
Staff/Senior Backend Engineer
Airwallex
full-time
Posted on:
Location Type: Hybrid
Location: San Francisco • California • United States
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Salary
💰 $150,000 - $299,000 per year
Job Level
About the role
- 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.
Requirements
- 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
- US-based employees are eligible to participate in medical, dental, and vision insurance
- 401(k) plan
- short-term and long-term disability
- basic life insurance
- well-being benefits
- 20 paid days of vacation
- 12 paid days of company holidays in a calendar year.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
PythonFastAPIPydanticSQLNoSQLdistributed systemsevent-driven architecturesmicroservicesdata architectureAPI development
Soft Skills
collaborationproblem-solvingreliabilityinnovationcommunication