Senior Network Engineer, Infrastructure

Airwallex; United States; On-site; USD 67,000 - 96,000; Full time

Job summary

Airwallex is seeking a seasoned Network Engineer to design, deploy, and maintain LAN, WAN, VPN and cloud networks from its Seoul base. You will operate global connectivity, troubleshoot routers, switches, and security appliances, and work in a mixed-vendor environment to ensure high availability of our financial infrastructure.

The role requires 5+ years in production, strong BGP/VPN experience, Linux scripting, and familiarity with GCP/AWS networking.

Qualifications

• Five+ years of hands-on network engineering in production.
• Experience with BGP, VPNs, network troubleshooting and change management.
• GCP or AWS networking; GCP preferred.
• Experience with multiple networking vendors (e.g., Juniper, Cisco, Palo Alto, Aruba, Arista).
• Linux and scripting with Python or Bash.
• Terraform, Git or CI/CD automation is a plus.
• Strong written and verbal English communication.
• Experience in banking/fintech or regulated, high-availability environments preferred.
• Networking certifications (CCNA, JNCIA, HCIA or equivalent) preferred.
• Stable employment history with production systems ownership.

Responsibilities

• Design, deploy and maintain LAN, WAN, VPN and cloud networks.
• Operate global connectivity including leased lines and data-centre networks.
• Configure and troubleshoot routers, switches, firewalls, load balancers and cloud networking services.
• Manage mixed-vendor environments (Juniper, Cisco, Palo Alto, Aruba, Arista).
• Work with BGP, route filtering, subnetting, IPsec VPNs and security controls.
• Respond to network incidents, lead troubleshooting and post-incident reviews.
• Support network projects, upgrades and change activities with minimal disruption.
• Partner with Security, Engineering, IT and Workplace teams on network solutions.
• Maintain network diagrams, runbooks and operational procedures.
• Participate in a global on-call rotation.

Skills

BGP

VPN

Network troubleshooting

Linux scripting

Python

Git/CI/CD automation

English communication

Networking fundamentals (CCNA level)

Vendor experience (Juniper/Cisco/Palo 

Education

CCNA

JNCIA

HCIA

Tools

Juniper

Cisco

Palo Alto

Aruba

Arista

Terraform

Git

CI/CD

Job description

About Airwallex

Airwallex is the AI-native financial operating system for a real-time, intelligent economy. More than 676,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own.

We started in Melbourne in 2015 to build the infrastructure global commerce runs on. We're the regulated backbone behind global payments: not by accident, but by design. A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.

We're co-headquartered in San Francisco and Singapore, with more than 2,300 people across 27 offices. We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do. Read our operating principles to see it in full.

About the team

As the engineering organization matures, the infrastructure teams are key to Airwallex’s ability to build a globally distributed platform, increase engineer productivity, and ensure effective use of resources.

Our team works 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.

This role is based in Seoul, South Korea.

Address: Units 1006, Partners Tower, 83 Gasan digital 1-ro, Geumcheon-gu, Seoul, Republic of Korea, 08589 서울 금천구 가산디지털1로 83, 1006 호(가산동, 파트너스타워)

What you’ll do

• Design, deploy and maintain LAN, WAN, VPN and cloud networks.

• Operate global connectivity, including leased lines, internet connections and data‑centre networks.

• Configure and troubleshoot routers, switches, firewalls, load balancers and cloud networking services.

• Manage mixed‑vendor environments such as Juniper, Cisco, Palo Alto, Aruba or equivalent platforms.

• Work with BGP, route filtering, subnetting, IPsec VPNs and network security controls.

• Respond to network incidents, lead troubleshooting and complete post‑incident reviews.

• Support network projects, upgrades and change activities with minimal business disruption.

• Partner with Security, Engineering, IT and Workplace teams on network solutions.

• Maintain network diagrams, documentation, runbooks and operational procedures.

• Participate in a global on‑call rotation.

Who you are

• 5+ years of hands‑on network engineering experience in a production environment.

• Strong routing and switching fundamentals, equivalent to CCNA level or above.

• Experience with BGP, VPNs, network troubleshooting and change management.

• Practical experience with GCP or AWS networking; GCP experience is preferred for this role.

• Experience with at least two networking vendors, such as Juniper, Cisco, Palo Alto, Aruba or Arista.

• Working knowledge of Linux and scripting with Python or Bash.

• Experience with Terraform, Git or CI/CD‑based infrastructure automation is a plus.

• Strong written and verbal English communication skills.

• Experience in banking, fintech or other regulated, high‑availability environments is highly preferred.

• A relevant networking certification such as CCNA, JNCIA, HCIA or equivalent is preferred.

• A stable employment history with sustained ownership of production systems.

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.