Senior Site Reliability Engineer, Spend

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 2,300 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.

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.
• Strong experience supporting production systems with high availability and compliance requirements.
• Proven ability to work closely with developers and guide reliability best practices.

Preferred qualifications:

• Experience in a fintech or similarly regulated industry.
• Familiarity with data streaming, analytics pipelines, or financial data systems.
• Applicant Safety Policy: Fraud and Third-Party Recruiters
• To protect you from recruitment scams, please be aware that Airwallex will not ask for bank details, sensitive ID numbers (i.e. passport), or any form of payment during the application or interview process. All official communication will come from an @ airwallex.com email address. Please apply only through careers.airwallex.com or our official LinkedIn page.
• Airwallex does not accept unsolicited resumes from search firms/recruiters. Airwallex will not pay any fees to search firms/recruiters if a candidate is submitted by a search firm/recruiter unless an agreement has been entered into with respect to specific open position(s). Search firms/recruiters submitting resumes to Airwallex on an unsolicited basis shall be deemed to accept this condition, regardless of any other provision to the contrary.
• Equal opportunity
• Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit, qualifications, competence and talent. We don’t regard color, religion, race, national origin, sexual orientation, ancestry, citizenship, sex, marital or family status, disability, gender, or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation, please let us know.