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Airwallex

Staff Software Engineer Backend, Cards & Spend Management

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In-Office
San Francisco, CA, USA
In-Office
San Francisco, CA, USA

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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 150,000 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 1,700 of the brightest and most innovative people in tech across more than 37 locations around the globe. Valued at US$5.6 billion and backed by world-leading investors including Sequoia, Lone Pine, Greenoaks, DST Global, Salesforce Ventures and Mastercard, 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.

A key part of Airwallex’s suite of Business Account software, the Spend Management team is revolutionizing the way businesses issue credit cards and manage expenses for their employees. This team solves complex challenges around the growing demands of data and feature complexity in credit cards and expenses. We work at the intersection of our backend infrastructure and customer facing applications, and we build distributed systems that manage millions of transactions. 

What you will do:

While you are a technically strong engineer who is still passionate about writing code, your leadership skills, product thinking and business acumen are what really sets you apart. You will be accountable for the overall quality and delivery of multiple engineering streamlines within the Budget and Expense Management team. 

  • You will be the one clearing road blockers, providing context and guidance to the teams, and will know when to escalate.

  • This role will work with key stakeholders across the globe, and will provide technical leadership to Engineers in the US to define the tech vision of the business domain.

We would love to hear from you if you have:

  • 10+ years working in modern engineering practices focused on continuous integration and quality engineering.

  • Bachelors or Masters degree in Computer Science or a closely related field.

  • Strong computer science fundamentals. While we do not mind what language you have most recently been using. We are using Java or Kotlin, Spring / Spring Boot.

  • Expertise working on high volume distributed systems. Hands on experience with event driven architectures.

  • Experience with operational tooling such as New Relic, StatsD, Elk, Datadog, Prometheus
    Flexibility to work across global timezones.

Preferred attributes include:

  • GCP experience is preferred, but AWS (EC2, RDS, ELB, CloudFront etc) with docker and Kubernetes is great too.

  • Experience building for payments or expense tracking.

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.

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.

Compensation Range: $160.3K - $299K

Airwallex San Francisco, California, USA Office

Airwallex San Francisco, US Office

188 Spear Street’s superior location is two blocks from the Embarcadero, the promenade running along the SF waterfront, and offers exceptional views and convenience through its easy access to BART, Muni, ferries, the Transbay Terminal, the Bay Bridge and all major freeways.

Sales

This isn’t just another sales role. This is your chance to build the future of global banking with a team that’s built to win. We give top performers the autonomy, the product, and the support to achieve uncapped success.

AI Engineering

Our SF AI Engineering team at Airwallex is building production-grade AI that automates the hardest parts of global finance — from payments and onboarding to reconciliation, bookkeeping, and tax. Sitting on top of our proprietary global payments infrastructure and massive real-time transaction datasets, we design and ship vertical AI systems — from LLM-powered copilots and agentic workflows to fine-tuned models — that reach customers quickly and at scale. We’re a small, senior, zero-ego group with high ownership: engineers work end to end from problem framing and experimentation through to deployment and evals, using the right tool for the job to turn deep AI work into visible, shipped impact.

What you need to know about the San Francisco Tech Scene

San Francisco and the surrounding Bay Area attracts more startup funding than any other region in the world. Home to Stanford University and UC Berkeley, leading VC firms and several of the world’s most valuable companies, the Bay Area is the place to go for anyone looking to make it big in the tech industry. That said, San Francisco has a lot to offer beyond technology thanks to a thriving art and music scene, excellent food and a short drive to several of the country’s most beautiful recreational areas.

Key Facts About San Francisco Tech

  • Number of Tech Workers: 365,500; 13.9% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Google, Apple, Salesforce, Meta
  • Key Industries: Artificial intelligence, cloud computing, fintech, consumer technology, software
  • Funding Landscape: $50.5 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Sequoia Capital, Andreessen Horowitz, Bessemer Venture Partners, Greylock Partners, Khosla Ventures, Kleiner Perkins
  • Research Centers and Universities: Stanford University; University of California, Berkeley; University of San Francisco; Santa Clara University; Ames Research Center; Center for AI Safety; California Institute for Regenerative Medicine

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