Senior Software Engineer, Backend

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 2,000 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. Who Are We (About the Team) Join our Ecosystem team, a cross‑functional group of engineers and product partners building the platforms and integrations that connect Airwallex with the software our customers rely on every day. We own strategic accounting, marketplace, payment plugins, and open‑banking integrations, as well as the infrastructure that powers our public APIs that enabling third‑party partners to build on top of. You’ll work closely with backend, product, design, and go‑to‑market teams to ship secure, reliable experiences that simplify financial operations for businesses of all sizes and unlock new use cases on top of the Airwallex business account. What We Do (About the Role) As a member of our team, you will have the opportunity to work on cutting‑edge technologies and contribute to the growth and success of our company. You will collaborate with cross‑functional teams to design, develop, and maintain the ecosystem platform, build and integrate APIs to connect with external financial institutions and third‑party platforms(accounting, HR, ERP, marketplace, etc.), and develop scalable solutions to support our ecosystem strategy. You will also have the chance to work closely with product managers and designers to deliver innovative features and functionalities, as well as contribute to the technical roadmap and provide input on new technologies and best practices. If you are passionate about technology, innovation, and making a real impact in the fintech industry, we would love to have you join our team. Together, we will shape the future of finance and create meaningful solutions for businesses worldwide. Why Join Us? Innovative Environment : Be part of a forward‑thinking team that is shaping the future of financial technology through collaboration and innovation Impactful Work : Your contributions will directly influence the growth of our app marketplace, driving new business opportunities and enhancing customer experiences Collaboration and Growth : Work alongside talented professionals and engage with a diverse community of developers and partners. We offer opportunities for professional development and career advancement in a supportive and inclusive environment Cutting‑Edge Technology : Utilize the latest technologies and methodologies to build a secure and efficient platform that meets the evolving needs of our users and partners Responsibilities Collaborating with business/product teams to fully understand business needs, scenarios, and future development directions. Leading the planning, design, and implementation of customer requirements. Establishing and maintaining internal coding standards. Developing and maintaining integrations with major accounting platforms such as Xero, NetSuite, and QuickBooks on various use cases(bank feeds, expenses, invoice payment, etc.). Designing and developing features for payment plugins integrated with various e‑commerce platforms(Shopify, Shopline, and WooCommerce, etc.). Required Qualifications Bachelor's degree in Computer Science or a related field. 5+ years of experience in developing Internet applications, large financial systems, or e‑commerce platforms. Proficient in coding or scripting languages(Java/Kotlin/C++/Python, etc.). Deep familiarity with the standard library, idiomatic usage, and best practices of your primary programming languages. Preferred Qualifications Experience with Domain Driven Design (DDD). Exposure to microservice architectures, observability, and cloud‑native infrastructure (e.g., Docker, Kubernetes). Knowledge or experience of building plugins in NetSuite, Salesforce, or Shopify Domain knowledge on accounting or payments. Experience with integrating AI/LLM models into production systems. Join our Ecosystem Team and help us drive innovation If you are excited about leveraging technology to create impactful solutions and build thriving integrations, we invite you to collaborate with us in empowering businesses and developers. 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. 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. #J-18808-Ljbffr