Staff Backend Engineer, Issuing Platform - Singapore - Airwallex

    Airwallex
    Airwallex Singapore

    3 days ago

    Accounting / Finance
    Description
    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.

    About The Team

    The issuing engineering team at Airwallex builds and operates core systems for card issuing, transaction processing, and settlement at global scale. The team owns mission-critical platforms that underpin Airwallex's issuing products, with a strong focus on reliability, scalability, and compliance. Key areas of ownership include:
    • Cards: Customer-facing and internal systems for card lifecycle management, controls, and configuration.
    • Transactions: A global, high-throughput transaction processing platform designed for low latency, high availability, and resiliency.
    • Settlement: Clearance, settlement, and dispute workflows that ensure financial accuracy and scheme compliance.

    What you'll do

    As a staff software engineer, you are a senior individual contributor responsible for designing, building, and evolving the most technically complex parts of the issuing platform.

    While you do not have direct reports, your impact comes from deep technical ownership, architectural leadership, and raising the engineering bar across teams through design, mentorship, and example.

    This role is based in Singapore.

    Responsibilities

    Technical ownership and execution
    • Design, build, and operate highly reliable, scalable systems that powers real-time card transactions
    • Take end-to-end ownership of complex problem spaces, from system design through production rollout and long-term evolution.

    Architecture and system design
    • Lead the design of distributed, event-driven systems with strong guarantees around correctness, performance, and resiliency.
    • Drive architectural improvements that reduce complexity, improve operability, and enable future product growth.

    Engineering excellence
    • Set a high bar for code quality, testing, observability, and operational readiness.
    • Identify and remove technical bottlenecks that slow down teams or introduce systemic risk.

    Cross-team technical leadership
    • Influence technical direction across multiple teams through design reviews, RFCs, and hands-on collaboration.
    • Mentor senior engineers and help shape engineering best practices without formal people management responsibilities.

    Platform and infrastructure evolution
    • Contribute to the evolution of core infrastructure and shared platform capabilities to improve developer productivity and system reliability.
    • Evaluate new technologies pragmatically and guide their adoption where they deliver clear value.

    Who you are

    We are looking for senior engineers with deep technical expertise and a strong track record of impact as an individual contributor.

    Minimum Qualifications
    • 8+ years of professional software engineering experience, with sustained impact as a senior or staff-level individual contributor.
    • Bachelor's degree in Computer Science, Software Engineering, or a related field.
    • Strong proficiency in backend development using languages such as Java, Kotlin, Go, or Python.
    • Deep experience designing and delivering large-scale, distributed systems in production.
    • Strong computer science fundamentals and solid understanding of object-oriented design.
    • Hands-on experience with event-driven and streaming architectures, for example Kafka.
    • Proven experience designing and operating RESTful APIs at scale.
    • Experience with domain-driven design and event-driven architectures.
    • Cloud experience with GCP (preferred) or AWS, including Docker and Kubernetes.
    • Familiarity with observability tooling such as Splunk, Grafana, and Prometheus.
    • Demonstrated ability to mentor engineers and influence technical direction through design and execution rather than authority.

    Preferred Qualifications
    • Experience in fintech, payments, or other regulated financial domains.
    • Deep experience with JVM-based ecosystems, including Java or Kotlin with Spring or Spring Boot.

    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 @ email address. Please apply only through 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.
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