Staff Software Engineer (Fintech)

TL;DR

Staff Software Engineer (Fintech): Building and refining high-performance application infrastructure to power global financial services with an accent on distributed systems, API gateway management, and scalability. Focus on solving complex organization-wide technical challenges, optimizing system performance, and driving long-term architectural strategy.

Location: Singapore

Company

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

What you will do

• Develop and refine cutting-edge application infrastructure to eliminate technical bottlenecks and accelerate innovation.
• Tackle complex, high-scale challenges using reactive programming, distributed systems, and advanced gateway solutions.
• Drive strategic technological excellence by evaluating emerging solutions and guiding long-term architectural decisions.
• Optimize global traffic management, including north-south and east-west API gateways.
• Enhance intelligent search platforms and orchestrate efficient notification delivery systems.
• Automate complex workflows to improve developer productivity and system reliability.

Requirements

• Strong proficiency in backend programming languages such as Java, Go, Rust, or Python.
• Deep expertise in infrastructure and cloud services (AWS, GCP, Aliyun) including Kubernetes and Docker.
• Proven experience with database and storage systems like PostgreSQL, Redis, and Elasticsearch.
• Solid understanding of traffic routing, load balancing, and API gateway management (NGINX, Envoy, APISIX).
• Extensive experience with API lifecycle management and security best practices.
• Ability to work effectively in a high-scale distributed systems environment.

Nice to have

• Hands-on experience with performance profiling techniques like CPU flame graphs.
• Deep knowledge of service mesh architectures using Istio.
• Experience in advanced API security, including DDoS mitigation and mTLS implementation.
• Active participation in the open-source community and evaluation of cutting-edge technologies.

Culture & Benefits

• Opportunity to work on mission-critical systems at a high-growth global fintech company.
• Collaborative environment with top-tier engineering talent.
• Focus on accelerated learning, ownership, and founder-like energy.
• Commitment to equal opportunity and inclusive hiring practices.