Senior Network 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 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 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 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. 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 Who you are 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 Preferred qualifications: 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 requirements. A builder mindset a strong plus Experience with IPSEC VPN setup and troubleshooting Experience with fintech, finance and adjacent high availability networks 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.