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Staff Backend Engineer

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Airwallex

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Location:
Singapore , Singapore

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

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.

Job Responsibility:

  • 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
  • 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
  • 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
  • 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
  • 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

Requirements:

  • 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

Nice to have:

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

Additional Information:

Job Posted:
February 21, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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