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Airwallex is an AI-native financial operating system serving over 675,000 businesses globally, including McLaren Racing, Qantas, SHEIN, and TikTok. The company provides regulated financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific, with co-headquarters in San Francisco and Singapore and 2,300+ employees across 27 offices.
As a Senior Site Reliability Engineer on the Spend team, you will work closely with product teams to deliver and maintain scalable, reliable cloud infrastructure for key product initiatives. The Spend team builds Airwallex's financial operating layer, bringing together corporate cards, expenses, bills, and procurement on top of accounts, payments, and issuing infrastructure. The team is developing AI that makes real decisions about expenses, policies, and payments, aiming to automate 95%+ of submissions while maintaining compliance across multi-entity businesses, currencies, and audit trails.
You will lead infrastructure design and delivery for complex, high-risk projects including launching new services, executing global data centre migrations, and modernising data pipelines. Key responsibilities include improving reliability, performance, observability, and operational readiness across critical systems; partnering with development, DevOps, and security teams to build resilient services; owning infrastructure design for new services and roadmap initiatives; driving incident response, automation, team-level SLOs, runbooks, and DevOps performance metrics; and delivering reliable infrastructure for complex, cross-functional projects with high availability and compliance requirements.
You will work from the Singapore office five days a week. The role is ideal for someone who owns outcomes, makes decisions with incomplete information, maintains high standards independently, enjoys cross-timezone collaboration, and values in-person teamwork.
REQUIREMENTS:
- At least 5 years' experience in an SRE, DevOps, or infrastructure-focused engineering role
- Bachelor's degree in Computer Science, Software Engineering, or related field
- Expertise in cloud platforms (AWS or GCP), Kubernetes, observability, and incident response
- Experience leading 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
- Experience architecting and implementing cloud infrastructure for new services
- Experience embedding with development teams to improve reliability, performance, and operational readiness
- Experience leading incident response, observability, and automation across critical systems
- Experience owning team-level SLOs, runbooks, and DevOps performance metrics
- Experience collaborating with central DevOps and security teams for compliance and resilience
PREFERRED:
- Experience in fintech or similarly regulated industry
- Familiarity with data streaming, analytics pipelines, or financial data systems
