Senior Backend Engineer — AI-Driven Growth Systems

Airwallex; United States; Hybrid; USD 140,000 - 200,000; Full time

Job summary

Airwallex is hiring a Senior Backend Engineer in Seattle to own core backend systems driving growth across acquisition, activation, conversion, retention, and expansion.

You will design scalable architectures, partner with Product, Data Science, Frontend, Design, and Marketing to translate complex problems into reliable technical solutions while maintaining data privacy and regulatory compliance.

Qualifications

• Significant experience designing, building, and operating production backend systems with ownership from design to reliability.
• Strong fundamentals in CS, OO design, distributed systems, and event-driven architectures.
• Proficiency in high-throughput, low-latency services with scalable architectures.
• Experience with cloud infrastructure (GCP/AWS) and containerized deployments.

Responsibilities

• Own architecture and delivery of scalable backend systems powering growth initiatives.
• Design and evolve high-throughput, low-latency distributed services.
• Turn signals into reliable data products and intelligent flows.
• Collaborate with product, data science, frontend, design, and marketing to solve business problems.

Skills

Backend systems design

Distributed systems

Java/Kotlin

Cloud infrastructure

Observability

Cross-functional collaboration

Docker

Kubernetes

Spring/Spring Boot

Tools

Docker

Kubernetes

Grafana

Prometheus

Splunk

Job description

Airwallex is hiring a Senior Backend Engineer in Seattle to own core backend systems driving growth across acquisition, activation, conversion, retention, and expansion.

You will design scalable architectures, partner with Product, Data Science, Frontend, Design, and Marketing to translate complex problems into reliable technical solutions while maintaining data privacy and regulatory compliance.