Senior Backend Engineer, Agentic AI

Airwallex; San Francisco (CA); On-site; USD 150,000 - 245,000; Full time

Job summary

Airwallex is looking for a Senior Backend Engineer in San Francisco to design scalable financial systems and develop resilient infrastructure. Candidates should have over 5 years of Python experience, especially in backend development for databases and distributed systems.

The role includes building APIs and services and collaborating closely with product teams to enhance intelligent products. Compensation ranges from $150K to $245K.

Qualifications

• 5+ years backend experience with Python at scale.
• Deep knowledge of SQL/NoSQL database design.
• Experience with distributed systems, event-driven architectures, or microservices.

Responsibilities

• Design distributed, event-driven systems for financial data.
• Build production-grade APIs and services in Python.
• Own data architecture design and storage layers.

Skills

Backend experience with Python

SQL/NoSQL database design

Distributed systems knowledge

Experience with microservices

Familiarity with GCP services

Security and compliance

Job description

About The Role

As a Senior Backend Engineer, you’ll design the backbone of our intelligent finance systems: scalable services, resilient APIs, and thoughtful data models. Our backend is primarily Python on GCP, and your work will ensure we can move quickly while maintaining enterprise‑grade reliability and security.

What You'll Do

• Design and operate distributed, event‑driven systems that process high‑volume, high‑sensitivity financial data with strict correctness and latency guarantees.
• Build typed, production‑grade APIs and services in Python (FastAPI + Pydantic) that power agentic workflows, AI copilots, and real‑time financial infrastructure.
• Own data architecture end‑to‑end schema design, event models, ledger primitives, and storage layers optimized for auditability, traceability, and scale.
• Develop resilient infrastructure primitives (queues, retries, idempotency, observability, backpressure handling) that let teams ship fast without sacrificing reliability.
• Work at the intersection of systems + AI, building feedback loops where product data continuously improves models and models autonomously improve system behavior.
• Ship platform foundations, not one‑off features, internal frameworks, SDKs, and tooling that accelerate every engineer in the org.
• Partner closely with ML + product teams to productionize research‑grade ideas into real customer‑facing systems.
• Help define the architecture of an AI‑native financial stack not bolting AI onto software, but designing software assuming AI is a first‑class runtime.

What You’ll Need To Have

• 5+ years backend experience with Python at scale.
• Deep knowledge of SQL/NoSQL database design.
• Experience with distributed systems, event‑driven architectures, or microservices.
• Familiarity with GCP services (Pub/Sub, Cloud Run, Cloud SQL, BigQuery, KMS, etc.).
• Strong grasp of security and compliance best practices.
• Passion for building the backend that powers intelligent products.

This role is based in San Francisco.

Compensation Range: $150K - $245K

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.