Senior Site Reliability Engineer, Spend

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, 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.

Attributes We Value

We hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you’re motivated by our mission and operating principles . You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor.

You're humble and collaborative; turn zero‑to‑one ideas into real products, and you “get stuff done” end-to-end. You use AI to work smarter and solve problems faster. Here, you’ll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let’s build what’s next.

About the team

The Engineering team at Airwallex is a diverse group of innovators, builders, and problem solvers, driven by a mission to empower businesses to operate anywhere, anytime. We thrive in a collaborative and fast-paced environment, where we're constantly pushing the boundaries of what's possible in the financial technology space. As a team, we value technical craftsmanship, continuous learning, and a strong sense of ownership, working together to build scalable, reliable, and secure products that empower businesses of all sizes to grow without borders.

Our SRE team is breaking new engineering ground and we have the opportunity to define innovative solutions for a number of challenges, paving the way for other teams to follow in our footsteps. This team is responsible for the availability, performance, monitoring and capacity planning of our Global services.

What you’ll do

As a Senior Site Reliability Engineer, you’ll work closely with product teams in Spend to deliver and maintain scalable, reliable cloud infrastructure in support of key product initiatives. Aligned to the roadmap, you’ll lead on infrastructure design and delivery for complex, high-risk projects such as launching new services, executing global data centre migrations, and modernising data pipelines.

Responsibilities:

Architect and implement cloud infrastructure for new services and roadmap initiatives.

Embed with development teams to drive reliability, performance, and operational readiness.

Lead incident response, observability, and automation across critical systems.

Own team-level SLOs, runbooks, and DevOps performance metrics.

Collaborate with central DevOps and security teams to ensure compliance and resilience.

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:

Minimum 5 years in an SRE, DevOps, or infrastructure-focused engineering role.

Bachelor degree in Computer Science, Software Engineering, or a related field.

Expertise in cloud platforms (AWS/GCP), Kubernetes, observability, and incident response.

Able to lead SRE strategy for large-scale, cross-functional projects.