Senior Backend Engineer

Airwallex

Senior Backend Engineer at Airwallex designing scalable services and resilient APIs. Collaborating with teams to build intelligent financial systems using Python and GCP.

Posted 6/17/2026full-timeSan Francisco • California • 🇺🇸 United StatesSenior💰 $150,000 - $245,000 per yearWebsite

Tech Stack

Tools & technologies

BigQueryCloudDistributed SystemsGoogle Cloud PlatformMicroservicesNoSQLPythonSQL

About the role

Key responsibilities & impact

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.

Requirements

What you’ll need

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.

Benefits

Comp & perks

medical, dental, and vision insurance
401(k) plan
short-term and long-term disability
basic life insurance
well-being benefits
at least 20 paid days of vacation
12 paid days of company holidays

ATS Keywords

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Hard Skills & Tools

PythonFastAPIPydanticSQLNoSQLdistributed systemsevent-driven architecturesmicroservicesdata architectureinfrastructure primitives

Soft Skills

collaborationproblem-solvingreliabilityinnovationcommunication