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Senior Backend Engineer, Spend Team (Cards)

Airwallex· Engineering
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Hybrid (SG - Singapore)Full-timePosted 11mo ago

About the role

Senior Backend Engineer responsible for designing and building scalable backend systems powering card issuance and expense management within the Cards team, with mentorship and technical leadership.

Responsibilities

  • Design and implement scalable, secure backend services that power the Cards product.
  • Contribute to the architecture and long-term technical vision of our backend systems.
  • Own end-to-end delivery of new features and improvements—from design to production.
  • Write high-quality, testable code with attention to reliability and maintainability.
  • Promote and uphold engineering best practices, including observability and API design.
  • Collaborate with cross-functional teams including product, infrastructure, and design.
  • Provide technical mentorship and support the growth of other engineers on the team.

Qualifications

  • Bachelor’s degree in Computer Science, Software Engineering, or a related field.
  • 5+ years of professional software engineering experience.
  • Hands-on experience designing and building backend systems and APIs in production.
  • Strong computer science fundamentals, including algorithms, data structures, and distributed systems.
  • Proficient in at least one backend language (e.g., Java, Kotlin, Go, Python).
  • Solid understanding of REST API design and backend frameworks (e.g., Spring Boot).
  • Experience working with cloud infrastructure (e.g., AWS, GCP) and container orchestration (e.g., Kubernetes).
  • Strong focus on performance, reliability, and code quality.

Skills

Required:Backend developmentREST API designCloud infrastructure
Nice to have:Observability
Last updated Oct 7, 2026. Interested? Apply on the company site.
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About Airwallex

Trusted Global Payments & Financial Platform

Grow your business faster with Airwallex - global business accounts, high speed transfers, multi-currency cards, online payments, embedded finance, and more.

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