Staff Site Reliability Engineer, Spend Foundations

Job Overview

Staff Site Reliability Engineer, Spend Foundations at Airwallex. This role can be based in Singapore or Melbourne.

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 200,000 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 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 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.

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, constantly pushing the boundaries of what's possible in financial technology. We value technical craftsmanship, continuous learning, and strong ownership, building scalable, reliable, and secure products that enable global business growth. Our SRE team pioneers new engineering solutions to complex challenges, setting standards and frameworks for other teams. We take ownership of the availability, performance, monitoring, and capacity planning of our global services, driving operational excellence at scale.

Key Responsibilities

• Drive the strategic vision and roadmap for Site Reliability Engineering at Airwallex, aligned with business objectives and product goals.


• Architect and oversee the implementation of highly scalable, secure, and resilient cloud infrastructure for new services and platform-wide initiatives.


• Lead and mentor senior engineers and cross-functional teams in reliability engineering best practices, automation, and incident management.


• Champion and evolve operational excellence through advanced observability, SLO management, runbooks, and proactive risk mitigation.


• Lead incident response for high-severity incidents, facilitating post-mortems and driving continuous improvements.


• Collaborate closely with Product, Engineering, Security, and DevOps leadership to ensure compliance, resilience, and alignment across functions.


• Influence and shape engineering culture around reliability, scalability, and DevOps principles across multiple teams.


• Advocate for innovation in tooling, automation, and infrastructure to improve developer productivity and service uptime.

Required Qualifications

• 10+ years of experience in SRE, DevOps, or infrastructure engineering roles, with progressive responsibility.


• Proven ability to lead SRE strategy and execution for large-scale, complex, cross-functional projects.


• Deep expertise with cloud platforms (AWS/GCP), Kubernetes, container orchestration, observability, and incident response frameworks.


• Strong experience supporting production systems with stringent high availability, compliance, and security requirements.


• Demonstrated leadership in mentoring and growing technical teams.


• Excellent collaboration and communication skills, able to influence stakeholders at all levels.


• Degree in Computer Science or related field.

Preferred Qualifications

• Experience in a fintech or similarly regulated industry


• Familiarity with data streaming, analytics pipelines, or financial data systems