Senior Software Engineer, Yield

Airwallex4 months ago

Location

AU - Sydney

Type

Full Time

Level

Senior

Role

Backend Engineer

Posted

Oct 21, 2025

Full TimeSenior

The role

Summary

Join Airwallex's Yield team as a Senior Software Engineer to build high-integrity backend systems for their fast-growing investment product that helps businesses earn returns on idle cash. This role involves designing and maintaining mission-critical financial infrastructure including reconciliation controls and investment ledgers, working with modern technologies like Kotlin, Temporal, and Kafka in a cloud environment.

What you'll do

Technical Architecture: Contribute to the architecture and long-term technical vision of backend systems, helping define engineering strategy and framework selection for the Yield squad

End-to-End Delivery: Own the complete delivery of core investment workflows, including client signup, investment, and redemption processes from design to production

Financial Infrastructure: Build and maintain mission-critical financial infrastructure such as reconciliation controls, unit registries, and investment ledgers

Code Quality: Write high-quality, testable code with focus on reliability and maintainability, ensuring seamless integration with external investment providers

Engineering Standards: Promote and uphold engineering best practices with emphasis on observability, API design, and robust integration rails

Cross-Functional Collaboration: Collaborate with Product, Infrastructure, and Design teams to ensure optimal product experience for businesses

What we look for

Technical

Backend DevelopmentMastery of backend technologies with experience in distributed systems

Distributed SystemsExperience solving distributed systems challenges including scalability, consistency, and latency

Cloud TechnologiesHands-on experience with GCP or AWS, including Docker and Kubernetes

Testing & QualityExperience with automated testing and involvement in quality control processes

Observability ToolsExperience integrating with observability tooling such as Splunk, NewRelic, Prometheus, Grafana

Education

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

Experience

Professional Experience5+ years of professional software engineering experience

Backend SystemsProven experience in building and maintaining backend systems at scale

Financial SystemsExperience with financial or high-integrity systems preferred

Skills

Required skills

Kotlin/Vert.xPrimary development stack for backend services

Distributed SystemsSolving scalability, consistency, and latency challenges

Cloud PlatformsGCP or AWS with containerization experience

Testing PracticesAutomated testing and quality control processes

ObservabilityMonitoring and observability tool integration

API DesignRESTful API design and integration patterns

Nice to have

Financial SystemsExperience with financial or high-integrity systems

KafkaEvent streaming and message processing

TemporalWorkflow orchestration and complex business processes

MicroservicesMicroservices architecture and patterns

Investment ProductsUnderstanding of investment and treasury products

Compensation & benefits

Benefits

Global Impact

Work on products serving over 200,000 businesses worldwide including major companies like Brex, Rippling, and Qantas

Career Growth

Exceptional opportunities for innovation and career growth in one of Airwallex's fastest-growing business units

Startup Environment

Operate like a startup within a startup with unparalleled opportunities for innovation

Global Expansion

Be part of aggressive global expansion initiatives

Cutting-Edge Technology

Work with modern technology stack and AI tools to solve complex problems

Equal Opportunity

Proud equal opportunity employer valuing diversity and inclusion

Interview process

1
Initial Screening — Phone or video call with talent acquisition to discuss background and interest
2
Technical Assessment — Coding challenge or technical screen focusing on backend development and distributed systems
3
System Design Interview — Architecture discussion covering scalability, reliability, and financial system design
4
Behavioral Interview — Culture fit assessment and discussion of past experiences with team members
5
Final Interview — Meet with engineering leadership and potentially cross-functional stakeholders
6
Reference Check — Professional reference verification and background check