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About the Role

We are looking for a Senior Software Engineer to build the infrastructure that powers our data and AI platforms. You will design and operate distributed systems that support high-throughput data processing, real-time workloads, and production AI applications. This includes evolving our Kubernetes and cloud foundations, improving the reliability and scalability of platforms such as Kafka, Spark, and Flink, and building infrastructure for AI traffic management and model serving. This is a high-impact role for an engineer who enjoys solving complex infrastructure problems, writing production software, and giving other engineering teams reliable self-service platforms. You will work across application, data, machine learning, security, and infrastructure teams to establish the technical foundations for the company’s next stage of growth.

Responsibilities

Design, build, and operate highly available data and AI infrastructure on Kubernetes and public cloud platforms.
Develop scalable platforms for streaming, batch processing, and real-time data workloads using technologies such as Kafka, Spark, and Flink.
Build and evolve AI infrastructure, including AI gateways, model-routing layers, traffic management, rate limiting, authentication, observability, and usage controls.
Develop self-service capabilities that enable data, AI, and application teams to deploy and operate workloads safely and independently.
Partner with engineering teams to translate emerging data and AI requirements into durable platform capabilities.

Requirements

5+ years in DevOps, SRE, or platform engineering, owning production systems end to end
Strong experience designing, operating, and troubleshooting production Kubernetes environments.
Experience building or operating distributed data infrastructure with technologies such as Kafka, Spark, or Flink OR experience developing AI infrastructure such as AI gateways or model-routing platforms.
Hands-on experience with at least one major public cloud platform, such as AWS, Google Cloud, or Microsoft Azure.
Strong knowledge of cloud and container networking, including DNS, load balancing, ingress, service discovery, TLS, routing, and network security.
Proficiency in one or more of Go, Python, or Java, with experience writing maintainable production software.
A solid understanding of distributed-systems concepts, including availability, consistency, fault tolerance, backpressure, and horizontal scalability.
Experience operating critical infrastructure using infrastructure-as-code, automated delivery, and modern observability practices.
Strong debugging skills and the ability to work methodically across multiple layers of a complex system.
Clear communication skills and a track record of collaborating effectively across engineering disciplines.
An ownership mindset: you identify important problems, drive them to resolution, and improve the underlying system rather than treating symptoms.

Skills

DevOps
SRE
Platform engineering
Kubernetes
Kafka
Spark
Flink
AI gateways
Model-routing platforms
AWS
Google Cloud
Microsoft Azure
Cloud networking
Container networking
DNS
Load balancing
Ingress
Service discovery
TLS
Routing
Network security
Go
Python
Java
Distributed-systems concepts
Infrastructure-as-code
Automated delivery
Observability
Debugging
Communication
Collaboration
Platform engineering
Internal developer platforms
Paved-road workflows
SGLang
vLLM
NVIDIA Triton Inference Server
GPU scheduling
Batching
Model parallelism
Memory management
Autoscaling
Inference-performance optimization
Cost efficiency optimization
Open-source contributions

Location

Seoul, South Korea

Work Type

Full-time

Experience Level

Senior
5+ years

About the Company

Airwallex is the AI-native financial operating system for a real-time, intelligent economy.
More than 676,000 businesses, including McLaren Racing, Qantas, SHEIN, and TikTok, use us, directly or through our platform partners, to run their financial operations or build and monetize financial products of their own.
We started in Melbourne in 2015 to build the infrastructure global commerce runs on.
We're the regulated backbone behind global payments: not by accident, but by design.
A decade plus, 85+ licenses, and a financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.
We're co-headquartered in San Francisco and Singapore, with more than 2,300 people across 27 offices.
We hire builders with founder-level energy, people who move fast with good judgment, dig in with real curiosity, and make calls from first principles rather than waiting to be told what to do.
Read our operating principles to see it in full.

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.