# Software Engineer Backend, Billing at Airwallex

Airwallex is hiring a Software Engineer Backend, Billing in Singapore, Singapore. Level rates it Little AI ●○○○; you can [apply on Airwallex](https://jobsbylevel.com/go/c9fe0dc0-6f0a-40c8-ab0d-c975be6e5962?utm_medium=ai-agent).

AI Level 1, AI centrality 0 out of 100. SG - Singapore.

## Details

- Company: [Airwallex](https://jobsbylevel.com/companies/airwallex)
- AI level: AI Level 1 (score 0 out of 100)
- Location: SG - Singapore
- Posted: October 27, 2026
- Apply: https://jobsbylevel.com/go/c9fe0dc0-6f0a-40c8-ab0d-c975be6e5962?utm_medium=ai-agent
- Free CV review for this job: https://jobsbylevel.com/cv-review?job=software-engineer-backend-billing-at-airwallex-bdd07b

## Prepare for this job

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## Description

About Airwallex Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 675,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own. We started in Melbourne in 2015 to build the infrastructure global commerce runs on. We're the regulated backbone behind global payments: not by accident, but by design. A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific. We're co-headquartered in San Francisco and Singapore, with more than 2,700 people across 27 offices. We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do. Read our operating principles to see it in full. How you'll make impact Airwallex’s Billing team is building the next generation of billing infrastructure for Airwallex and the businesses that use our platform. You’ll help shape the architecture and deliver reliable backend systems that support complex financial workflows. Lead the planning, design, and implementation of backend systems for Airwallex’s billing platform. Partner with Product and business teams to understand customer and business needs, shape technical direction, and deliver core functionality. Build reliable components within a microservices architecture, including systems that support flexible pricing, invoicing, and quote-to-cash workflows. Own the architecture and development of complex, distributed systems with high concurrency, high availability, and strong financial accuracy. Introduce practical technologies and engineering approaches that improve how the team builds, operates, and scales billing products. Raise the bar on engineering quality through clear design practices, coding standards, and constructive technical collaboration. You'll work from our Singapore office What we're looking for Essentials 3 + years of core Java development experience, building internet applications, large-scale financial systems, or e-commerce platforms. 1+ year of experience developing payment platforms. A 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 with common design patterns and the design and development of large-scale distributed, high-concurrency, high-load, and highly available systems. Experience with server-side technologies and with optimising service response and data queries to maintain service quality. A track record of solving complex engineering problems in production environments. The ability to work closely with Product and business teams, translate business needs into technical solutions, and make sound architectural decisions. Preferred Experience with international clearing and settlement or foreign exchange transactions. Fluent in English and Mandarin. You'll thrive here if You're comfortable owning the roadmap yourself. You own the outcome and you don't wait for permission to fix what's broken. You're comfortable with ambiguity. Give you a problem, not a prescription, and you'll run with it. You hold yourself to a high standard even when no one is watching. Quality and accountability aren't external expectations, they're internal ones. You value in-person collaboration and are happy being in the office five days a week. You say what you mean. You're direct, but you lead with respect. You know when to align and when to just decide. Collaboration isn't a way to avoid accountability. You simplify complexity rather than hiding behind it. Learn more about your team The Billing team at Airwallex builds a single platform that charges for everything: how we bill our customers, and how our customers bill theirs. We own the

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