Senior Technical Account Manager

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 The Enterprise Business team partners with some of the most sophisticated and high-potential businesses in the world, helping them leverage Airwallex’s products to scale globally. We work closely with product, engineering, marketing and operations teams to solve complex problems for our customers and deliver long-term value. You’ll join a collaborative, ambitious and supportive team that thrives on ownership, customer impact and continuous improvement. What you'll do As a Technical Account Manager, you’ll be the trusted technical advisor for a portfolio of enterprise and high‑growth customers across Europe. You’ll sit at the intersection of product, engineering and commercial teams: guiding complex API integrations, troubleshooting issues, and using data to drive adoption, expansion and long‑term retention. You’ll combine deep technical understanding of APIs and payment flows with strong stakeholder management skills – from hands‑on engineers through to senior commercial leaders. This role is based in London, with a 3 days in office policy. Responsibilities: Act as the technical owner for a portfolio of customers integrating and scaling on Airwallex’s platforms (APIs, SDKs and system integrations), with a solid understanding of complex technical architectures. Build deep, hands‑on expertise in Airwallex’s payment, treasury, issuing and embedded finance products, advising customers on best‑practice integration patterns and optimisation opportunities. Diagnose and resolve complex technical and operational challenges across the stack, coordinating with Commercial, Engineering, Product and Compliance teams to drive timely, high‑quality outcomes. Serve as a strategic technical partner for enterprise clients: understand their roadmap and priorities, align Airwallex solutions to their goals, and proactively manage the post‑sale relationship to drive adoption, growth and retention. Plan and lead regular business and technical reviews (e.g. QBRs) with the commercial owner, surfacing insights on performance, risks and opportunities – and turning them into clear action plans. Own technical escalations for your accounts, providing calm, structured leadership through incidents and ensuring clear, executive‑ready communication throughout. Partner closely with Account Executives and Account Managers to identify and shape expansion opportunities (upsell and cross‑sell), contributing technical insight into account plans and commercial proposals. Use product usage data, commercial metrics and client health indicators to monitor account health, prioritise initiatives, and recommend strategies that improve outcomes for both customers and Airwallex. Stay current on the European payments and fintech landscape (including regulations such as PSD2 and local market nuances) and translate that knowledge into practical guidance for customers. Communicate complex technical concepts clearly and confidently to both technical and non‑technical stakeholders, adapting your style across cultur