Senior Software Engineer, Business Accounts

Senior Software Engineer, Business Accounts

About Airwallex Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 250,000 businesses worldwide – including Brex, Rippling, Navan, Qantas, SHEIN and many more – with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale. Proudly founded in Melbourne, we have a team of over 2,300 of the brightest and most innovative people in tech across 27 offices around the globe. Valued at US$11 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career, join us.

About the team The Business Accounts Team is building the intelligent orchestration layer for Airwallex’s business account ecosystem – connecting Cash, Yield, Lending, and broader Airwallex product surfaces into one unified financial experience for businesses. As Airwallex continues to expand its product suite, our customers increasingly need programmable, automated, and intelligent ways to manage their money: moving funds between transactional accounts, yield-generating accounts, and lending facilities; optimising liquidity; and responding dynamically to business activity across payments, card spend, collections, and future product lines. Business Accounts is a new strategic domain designed to power this next generation of financial automation. This is a high-impact opportunity to join a new team at an early stage, shape the technical foundations of a core business platform, and build products that sit at the centre of Airwallex’s business customer experience.

What you’ll do

• As the Senior Software Engineer on the Business Accounts team, you will help build the intelligent orchestration layer for Airwallex’s business account ecosystem, connecting Cash, Yield, Lending, and broader Airwallex product surfaces into a unified financial experience for businesses. This role is based in Sydney.

Responsibilities

• Contribute to the architecture and long-term technical vision of our backend systems, helping define the engineering strategy and framework selection for the Yield squad.

• Own the end-to-end delivery of core investment workflows, including client signup, investment, and redemption processes—from design to production.

• Build and maintain mission-critical financial infrastructure, such as reconciliation controls, unit registries, and investment ledgers.

• Write high-quality, testable code with a focus on reliability and maintainability, ensuring seamless integration with our external investment providers.

• Promote and uphold engineering best practices, with a strong emphasis on observability, API design, and robust integration rails.

• Collaborate with cross-functional teams including Product, Infrastructure, and Design to ensure our product delivers the best possible experience for businesses.

• Who you are

• We’re looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.

Minimum qualifications:

• 5+ years of professional software engineering experience.
• Bachelor degree or above in computer science or software engineering related majors.
• Have experience solving distributed systems challenges – scalability, consistency, latency.
• Mastery of backend technologies is essential.
• While we do not mind what language you have most recently been using, we are using Kotlin w/ vert.x, Temporal & Kafka
• Experience working with automated tests and been involved in quality control processes.
• Cloud technologies experience with GCP or AWS, including Docker and Kubernetes.
• Experience integrating with observability tooling such as Splunk, NewRelic, Prometheus, Grafana.

Preferred qualifications:

• Experience in financial services, lending, payments, or credit products

• Experience with SaaS product offering as a platform.

• sydney