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 1,800 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.

We hire successful builders with founder-like energy who want real impact, accelerated learning, and true ownership. You bring strong role-related expertise and sharp thinking, and you're motivated by our mission and operating principles. You move fast with good judgment, dig deep with curiosity, and make decisions from first principles, balancing speed and rigor.

You're humble and collaborative; turn zero‑to‑one ideas into real products, and you "get stuff done" end-to-end. You use AI to work smarter and solve problems faster. Here, you'll tackle complex, high‑visibility problems with exceptional teammates and grow your career as we build the future of global banking. If that sounds like you, let's build what's next.

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 senior software engineers, we expect you to have around 5 years or at least 5 years engineering experience. You should be able to demonstrate more in - depth understanding in the complexity of projects and the design of code systems.

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.

For SDE2 engineers, we expect you to have around 2 years or at least 2 years engineering experience. You should be able to solve problems related to coding and system design independently.

At Airwallex, you can make an impact in a rapidly growing, global fintech. We want you to share in our success, which is why you'll be offered a competitive salary plus valuable equity within Airwallex. We also like to ensure we create the best environment for our people by providing collaborative open office space with a fully stocked kitchen. We organise regular team-building events and we give our people the freedom to be creative.

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.

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. If you are approached by someone claiming to represent Airwallex, please verify with our team.