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Senior Backend Engineer

Airwallex

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Location:
Australia , Melbourne

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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:

Join the Financial Markets team to power the core FX and liquidity technology at Airwallex. Build data-driven, precise solutions that keep Airwallex running at speed.

Job Responsibility:

  • Design, build and own backend services for FX pricing, execution and risk management
  • Contribute to the evolution of our FX platform architecture (microservices, event-driven workflows, Kafka, gRPC, SQL/NoSQL datastores)
  • Implement and maintain robust controls for pricing, limits, risk, reconciliation and monitoring
  • Work end-to-end on features: from requirements and solution design, to implementation, automated testing, deployment and operational runbooks
  • Collaborate with Product, Treasury, Risk, Data and other engineering teams to design APIs and data contracts
  • Instrument services with metrics, logs and tracing
  • Participate in code reviews, technical design discussions and knowledge-sharing sessions
  • mentor less-experienced engineers
  • Take part in our on-call rotation

Requirements:

  • 5+ years of experience building and operating backend systems in production
  • Strong programming experience in one or more JVM languages (e.g. Kotlin, Java) or a comparable backend stack
  • Solid understanding of distributed systems fundamentals: concurrency, data consistency, idempotency, retries, backoff, and failure modes in networked services
  • Experience designing and working with REST and/or gRPC APIs, and persistence layers using relational databases (e.g. PostgreSQL) and/or key-value stores
  • Proficiency with event-driven architectures and message brokers/streams (e.g. Kafka or similar)
  • Strong focus on testing and quality: unit, integration and contract tests
  • familiarity with CI/CD pipelines
  • Good grasp of observability: metrics, logging, tracing and alerting
  • Clear written and verbal communication skills
What we offer:
  • Competitive salaries
  • Comprehensive health benefits
  • Flexible work environment
  • Work-life balance

Additional Information:

Job Posted:
February 21, 2026

Employment Type:
Fulltime
Work Type:
On-site work
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