Senior Software Engineer, Infrastructure

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 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.

Attributes We Value

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.

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, where we're constantly pushing the boundaries of what's possible in the financial technology space.

As the engineering organization matures, the infrastructure teams are the key to Airwallex's ability to build a next-generation geo-distributed, disaster-resilient infrastructure which spans multiple continents.

What you’ll do

What you do here will impact the world. The Airwallex Cloud Infra team is a group of highly skilled, innovative, and collaborative professionals dedicated to creating and maintaining a cutting-edge, secure, and scalable infrastructure that supports our cross-border payment solutions.

The team brings together experts in Kubernetes, service mesh, cloud platforms, and core services, all working seamlessly to ensure the highest levels of performance, reliability, and security. The Cloud Infrastructure team is pivotal to Airwallex's mission to empower businesses worldwide by providing a robust and efficient financial technology platform.

This role is based in Singapore.

Responsibilities:

• 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.

• 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.

• 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.

• Contribute to Incident Response & Operations: Participate in on-call rotations to troubleshoot and resolve infrastructure issues, ensuring minimal downtime and high availability across environments.

• 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.

Who you are

We're looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.

Qualifications:

• Distributed Systems Knowledge: Hands-on experience working with distributed systems and understanding the challenges of building scalable, fault-tolerant infrastructure.

• Kubernetes & Containerization: Familiar with core Kubernetes concepts, with hands-on experience in developing custom controllers/operators.

• Infrastructure as Code (IaC): Understand core principles of IaC and have working knowledge of tools such as Crossplane, Pulumi, Terraform, or similar.

• Programming Proficiency: Can write clean, maintainable code in at least one language such as Go, Python, or similar.

• Problem-Solving Mindset: Take initiative in identifying infrastructure bottlenecks and proposing actionable solutions, with a proactive and analytical approach.

• Team Collaboration & Communication: Thrive in cross-functional environments, and communicate effectively to align technical decisions with team goals.

• Educational Background: Hold a Bachelor's degree or higher in Computer Science, Software Engineering, or a related technical field.
  

Preferred qualifications:

• Custom Kubernetes Operator Development: Hands-on experience building and maintaining custom Kubernetes controllers or operators to automate infrastructure workflows.

• Service Mesh Expertise: Familiarity with Istio or other service mesh technologies for traffic management, observability, and security in microservices architectures.

• GitOps Practices & Tooling: Working knowledge of GitOps principles and tools like ArgoCD or Flux for declarative infrastructure and application delivery.

• Cloud & Kubernetes Certifications: Possess certifications in Kubernetes (CKA, CKAD) or major cloud platforms such as GCP, AWS, or Azure.

• Contributions to CNCF Open Source Projects: Active participation in CNCF-affiliated open-source communities.
  

  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.