to transfer money or disclose bank log-in details over a phone call. Call the 24/7 ScamShield Helpline at 1799 if you are unsure if something is a scam.

AIRWALLEX (SINGAPORE) PTE. LTD.

Typically Replies in 30 Days

Senior Software Engineer, Billing

MCF-2026-1304649

CITY HOUSE, 36 ROBINSON ROAD 068877

Full Time

Professional

5 years exp

Engineering

$13,000 to $24,000 Monthly 14 applications Posted 29 Jul 2026 Closed on 28 Aug 2026

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Design

Planning

Multithreading

High Availability

leading technical teams

Spring Framework

Complex Systems

Computer Science

Spring Boot

Distributed Development

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