Senior Backend Engineer Job at Airwallex (Singapore)

Senior Backend Engineer

Airwallex

Location:
Singapore , Singapore

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

As a Senior Engineer on the Spend team, you will design and build scalable backend systems. You will collaborate with cross-functional teams to deliver reliable, secure features while mentoring engineers and influencing the technical direction of the platform. The Spend team are revolutionising the way businesses manage their spend and manage bills, credit cards and expenses. This team solves complex challenges around the growing demands of data and feature complexity in credit cards, bills and and expenses, and they work at the exciting intersection of our backend infrastructure and customer facing applications, working on distributed systems that manage millions of transactions.

Job Responsibility:

Design and build scalable backend systems
Collaborate with cross-functional teams to deliver reliable, secure features
Mentor engineers and influence the technical direction of the platform
Strong focus on technical excellence through high-quality coding and sound system design
Committed to delivering high-quality, well-tested solutions
Experienced in designing and building REST APIs
Collaborates effectively with cross-functional, multi-regional teams
Takes a pragmatic approach to problem-solving, weighing trade-offs before adopting new technologies

Requirements:

Bachelor’s degree in Computer Science, Software Engineering, or a related field
5+ years of professional software engineering experience
Hands-on experience designing and building backend systems and APIs in production
Strong computer science fundamentals, including algorithms, data structures, and distributed systems
Proficient in at least one backend language (e.g., Java, Kotlin, Go, Python)
Solid understanding of REST API design and backend frameworks (e.g., Spring Boot)
Experience working with cloud infrastructure (e.g., AWS, GCP) and container orchestration (e.g., Kubernetes)
Strong focus on performance, reliability, and code quality

Nice to have:

Familiarity with observability and monitoring tools (e.g., Grafana, Prometheus, Splunk)

Additional Information:

Job Posted:
February 21, 2026

Employment Type:

Fulltime

Work Type:

On-site work

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