Senior Backend Engineer, Agentic AI

The role

You will design backend foundations for T:0's intelligent finance systems including scalable services, APIs, and data models. You will build Python services, develop infrastructure primitives, and partner with ML and product teams to productionise research-grade ideas.

What you will do

• Build typed, production-grade APIs and services in Python using FastAPI and Pydantic
• Develop resilient infrastructure primitives including queues, retries, idempotency, observability, and backpressure handling
• Work at the intersection of systems and AI to build feedback loops
• Ship platform foundations including internal frameworks, SDKs, and tooling
• Partner closely with ML and product teams to productionise research-grade ideas
• Help define the architecture of an AI-native financial stack

Required qualifications

• 5+ years of backend engineering experience with Python at scale
• Deep knowledge of SQL and NoSQL database design
• Experience with distributed systems, event-driven architectures, or microservices
• Familiarity with GCP services such as Pub/Sub, Cloud Run, Cloud SQL, BigQuery, and KMS
• Strong understanding of security and compliance best practices
• Experience designing and operating reliable, production-grade services
• A passion for building the backend systems that power intelligent products

Nice to have

• Experience building agentic workflows, AI copilots, or AI-native products
• Experience with financial systems, ledgers, payments, accounting, or other high-integrity domains
• Experience building internal platforms, frameworks, SDKs, or developer tooling
• Experience partnering closely with ML and product teams to productionize research or prototypes

About the company

Airwallex is an AI-native financial operating system used by over 675,000 businesses. It provides financial infrastructure spanning North America, Europe, the Middle East, and Asia-Pacific.