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.

 

How you'll make impact

Spend is building the financial operating layer for modern businesses, and this role will help ensure its systems remain reliable as the product grows. You'll own the reliability foundations that support critical spend-management workflows.

• Own the reliability, availability, and performance of the systems powering Airwallex's spend-management products.

• Build and operate scalable infrastructure, observability, and automation that help engineering teams ship safely and recover quickly from incidents.

• Partner closely with product and engineering teams to improve resilience across corporate cards, expenses, bills, and procurement workflows.

• Drive operational excellence through thoughtful incident response, proactive risk reduction, and continuous improvement.

You'll work from our Singapore office at 1 Wallich St, #20-01 Guoco Tower, Singapore 078881 five days a week.

What we're looking for

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

• Minimum 5 years of experience in site reliability engineering, platform engineering, DevOps, or a closely related role.

• Experience operating production systems and improving their reliability, scalability, and performance.

• Strong understanding of cloud infrastructure, distributed systems, observability, incident response, and automation.

• A practical approach to diagnosing complex problems and preventing them from recurring.

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 making decisions with incomplete information and moving quickly anyway.

• 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're comfortable with ambiguity. Give you a problem, not a prescription, and you'll run with it.

• You value in-person collaboration and are happy being in the office five days a week.

Learn more about your team

The Spend team builds Airwallex's financial operating layer for modern businesses, bringing together corporate cards, expenses, bills, and procurement on top of our accounts, payments, and issuing infrastructure. We're building AI that makes real decisions about expenses, policies, and payments, aiming to get 95%+ of submissions down to one click, while every workflow still has to hold up across multi-entity businesses, currencies, and audit trails. This is a team for people who want broad ownership across product, data, and AI, while the roadmap is still being defined. If you want to build production AI for real financial workflows that directly change how businesses operate, this is where that work happens.

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.