Senior Cloud Infrastructure Engineer (Cloud Networking)

Airwallex; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Airwallex is building a globally distributed financial platform and seeks an engineer to design and operate cloud networks. You will architect AWS/GCP networks, implement IaC with Terraform, and enable secure cross‑cloud connectivity across regions. The role emphasizes reliability, security, and on‑call readiness.

Ideal candidates have AWS design experience, Terraform expertise, and strong networking fundamentals, with multi‑cloud exposure and scripting skills for automation.

Qualifications

• Solid AWS design experience at scale with VPC, TGW, Direct Connect and network security.
• Proficiency in Terraform or equivalent IaC tooling for provisioning cloud networks.
• GCP networking concepts such as Shared VPC and Cloud Router; multi‑cloud exposure.
• Familiarity with Linux, scripting (Python or Bash) and CI/CD pipelines.
• Strong knowledge of routing, TCP/IP, BGP, subnetting and network troubleshooting.

Responsibilities

• Design, build, and optimize highly available multi‑region AWS/GCP network architectures.
• Automate cloud network infrastructure using Terraform in CI/CD pipelines.
• Manage hybrid and cross‑cloud connectivity with BGP, IPsec, and routing.
• Provide observability, incident escalation, and participate in a global on‑call rotation.
• Collaborate with Security, DevOps, and Platform teams to land secure Landing Zones.

Skills

Cloud & DevOps

AWS design

GCP networking

CI/CD pipelines

Linux scripting

Networking fundamentals

Education

Networking certifications (Associate-level)

Tools

Terraform

Job description

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 250,000 businesses worldwide – including Brex, 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 2,300 of the brightest and most innovative people in tech across 27 offices around the globe. Valued at US$11 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. 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

As Airwallex’s engineering organization matures, the Infrastructure team builds and scales our globally distributed financial platform. We focus on high availability, security, and cloud scalability while empowering developer productivity across global regions.

What You’ll Do

• Cloud Network Architecture: Design, build, and optimize highly available, multi‑account, and multi‑region AWS and GCP cloud network architectures (Layer 3 routing, Transit Gateway, Shared VPC, Cloud Router, Direct Connect).

• Infrastructure as Code (IaC): Automate and manage global cloud network infrastructure using Terraform through Git‑driven CI/CD pipelines.

• Hybrid & Cross‑Cloud Connectivity: Manage BGP routing, IPsec VPNs, and dynamic cloud routing between public clouds (AWS/GCP), regional POPs, and external banking partners under strict financial regulatory requirements.

• Operational Excellence & Observability: Serve as an escalation point for complex cloud networking issues, improve network visibility, and participate in a global on‑call rotation.

• Cross‑functional Collaboration: Work closely with Security, DevOps, and Platform teams to build secure Landing Zones and automated network controls.

Requirements

1. Cloud & DevOps Experience

• Solid AWS Design Experience: hands‑on experience designing and operating AWS network environments at scale (VPC, TGW, Route Tables, Direct Connect, AWS Network Firewall).

• Infrastructure as Code: Proficiency in Terraform (or equivalent IaC tools) for provisioning and automating cloud network components.

• GCP / Multi‑Cloud Exposure: Practical experience with GCP networking concepts (Shared VPC, Cloud Router) or multi‑cloud environments.

• DevOps Alignment: Familiarity with Linux distributions, scripting (Python or Bash), and CI/CD pipelines.

2. Networking Fundamentals

• Networking Fundamentals: Strong knowledge of core routing and switching, subnetting, TCP/IP, and BGP dynamic routing principles.

• Certification / Experience: Holds or has equivalent hands‑on experience equal to Associate‑level networking certifications (e.g., CCNA, JNCIA‑Junos, HCIA, Aruba ACA, Network+, or AWS Certified Advanced Networking - Specialty / GCP PCNE).

Nice to Haves

• Experience in Fintech, local banking, or high‑concurrency/high‑availability financial networks with strict information security requirements.

• Familiarity with GCP‑preferred architectures

• Advanced certifications (CCNP/JNCIP or AWS Certified Advanced Networking - Specialty).

• AI‑assisted workflows and modern operational tools integration.

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.