Airwallex

Software Engineer Backend, Billing

Airwallex
Apply
2 days ago
Singapore, SingaporeMid Level

Responsibilities

  • Lead the planning, design, and implementation of backend systems for the billing platform.
  • Partner with Product and business teams to shape technical direction and deliver core functionality.
  • Build reliable services supporting pricing, invoicing, payment platforms, and quote-to-cash workflows.
  • Own the architecture and development of complex distributed systems with high concurrency, availability, and financial accuracy.
  • Improve the technologies, engineering practices, design standards, and coding quality used by the team.
  • Optimize service responses and data queries to maintain service quality.

Requirements

  • At least 3 years of core Java development experience building internet applications, large-scale financial systems, or e-commerce platforms.
  • At least 1 year of experience developing payment platforms.
  • Bachelor’s degree in Computer Science or a related field.
  • Strong command of Java 8, including multithreading, high concurrency, I/O or NIO, and network communication.
  • Experience designing and developing large-scale distributed, high-concurrency, high-load, and highly available systems.
  • Experience with server-side technologies and optimizing service response and data queries.
  • Track record of solving complex engineering problems in production environments.
  • Ability to work with Product and business teams, translate business needs into technical solutions, and make architectural decisions.
  • Preferred experience with international clearing and settlement or foreign exchange transactions.
  • Fluency in English and Mandarin is preferred.

Benefits

  • Work from Airwallex’s Singapore office five days per week.
  • The role offers in-person collaboration within the Billing team.

Tech Stack

Categories

Airwallex

About Airwallex

1,001-5,000 employees

Airwallex builds a global payments and financial operations platform for businesses, offering payment acceptance, multi-currency accounts, FX and transfers, card issuing, treasury and spend management via APIs and web apps. It monetizes through transaction and foreign-exchange fees and related account services. Founded in Melbourne in 2015 and privately held, the company serves customers worldwide, with notable users including Brex, Canva and Qantas.

Contact me