Senior Network Engineer, Infrastructure

📋 Job Overview

Build the foundations of our new corporate network, and help design the team structure and size for the future. Maintain, design and deploy Airwallex's global cloud footprint, aligning network requirements to regional demands.

🏢 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.

🎯 The Role

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)

✅ Key Responsibilities

• Design, implement, and maintain highly available and secure production network infrastructure (LAN, WAN, VPN, Cloud) across multiple global data centres and cloud regions.
• Configure on-prem gateway/router/networking hardware globally, including mixed vendors in some locations
• Manage global connectivity over international leased lines and domestic internet connections
• Own the configuration and troubleshooting of complex network devices, including routers, switches, firewalls, load balancers, and cloud environments.
• Act as a first-responder or escalation point for complex network issues, running an incident through to completion and after-action reports.
• Collaborate with cross-functional teams (e.g., CorpSec, ProdSec, Engineering, Product, IT Engineering, Workplace, etc.) to integrate network solutions and support business initiatives.
• Work with IT Engineering, IT Support on troubleshooting network issues on endpoints, including basic IT operations support, building a core networking understanding among the team
• Develop and maintain comprehensive network documentation, including diagrams, configurations, and operational procedures.
• Evaluate and recommend new networking technologies and solutions to stay ahead of our business growth
• Participate in a global on-call rotation, providing primary response for production and infrastructure issues
• Flexible scheduling (as needed) to support the business and team initiatives -- i.e. participate in pre-scheduled network upgrades, work to minimise business disruption

📌 Required Qualifications

• CCNP / JNCIP level experience showing a strong networking foundation
• Demonstrated experience in a multi/mixed networking vendor environment (Juniper, Palo Alto, Cisco, Aruba, etc.) in a global company
• Experience and understanding of scripting languages eg: python, bash
• Event driven automation experience a plus
• Comfortable with declarative infrastructure tools, eg: terraform, git ci/cd pipelines
• Strong documentation habits and understanding of change control processes
• AWS and/or GCP experience, solid experience with both is a plus.
• Understanding of AI assisted workflows and use cases
• Solid understanding of command-line configuration of networking hardware and vendors (JunOS, IOS, etc.)
• Willingness to learn new technologies and skills
• Strong understanding of core BGP and route filtering principals
• Outcome oriented approach

⭐ Desirable Experience

• Experience in working with greater technical team outside of networking
• Ability to translate network technical to non-technical
• Strong knowledge of Linux Distributions
• Bachelor’s degree in Information Technology, Computer Science, or a related field, 5+ years of relevant experience in a similar role
• Strong, demonstrated written and verbal English communication skills,
• Experience using and understanding of other cloud infrastructure (Aliyun, azure, etc.)
• Experience working in all SaaS-based systems and applications
• Ability to move fast and urgently, making correct decisions and assumptions – sometimes without all the information
• Ability to assess the impact of changes and incidents and manage accordingly
• Familiarity with elastic connectivity providers
• Familiarity with datacentre providers, access and conduct require