Senior Software Engineer, Tech Platform

Airwallex9 months ago

Location

SG - Singapore

Type

Full Time

Salary

CNY 40,000 – 70,000

Level

Senior

Role

Backend Engineer

Posted

Jun 16, 2025

Full TimeSenior

The role

Summary

Airwallex is seeking a Senior Software Engineer to join their Tech Platform Team in Singapore, working on mission-critical infrastructure including API gateways, global routing, search platforms, and notification systems. The role requires expertise in backend languages like Java/Go/Rust, cloud platforms (AWS/GCP), and infrastructure technologies like Kubernetes and Istio.

What you'll do

Infrastructure Development: Build and refine cutting-edge application infrastructure that eliminates technical bottlenecks and reduces maintenance overhead

API Gateway Management: Optimize global traffic through north-south and east-west API Gateways for seamless external and internal interactions

Global Routing Infrastructure: Build robust global routing infrastructure that balances regulatory compliance with unified user experience

Search Platform Enhancement: Power intelligent search platform for fast and accurate information retrieval across the system

Notification Orchestration: Enable efficient delivery of SMS, Email, Webhooks, and Push notifications at scale

Workflow Automation: Drive seamless workflow creation, scheduling, and execution using modern orchestration tools

Complex Problem Solving: Tackle intricate, organization-wide problems using latest technologies including reactive programming and distributed systems

Strategic Technology Evaluation: Conduct comprehensive evaluations of emerging solutions and guide long-term architectural decisions

What we look for

Technical

Backend Programming LanguagesStrong proficiency in Java, Go, Rust, Lua, or Python and their corresponding frameworks

Cloud InfrastructureFamiliarity with AWS, GCP, or Aliyun cloud services and infrastructure management

Container OrchestrationExperience with Kubernetes, Docker, and Istio for managing distributed systems

Database SystemsHands-on experience with PostgreSQL, Redis, Elasticsearch, and logical replication

Traffic ManagementStrong familiarity with NGINX, OpenResty, Envoy, APISIX, Kong for traffic routing and load balancing

API Lifecycle ManagementDeep understanding of API design, implementation, security, and deprecation processes

Education

Computer Science DegreeBachelor's degree in Computer Science, Engineering, or related technical field (preferred)

Experience

Senior-Level Experience5+ years of experience in backend software engineering with focus on distributed systems

Infrastructure EngineeringProven experience building and maintaining large-scale infrastructure systems

Performance OptimizationExperience with performance tuning and optimization in high-traffic environments

Security ImplementationExperience implementing API security best practices including authentication and authorization

Skills

Required skills

Backend ProgrammingStrong proficiency in Java, Go, Rust, Lua, or Python

Cloud PlatformsExperience with AWS, GCP, or Aliyun cloud services

Infrastructure ToolsProficiency with Kubernetes, Docker, and Istio

Database ManagementHands-on experience with PostgreSQL, Redis, and Elasticsearch

Traffic ManagementExpertise with NGINX, OpenResty, Envoy, APISIX, Kong

API SecurityUnderstanding of API lifecycle management and security best practices

Distributed SystemsExperience with performance optimization and scalability in distributed environments

Nice to have

Performance TuningAdvanced profiling techniques including CPU flame graphs for system optimization

Service MeshHands-on experience with Istio for managing Kubernetes pod traffic

Advanced API SecurityExperience with DDoS mitigation, SQL injection prevention, mTLS, and DLP

Open Source InnovationStay current with open-source advancements and evaluate cutting-edge technologies

Reactive ProgrammingExperience with reactive programming paradigms and frameworks

Temporal WorkflowsExperience with Temporal for workflow orchestration and execution

Compensation & benefits

Salary

CNY 40,000 – 70,000 (annual)

Benefits

Global Impact

Work on mission-critical systems serving over 200,000 businesses worldwide

Elite Team Collaboration

Collaborate with top engineering talent across 26 global offices

Career Growth

Accelerated learning opportunities and true ownership in a rapidly growing fintech

Cutting-Edge Technology

Work with latest technologies including AI, reactive programming, and distributed systems

Innovation Culture

Founder-like energy environment encouraging real impact and first-principles thinking

Equal Opportunity

Inclusive workplace valuing diversity and merit-based hiring decisions

Interview process

1
Initial Screening — Phone or video call to discuss background and interest in the role
2
Technical Assessment — Coding challenge focusing on backend systems design and implementation
3
System Design Interview — Discussion of large-scale distributed systems and infrastructure architecture
4
Technical Deep Dive — In-depth technical interview covering API gateway, cloud infrastructure, and performance optimization
5
Cultural Fit Interview — Discussion of Airwallex's operating principles and team collaboration approach
6
Final Round — Meeting with senior leadership and team members to discuss role expectations and company vision