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Senior Backend Engineer, Agentic AI

Airwallex· Engineering
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Hybrid (US - San Francisco)$150k - $245kFull-timePosted 3mo ago

About the role

Senior backend engineer responsible for designing and building the AI-native financial stack and backend foundations for T:0’s intelligent finance systems, including scalable services, resilient APIs, and data models to support agentic workflows and real-time financial infrastructure.

Responsibilities

  • 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, so teams can ship quickly without sacrificing reliability.
  • Work at the intersection of systems and AI, building feedback loops where product data continuously improves models and models improve system behaviour.
  • Ship platform foundations, including internal frameworks, SDKs, and tooling, that accelerate engineers across the organisation.
  • Partner closely with ML and product teams to productionise research-grade ideas into customer-facing systems.
  • Help define the architecture of an AI-native financial stack by designing software with AI as a first-class runtime rather than bolting AI onto existing systems.

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.

Skills

Required:PythonFastAPIPydanticSQLNoSQLDistributed systemsGCP

Benefits

  • Airwallex benefits vary by country and employment type in accordance with local statutory requirements.
  • All employees receive at least the statutory minimum for paid annual leave and public holidays, with many locations offering additional company-provided vacation days.
  • US-based employees are eligible for medical, dental, and vision insurance, a 401(k) plan, short-term and long-term disability, basic life insurance, and well-being benefits.
  • US-based employees also receive 20 paid days of vacation and 12 paid days of company holidays in a calendar year.
Last updated Oct 22, 2026. Interested? Apply on the company site.
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About Airwallex

Trusted Global Payments & Financial Platform

Grow your business faster with Airwallex - global business accounts, high speed transfers, multi-currency cards, online payments, embedded finance, and more.

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