Senior AI Engineer (Risk & Payments)

Location: Sydney, Australia

Company

Airwallex is an AI-native financial operating system providing regulated global payments infrastructure and financial products for businesses.

What you will do

• Translate business problems into end-to-end AI agent solutions for risk management and payment processing.
• Architect and deploy AI agents with LangChain, LlamaIndex, AutoGen, CrewAI, Semantic Kernel, and other open-source frameworks.
• Apply prompting, retrieval-augmented generation, and fine-tuning techniques.
• Design agent architectures for reasoning, tool use, and workflow automation.
• Build AI systems that improve through usage and integrate AI reasoning into secure production systems with backend and frontend engineers.
• Develop evaluation and monitoring frameworks to support AI governance.

Requirements

• 2+ years of applied AI/ML engineering experience with production deployments.
• Strong Python skills and experience with ML frameworks such as PyTorch or JAX.
• Experience building and deploying AI agents, orchestration frameworks, or multi-step reasoning systems for business problems.
• Understanding of monitoring, evaluation, and iteration for production AI systems.
• Ability to balance innovation with reliability, scalability, and compliance.

Culture & Benefits

• Work within a risk and payments product team focused on intelligent financial infrastructure.
• Collaborate across AI, backend, and frontend engineering disciplines.
• Operate in a fast-moving environment with founder-level ownership and first-principles decision-making.
• Join an international organization with more than 2,300 employees across 27 offices.