Senior Software Engineer, Growth (Fintech)

TL;DR

Senior Software Engineer, Growth (Java/Kotlin/Fintech): Developing scalable backend microservices for user acquisition and market expansion with an accent on high-availability systems and data-driven experimentation. Focus on architecting robust A/B testing frameworks, optimizing onboarding funnels, and ensuring secure global payment infrastructure.

Location: Singapore

Company

Airwallex is a unified payments and financial platform for global businesses, providing integrated solutions for business accounts, payments, and treasury management.

What you will do

• Architect and maintain high-traffic microservices in Java/Kotlin, ensuring high availability and global scalability.
• Design data pipelines and event-driven architectures to support growth initiatives and data-driven decisions.
• Develop backend services for rapid A/B testing, feature toggles, and real-time performance monitoring.
• Collaborate with Frontend, Product, Design, and Marketing teams to translate business needs into technical solutions.
• Implement secure coding practices and maintain global regulatory compliance to protect user data.

Requirements

• Bachelor's degree in Computer Science or a related engineering field.
• 5+ years of experience in modern engineering practices, focusing on CI and quality engineering.
• Deep proficiency in Java/Kotlin and a strong understanding of OOP concepts.
• Proven experience with high-throughput, low-latency distributed systems and Domain Driven Design (DDD).
• Cloud experience with GCP (preferred) or AWS, including Docker and Kubernetes.
• Familiarity with observability tools such as Splunk, Grafana, and Prometheus.

Nice to have

• Experience with Spring/Spring Boot.
• Knowledge of data warehousing, customer segmentation, and analytics tools.
• Experience building customer-facing products integrated with AI and LLMs.
• Experience managing GTM (Go-To-Market) operations end-to-end.

Culture & Benefits

• High-ownership environment valuing founder-like energy and a "get stuff done" attitude.
• Collaborative culture with a strong emphasis on mentoring, knowledge sharing, and professional growth.
• Opportunity to solve complex, high-visibility problems within a fast-scaling global fintech company.
• Focus on first-principles thinking, agility, and the use of AI to optimize workflows.