Senior Software Engineer, Edge Team

AIRWALLEX (SINGAPORE) PTE. LTD.; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

A global payments platform is seeking a Senior Software Engineer to enhance edge infrastructure, focusing on API gateways, CDN, and DNS management. The ideal candidate will possess strong skills in cloud networking and edge security, alongside the ability to lead technical initiatives. With a vibrant team and a commitment to technological innovation, this role offers a unique opportunity to contribute to cutting-edge systems and drive performance improvements in a high-impact environment.

Qualifications

• Strong experience in edge networking components.
• Hands-on with cloud networking services like AWS and GCP.
• Able to lead technical initiatives and deliver working systems.

Responsibilities

• Lead design and implementation of edge networking components.
• Develop and maintain rate limiting and firewall policies.
• Contribute to performance and resilience improvements.

Skills

API gateways (Envoy, NGINX/OpenResty, Kong, Apisix)

CDN management

DNS routing

AWS, GCP, Cloudflare

WAF and firewall rules

Kubernetes ingress controllers

Tools

Terraform

Helm

Job description

About Airwallex

Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 150,000 businesses worldwide – including Brex, Rippling, Navan, Qantas, SHEIN and many more – with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale.

Proudly founded in Melbourne, we have a team of over 1,700 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$6.2 billion and backed by world-leading investors including Visa, Airtree, Blackbird, Sequoia, DST Global, Greenoaks, Salesforce Ventures, Lone Pine, and Square Peg, Airwallex is leading the charge in building the global payments and financial platform of the future. If you’re ready to do the most ambitious work of your career, join us.

About the Role

We are looking for skilled Senior Software Engineers to help shape and evolve Airwallex’s edge infrastructure—covering API gateway, CDN, DNS, global accelerators, and perimeter security systems. This is a high-impact engineering role focused on designing and delivering critical components of our global edge platform.

As a Senior Engineer, you’ll lead scoped initiatives, drive system-level improvements, and partner with platform, product, and InfoSec teams to enhance performance, resilience, and security. You’ll operate at the intersection of infrastructure and security, ensuring traffic entering Airwallex is fast, secure, and governed by clear engineering standards.

In this role, you will:

🌐Own and Deliver Key Edge Systems

Lead design and implementation of edge networking components such as:

• API Gateways (routing, throttling, transformation)
• CDN caching and invalidation policies
• DNS zone management and global resolution setup

Partner with infra and SRE teams to ensure scalability, availability, and maintainability

🔐 Implement and Improve Border Security

Develop and maintain rate limiting, WAF, firewall, and bot mitigation policies

Work with Infosec to roll out detection and protection rules across providers (Cloudflare, AWS WAF, Tencent GAAP, etc.)

Instrument and measure edge protections for reliability and effectiveness

📦 Contribute to API Exposure and Governance

Help develop internal tooling for API route registration and review

Implement policy checks for route naming, versioning, authentication, and traffic tiering

Support onboarding of teams to edge policies and route lifecycle processes

🚦 Improve Performance and Resilience at Scale

Tune configurations for routing, caching, failover, and latency optimization

Analyze traffic patterns and propose system improvements for core services (e.g., payments, onboarding)

Contribute to multi-region and multi-provider edge deployments

What We’re Looking For

Technical Skills

Strong experience in one or more areas of edge networking:

• API gateways (e.g. Envoy, NGINX/OpenResty, Kong, Apisix)
• CDN management and performance tuning
• DNS routing and global traffic optimization

Hands-on with cloud networking services (AWS, GCP, Cloudflare, etc.)

Familiar with WAF, firewall rules, rate limiting, and traffic classification

Working knowledge of service mesh, Kubernetes ingress controllers, and infra-as-code (Terraform, Helm, etc.)

Engineering and Execution Skills

Able to lead scoped technical initiatives and deliver working systems

Strong debugging, systems thinking, and code review capabilities

Experience working across teams to linkalign on requirements and rollout plans

Comfortable writing design documents and collaborating with infra and security peers

Bonus

Experience working on regulated or high-security environments

Exposure to multi-cloud edge and global failover strategies

Equal opportunity

Airwallex is proud to be an equal opportunity employer. We value diversity and anyone seeking employment at Airwallex is considered based on merit, qualifications, competence and talent. We don’t regard color, religion, race, national origin, sexual orientation, ancestry, citizenship, sex, marital or family status, disability, gender, or any other legally protected status when making our hiring decisions. If you have a disability or special need that requires accommodation, please let us know.

Airwallex does not accept unsolicited resumes from search firms/recruiters. Airwallex will not pay any fees to search firms/recruiters if a candidate is submitted by a search firm/recruiter unless an agreement has been entered into with respect to specific open position(s). Search firms/recruiters submitting resumes to Airwallex on an unsolicited basis shall be deemed to accept this condition, regardless of any other provision to the contrary.