Senior Software Engineer - Distributed Systems Java/Kotlin/Go

airwallex (singapore) pte. ltd.; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Airwallex Singapore is seeking a senior engineer to own the design and operation of large-scale distributed systems. You will work across teams to deliver robust, scalable infrastructure built with Java, Kotlin or Go and modern data processing stacks.

You’ll thrive on ambiguity, drive architecture decisions, and mentor others, with a focus on AI/ML infrastructure and real-time performance. This role is based in Singapore.

Qualifications

• 5+ years of experience building and operating large-scale distributed systems or infrastructure platforms.
• Strong understanding of computer science fundamentals, including distributed systems, memory management and networking protocols.
• Proficiency in Java, Kotlin or Go.
• Hands-on experience with, or a strong desire to work deeply in, technologies such as Kafka, Flink, Spark, Kubernetes or OLAP engines.
• Experience taking complex technical challenges from initial design through production stability.
• Experience with performance tuning and systems internals, including state management, checkpointing and exactly-once semantics.
• A track record of providing technical leadership through architecture decisions, design reviews or mentorship.
• Curiosity about AI/ML infrastructure and real-time systems, with a focus on creating tangible business impact.

Skills

Distributed systems

Computer science fundamentals

Java/Kotlin/Go

Kafka/Flink/Spark/Kubernetes/OLAP

Production stability

Performance tuning

Architecture leadership

AI/ML infra interest

Job description

Airwallex Singapore is seeking a senior engineer to own the design and operation of large-scale distributed systems. You will work across teams to deliver robust, scalable infrastructure built with Java, Kotlin or Go and modern data processing stacks.

You’ll thrive on ambiguity, drive architecture decisions, and mentor others, with a focus on AI/ML infrastructure and real-time performance. This role is based in Singapore.