Staff Software Engineer Spend

AIRWALLEX (SINGAPORE) PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

A financial technology firm in Singapore is looking for a Staff Engineer for their Cards team. This role involves leading the architecture and development of complex backend systems that support their card products. The ideal candidate should have over 7 years of software engineering experience, expertise in backend languages, and a passion for mentoring. Competitive compensation and opportunities for professional growth are offered in a collaborative environment focused on scalability and reliability.

Qualifications

• 7+ years of professional software engineering experience.
• Proven experience in architecting backend systems.
• Strong computer science fundamentals.

Responsibilities

• Drive the architecture and evolution of backend systems.
• Lead technical initiatives and align with engineering goals.
• Guide teams in scalable and secure system design.

Skills

Backend architecture

Cloud infrastructure

REST API design

Mentoring

Education

Bachelor’s degree in Computer Science or related field

Tools

Kubernetes

AWS

Grafana

Prometheus

Spring Boot

Job description

About the Team

The Cards team at Airwallex builds and maintains distributed systems that enable businesses to issue debit cards and manage expenses at scale. The team addresses complex requirements around compliance, security, and the evolving needs of global users, supporting millions of seamless card transactions and ensuring robust, reliable expense management solutions for companies worldwide.

What you’ll do

As a Staff Engineer on the Cards team, you will lead the architecture and development of complex backend systems that support our card products. You will drive cross-team technical initiatives, mentor engineers, and shape the long-term engineering strategy to ensure scalability, security, and reliability at a global scale.

This role is based in Singapore.

Responsibilities:

• Drive the architecture, design, and evolution of complex backend systems that support the Cards product.
• Lead cross-functional technical initiatives and ensure alignment with long-term engineering goals.
• Own the full lifecycle of backend services—from idea to design, implementation, testing, deployment, and maintenance.
• Guide teams in making scalable, secure, and high-performing system design decisions.
• Establish engineering best practices around observability, testing, and API design.
• Mentor and support the growth of engineers across the team.
• Collaborate closely with product, design, and infrastructure teams to deliver reliable and impactful solutions.

Who you are

We are looking for senior engineers with deep technical expertise and a strong track record of impact as an individual contributor.

Minimum qualifications:

• 7+ years of professional software engineering experience, with sustained impact as a senior or staff-level individual contributor.
• Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Proven experience architecting and scaling backend systems and APIs in production.
• Strong computer science fundamentals, including data structures, algorithms, and distributed systems.
• Expertise in at least one backend language (e.g., Java, Kotlin, Go, Python).
• Deep understanding of REST API design and modern backend frameworks (e.g., Spring Boot).
• Experience with cloud infrastructure (e.g., AWS, GCP) and container orchestration tools like Kubernetes.
• Strong commitment to code quality, reliability, and performance.

Preferred qualifications

• Experience leading cross-team initiatives and influencing technical direction at a system-wide level.
• Proficiency in observability and monitoring tools (e.g., Grafana, Prometheus, Splunk).
• Familiarity with security and compliance considerations in the financial services domain.
• A passion for mentoring and helping others grow.