Senior/ Staff Software Engineer, Core Banking (Relocate to Singapore)

Airwallex7 months ago

Location

SG - Singapore

Type

Full Time

Salary

SGD 120,000 – 180,000

Level

Senior

Role

Backend Engineer

Posted

Jul 24, 2025

Full TimeSenior

The role

Summary

Airwallex is seeking a Senior/Staff Software Engineer to join their Core Banking Platform team in Singapore, focusing on building scalable transaction engines and multi-currency wallet platforms. The role involves developing high-performance distributed systems that power Airwallex's global payments infrastructure, requiring 5+ years of experience with JVM-based programming (preferably Kotlin), distributed systems, and modern engineering practices.

What you'll do

Transaction Engine Development: Lead the development of cutting-edge transaction engines focused on scalability, financial accuracy, and adaptability

Multi-Currency Wallet Platform: Build and maintain a distributed multi-currency wallet platform providing precise financial oversight for client ledgers

Cross-Team Collaboration: Collaborate with product and engineering teams to ensure alignment between technical solutions and business objectives

AI-Enhanced Tooling: Innovate productivity-enhancing tools and processes, exploring AI opportunities to improve engineering practices and system observability

System Architecture: Design and implement high-throughput, low-latency, highly available distributed systems

Code Quality Assurance: Maintain high standards for code quality through testing, code reviews, and best practices implementation

What we look for

Technical

JVM ProgrammingStrong computer science fundamentals with JVM-based programming experience, preferably Kotlin

Distributed SystemsExperience with high throughput, low latency, highly available distributed systems

API DesignExperience in API design best practices and RESTful service development

Build ToolsMastery of Gradle, Maven, or other build automation tools

ContainerizationFamiliarity with Docker and Kubernetes cluster management

Network ProtocolsKnowledge of HTTP, TCP/IP protocol and REST specifications

Education

Computer Science BackgroundStrong computer science fundamentals or equivalent technical education

Experience

Software Engineering5+ years experience in modern engineering practices focused on continuous integration/delivery and quality engineering

Systems DesignProven experience in designing scalable distributed systems

Financial TechnologyExperience building high-accuracy financial systems and transaction processing platforms preferred

Skills

Required skills

Kotlin/JVM ProgrammingStrong proficiency in JVM-based languages, particularly Kotlin for backend development

Distributed Systems DesignExperience building high-throughput, low-latency distributed systems with high availability

API DevelopmentExpertise in designing and implementing RESTful APIs and microservices architecture

Container OrchestrationHands-on experience with Docker and Kubernetes for production deployments

Build AutomationProficiency with Gradle or Maven for JVM project build management

Nice to have

Reactive ProgrammingExperience with asynchronous programming using RxJava, Akka, Spring Reactor, or Vert.x

Event StreamingKnowledge of Kafka for real-time event processing and stream processing

Cloud PlatformsExperience with GCP, AWS, or Alicloud services including EC2, RDS, ELB, CloudFront

Monitoring & ObservabilityFamiliarity with operational tools like Splunk, New Relic, Datadog, Prometheus, ELK stack

Scala ProgrammingAdditional JVM language experience for functional programming approaches

Compensation & benefits

Salary

SGD 120,000 – 180,000 (annual)

Stock options

Available

Benefits

Relocation Support

Comprehensive relocation package to Singapore including visa sponsorship and moving assistance

Global Exposure

Work with a diverse team across 26 offices globally with opportunities for international collaboration

Professional Development

Continuous learning opportunities in a fast-growing fintech environment

Innovation Focus

Access to cutting-edge technology and AI tools to enhance productivity and problem-solving

Equal Opportunity

Inclusive workplace with commitment to diversity and equal opportunity employment

Interview process

1
Initial Screening — Phone or video call to discuss background, experience, and motivation for relocating to Singapore
2
Technical Assessment — Coding challenge focusing on distributed systems design, JVM programming, and system architecture
3
System Design Interview — Deep dive into designing scalable financial systems, transaction processing, and multi-currency platforms
4
Team Interview — Meet with Core Banking Platform team members to assess cultural fit and collaboration skills
5
Final Interview — Leadership interview covering career goals, relocation readiness, and long-term vision alignment