Software Engineer II, T0 Infra

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 150,000 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 1,700 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$6.2 billion and backed by world-leading investors including Visa, Airtree, Blackbird, Sequoia, DST Global, Greenoaks, Salesforce Ventures, Lone Pine, and Square Peg, 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.

Keywords: platform, k8s, controller, operator

Hiring Location: Shanghai, Singapore

Airwallex is a rapidly growing fintech unicorn, founded in 2015 and now flourishing at the Series E financing stage. With a global footprint across Asia-Pacific, Europe, North America, and APAC, we specialize in providing diverse financial payment solutions for B2B merchants, empowering businesses to operate seamlessly anywhere, anytime.

Who We Are? About the Team:

As Airwallex's engineering capabilities continue to scale, our infrastructure teams are at the forefront of propelling us into a future of seamless global operations. Our seven specialized domain teams are not just technical powerhouses but the architects of innovation and efficiency, driving unparalleled engineer productivity and resource optimization.

• Tier-X Cloud Infrastructure owns our globally distributed service infrastructure for standard domain teams.
• Tier-0 Cloud Infrastructure specializes in building and maintaining critical product services which requires five-9s of availability or above.
• Productivity owns our CICD, testing and development tools for our software engineers
• Observability focuses on providing the best monitoring and alerting tools
• Data Infrastructure is tasked with providing our data engineering and analytics teams with the right tools.
• Database owns the multitude of different database solutions from SQL to Redis.
• Networking provides a reliable and secure cloud and hardware network infrastructure

Our teams work to provide the best possible experience for our developers and customers while providing a safe and secure environment to ensure that our financial solutions are always available.

In this role, you will:

1. Develop Cloud Infrastructure Services: Build scalable and resilient cloud-native infrastructure services and platforms using Kubernetes, Istio, Crossplane, ArgoCD/Rollout/Workflow, and other modern technologies, emphasizing full automation and GitOps best practices.
2. Enhance Infrastructure Platform Reliability and Security: Proactively monitor system health and performance, and implement solutions to address infrastructure issues and security vulnerabilities before they impact customers.
3. Collaborate on Infrastructure Architecture: Partner with senior engineers and cross-functional stakeholders to continuously evolve the infrastructure and technology stack, improving reliability, scalability, and developer experience.
4. Contribute to Incident Response & Operations: Participate in on-call rotations to troubleshoot and resolve infrastructure issues, ensuring minimal downtime and high availability across environments.
5. Integrate Emerging Technologies: Stay ahead of industry trends in AI, Kubernetes, Service Mesh (Istio), Crossplane, GitOps, and cloud platforms. Evaluate and help integrate innovative tools and practices to strengthen the infrastructure ecosystem.

You might be a great fit if you:

1. Distributed Systems Knowledge: Hands-on experience working with distributed systems and understanding the challenges of building scalable, fault-tolerant infrastructure.
2. Kubernetes & Containerization: Familiar with core Kubernetes concepts, with hands-on experience in developing custom controllers/operators.
3. Infrastructure as Code (IaC): Understand core principles of IaC and have working knowledge of tools such as Crossplane, Pulumi, Terraform, or similar.
4. Programming Proficiency: Can write clean, maintainable code in at least one language such as Go, Python, or similar.
5. Problem-Solving Mindset: Take initiative in identifying infrastructure bottlenecks and proposing actionable solutions, with a proactive and analytical approach.
6. Team Collaboration & Communication: Thrive in cross-functional environments, and communicate effectively to align technical decisions with team goals.
7. Educational Background: Hold a Bachelor's degree or higher in Computer Science, Software Engineering, or a related technical field.

• For SDE II software engineers, we expect you to have around 2 years or at least 2 years engineering experience. You should be able to solve coding problem and day-to-day tasks independently.

Bonus if you have:

1. Custom Kubernetes Operator Development: Hands-on experience building and maintaining custom Kubernetes controllers or operators to automate infrastructure workflows.
2. Service Mesh Expertise: Familiarity with Istio or other service mesh technologies for traffic management, observability, and security in microservices architectures.
3. GitOps Practices & Tooling: Working knowledge of GitOps principles and tools like ArgoCD or Flux for declarative infrastructure and application delivery.
4. Cloud & Kubernetes Certifications: Possess certifications in Kubernetes (CKA, CKAD) or major cloud platforms such as GCP, AWS, or Azure.
5. Contributions to CNCF Open Source Projects: Active participation in CNCF-affiliated open-source communities.