Senior Software Engineer, Issuing Platform

Airwallex2 months ago

Location

SG - Singapore

Type

Full Time

Level

Senior

Role

Backend Engineer

Posted

Jan 14, 2026

Full TimeSenior

The role

Summary

Senior Software Engineer role at Airwallex's Issuing Platform team building mission-critical card issuing, transaction processing, and settlement systems at global scale. Requires 5+ years backend experience with Java/Kotlin/Go/Python, distributed systems expertise, and cloud platform knowledge (GCP/AWS).

What you'll do

Backend Systems Development: Design, build, and operate backend services that support card issuing, transaction processing, and settlement systems

Scalable Architecture Design: Contribute to the design of scalable, resilient systems in a distributed environment

High-Quality Code Development: Write high-quality, well-tested code with a strong focus on maintainability and operational readiness

Code Review Participation: Participate actively in code reviews, design discussions, and incident retrospectives

RESTful API Development: Design and implement RESTful APIs used by internal teams and external customers

API Documentation and Integration: Ensure APIs are reliable, well-documented, and easy to integrate with

Cross-Functional Collaboration: Work closely with engineers, product managers, and stakeholders across regions to deliver outcomes

Technical Mentorship: Mentor peer engineers through code reviews, pairing, and technical guidance

System Reliability: Contribute to system reliability through monitoring, alerting, and on-call participation

Performance Optimization: Identify and address performance, scalability, and resiliency issues proactively

What we look for

Technical

Backend Programming LanguagesStrong backend development experience using Java, Kotlin, Go, or Python

Computer Science FundamentalsSolid computer science fundamentals and understanding of object-oriented design

Distributed SystemsExperience building and operating distributed systems in production

Event-Driven ArchitectureHands-on experience with event-driven architectures, for example Kafka

RESTful API DesignExperience designing and building RESTful APIs

Cloud PlatformsCloud experience with GCP (preferred) or AWS, including Docker and Kubernetes

Observability ToolsFamiliarity with observability tooling such as Splunk, Grafana, Prometheus, or similar

Education

Bachelor's DegreeBachelor degree or above in computer science or software engineering related majors

Experience

Professional Experience5+ years of professional software engineering experience

Production SystemsExperience building and operating distributed systems in production environment

Skills

Required skills

Backend DevelopmentStrong proficiency in Java, Kotlin, Go, or Python for backend systems development

Distributed SystemsExperience building and operating distributed systems in production environments

Object-Oriented DesignSolid understanding of object-oriented programming principles and design patterns

Event-Driven ArchitectureHands-on experience with event streaming platforms like Kafka

RESTful API DevelopmentExperience designing and implementing scalable RESTful APIs

Cloud PlatformsPractical experience with GCP (preferred) or AWS cloud services

ContainerizationExperience with Docker and Kubernetes for application deployment

ObservabilityFamiliarity with monitoring tools like Splunk, Grafana, Prometheus

Nice to have

Fintech ExperienceExperience in fintech, payments, or other high-reliability domains

JVM FrameworksExperience with JVM-based frameworks such as Spring or Spring Boot

Financial SystemsUnderstanding of card issuing, transaction processing, or settlement systems

High-Throughput SystemsExperience with low-latency, high-availability transaction processing systems

Compensation & benefits

Benefits

Global Career Growth

Opportunity to work with over 2,000 innovative professionals across 26 offices globally

High-Impact Work

Work on mission-critical systems that power financial services for 200,000+ businesses worldwide

Learning and Development

Accelerated learning opportunities in fintech and global payments industry

Equity Participation

Opportunity to be part of a US$8 billion valued company backed by leading investors

Diverse and Inclusive Environment

Equal opportunity employer committed to diversity and inclusion

Innovation Focus

Work with cutting-edge technology and AI tools to solve complex problems

Technical Excellence

Collaborate with exceptional teammates on high-visibility, complex engineering challenges

Interview process

1
Application Review — Initial screening of resume and application materials focusing on backend development experience and technical qualifications
2
Recruiter Phone Screen — 30-minute conversation with talent acquisition team to discuss background, motivation, and role alignment
3
Technical Phone Interview — 1-hour technical interview covering algorithms, data structures, and system design fundamentals
4
System Design Interview — 1-hour session focusing on distributed systems architecture, scalability, and design trade-offs relevant to financial platforms
5
Coding Interview — 1-hour hands-on coding session in preferred language (Java/Kotlin/Go/Python) with emphasis on backend development patterns
6
Team Fit Interview — 45-minute behavioral interview with engineering team members to assess collaboration, technical leadership, and cultural alignment
7
Final Interview — 30-45 minute conversation with senior engineering leadership to discuss technical vision, career goals, and mutual fit