Growth-Driven Backend Engineer (Java/Kotlin)

re-zoo-me; Singapore; Hybrid; SGD 180,000 - 260,000; Full time

Job summary

Airwallex is seeking a senior backend engineer to design, build, and scale microservices in Java/Kotlin, shaping high-traffic systems for a global payments platform. You will collaborate with data scientists, product managers, and design teams to translate requirements into robust, data-driven solutions that power growth.

You will champion secure coding, resilience, and performance, participate in architectural reviews, and help implement observability and post-launch experimentation to improve

Qualifications

• Bachelor degree or above in computer science or engineering related majors.
• 5+ years of experience in modern engineering practices focused on CI and quality engineering.
• Strong computer science fundamentals, solid understanding of OOP concepts.
• Experience domain driven design and event driven architectures.
• Deep working experience with high throughput / low latency / high available distributed systems.
• Cloud experience with GCP (preferred) or AWS (EC2, RDS, ELB, CloudFront, etc.) with Docker and Kubernetes.
• Familiarity with observability tooling such as Splunk, Grafana, and Prometheus.

Responsibilities

• Design, develop, and maintain scalable microservices in Java/Kotlin (or similar).
• Implement service communication, orchestration, and fault tolerance.
• Collaborate with data scientists and product managers to design data pipelines and analytics platforms.
• Ensure the data powering Growth initiatives is accurate, reliable, and easily accessible.
• Work closely with cross-functional teams-Front-End, Product, Design, and Marketing to translate business requirements into scalable backend solutions.
• Participate in architectural reviews, code reviews, and strategy sessions to elevate backend performance.
• Develop services that support rapid A/B testing, feature toggles, and real-time performance monitoring.
• Promote secure coding practices and global regulatory compliance.

Skills

Java/Kotlin

OOP concepts

Data-driven

Cloud computing

Observability

Education

Bachelor degree in CS or Engineering

Tools

Docker

Kubernetes

Spring Boot

GCP

Prometheus

Grafana

Splunk

Job description

Airwallex is seeking a senior backend engineer to design, build, and scale microservices in Java/Kotlin, shaping high-traffic systems for a global payments platform. You will collaborate with data scientists, product managers, and design teams to translate requirements into robust, data-driven solutions that power growth.

You will champion secure coding, resilience, and performance, participate in architectural reviews, and help implement observability and post-launch experimentation to improve