Senior Software Engineer, Notification Platform

About the role

The Notification Platform engineering team at Airwallex builds and operates the core infrastructure that powers customer and internal communications across the company. The team owns the platform responsible for delivering notifications reliably, at scale, and across multiple channels, enabling product teams to engage users with the right message at the right time. As a centralized platform team, Notification Platform bridges the gap between business needs and architectural excellence. The team builds and evolves a cloud-native platform using modern technologies and design patterns, including reactive programming, workflow orchestration, distributed systems, and advanced gateway integrations. The platform supports complex, organization-wide communication use cases and provides the foundations that product teams rely on to deliver critical messaging experiences. The team operates a highly I/O-intensive and mission-critical system that serves the entire organization. This requires strong engineering craftsmanship, operational discipline, and a continuous innovation mindset. In addition to building and running core platform capabilities, the team also leads comprehensive evaluations of strategic solutions that shape notification architecture and platform direction across Airwallex.

Responsibilities

• As a senior software engineer, you are a strong individual contributor who takes ownership of complex components and delivers high-quality systems in collaboration with your team.
• While you do not have direct reports, your impact will come from technical execution, sound design decisions, and helping raise the quality and effectiveness of the team through example and collaboration.
• This role is based in Singapore.
• Design, develop & maintain a resilient, high-throughput, low-latency Notification Platform to deliver messages (SMS, Email, Push) to our customers worldwide.
• Maintain a high architecture standard & craftsmanship through an Event Driven Architecture requiring high scalability, traceability & automation.
• Identify new opportunities to engage adopters through delightful adoption experience and extension over various channels, such as WhatsApp and inbox notifications.
• Engage with Product, Engineering, and Design teams across Airwallex's global offices, fostering effective communication through fast pace business transformation & providing data insights.
• Troubleshoot production issues across different levels of the stack.
• You'll work hand-in-hand with the Issuing Platform team (powering Airwallex Cards & Transactions) as one of the primary consumers of your Platform.

Requirements

• We're looking for people who meet the minimum qualifications for this role. The preferred qualifications are great to have, but are not mandatory.
• Bachelor degree or above in computer science or engineering related majors with sophisticated level knowledge in designing and delivering of Enterprise Grade software systems.
• Experienced in Software Engineering with strong capabilities in modern programming languages like Java, Python or Go.
• 5+ years of experience in modern engineering practices focused on large-scale, low-latency, high-throughput systems.
• At least 3 years of experience building distribu

Additional Information

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 200,000 businesses worldwide - including Brex, Rippling, 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 2,200 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 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.

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