Senior Backend Engineer, Onboarding & Growth

airwallex (singapore) pte. ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Airwallex is seeking a Backend Engineer to design, build, and operate scalable microservices in Java/Kotlin. You’ll work on data pipelines, analytics platforms, and event‑driven architectures powering global payments infrastructure.

You’ll collaborate with cross‑functional teams, participate in code reviews, and enforce security and compliance across a high‑availability platform serving customers worldwide.

Qualifications

• Proficient in Java/Python/Go with strong CS fundamentals.
• Experience delivering enterprise-grade software with streaming data (Kafka).
• 5+ years in modern engineering practices (CI/QA).
• Strong OOP concepts and responsibility for scalable backend systems.
• Experience with domain-driven and event-driven architectures.

Responsibilities

• Design, architect, and maintain scalable backend microservices in Java/Kotlin or similar.
• Collaborate with data scientists and product managers on data pipelines and analytics platforms.
• Work with Frontend, Product, Design, and Marketing to translate requirements into backend solutions.
• Develop services supporting rapid A/B testing and real-time performance monitoring.
• Promote secure coding and compliance, with robust authentication/authorization.

Skills

Java

Python

Go

CI/CD

OOP

Event-driven design

Tools

Kafka

Job description

Airwallex is seeking a Backend Engineer to design, build, and operate scalable microservices in Java/Kotlin. You’ll work on data pipelines, analytics platforms, and event‑driven architectures powering global payments infrastructure.

You’ll collaborate with cross‑functional teams, participate in code reviews, and enforce security and compliance across a high‑availability platform serving customers worldwide.