Senior Software Engineer - Growth Team

About Airwallex

Airwallex is a unified payments and financial platform serving global businesses with integrated solutions for business accounts, payments, spend management, treasury, and embedded finance at scale. Based in Melbourne, it supports over 250,000 businesses worldwide, including major clients such as Brex, Navan, Qantas, and SHEIN. Valued at US$11 billion, the company operates across 27 offices globally with a team of over 2,300 technology professionals.

Team Overview

The Growth team at Airwallex drives user acquisition and strategic market expansion through data-driven decisions and technological innovation. They focus on optimizing user funnels, onboarding processes, and scalable architecture to support high traffic and global marketing integration, crucial for the company’s global expansion ambitions.

Role Summary

• Design and develop scalable microservices using Java/Kotlin to support high-availability systems.
• Implement service communication, orchestration, and fault-tolerance best practices.
• Work alongside data scientists and product managers to create analytics platforms, data pipelines, and event-driven architectures ensuring data accuracy and reliability.
• Collaborate with cross-functional teams such as Frontend, Product, Design, and Marketing translating business needs into backend solutions.
• Engage in code reviews, architectural discussions, and strategy planning to enhance backend performance and quality.
• Build services that facilitate rapid A/B testing, feature toggles, and real-time monitoring to improve engagement and conversions.
• Integrate secure coding practices to protect user data and maintain compliance with global regulations by identifying vulnerabilities and enforcing authentication and authorization protocols.

Candidate Profile

• 5+ years of software development experience with strong proficiency in Java/Kotlin and modern engineering best practices.
• Robust knowledge of object-oriented programming, domain-driven design, and event-driven system architectures.
• Practical expertise in building and maintaining high-throughput, low-latency distributed systems in cloud environments (preferably GCP or AWS with Docker and Kubernetes).
• Familiarity with monitoring and observability tools like Splunk, Grafana, and Prometheus.
• Strong analytical skills with a data-driven approach and empathy toward end users to create impactful and intuitive products.
• Collaborative mindset focused on knowledge sharing, mentorship, and fostering a positive team culture.
• Adaptable, proactive, and efficient with a strong ownership mentality and excellent task prioritization skills.

Preferred Skills

• Experience with Spring framework including Spring Boot.
• Background in go-to-market operational solutions and customer segmentation analytics.
• Exposure to building AI and large language model powered internal or customer-facing products.

Minimum Qualifications

• Bachelor’s degree or higher in Computer Science, Engineering, or related field.

Additional Information

Applicant Security Policy: Airwallex will never request bank details, sensitive identification numbers, or payments during the hiring process. Correspondence will exclusively come from an @airwallex.com email. Applications should only be submitted through official channels. The company does not accept unsolicited resumes from recruiters and does not pay fees without prior arrangement.

Equal Opportunity: Airwallex is committed to equal opportunity employment valuing diversity. Hiring decisions are based solely on merit without discrimination on legally protected statuses. Candidates requiring accommodation for disabilities or special needs are encouraged to notify Airwallex.