Open to opportunities

Gaëtan Guéraud

@gatanguraud

Message

I build reliable Ruby on Rails backends for complex, high-traffic products.

Australia

Message

What I'm looking for

I'm looking to build reliable backend products where I can own data models end to end, solve complex API and PostgreSQL challenges, and contribute to maintainable microservices.

I've built Ruby on Rails backends for Qantas Hotels, Frollo, Airtasker, and products across fintech, travel, and consumer services. At Qantas Hotels, I designed financial refund allocation for multi-form-of-payment bookings and worked on high-traffic booking, pricing, and inventory microservices.

At Frollo, I led Product Reference Data for Open Banking, designing schemas for changing regulatory requirements and messy bank data. I built backend services for Open Banking link and partner integrations, including data ingestion, APIs, and end-to-end schema ownership.

I enjoy owning data models from API contract through production, improving PostgreSQL performance under load, and shipping maintainable services with observability, security, and clear documentation.

Experience

Work history, roles, and key accomplishments

Software Engineer Ruby

Qantas Hotels

Nov 2022 - Apr 2026 (3 years 5 months)

Worked across multiple Ruby on Rails microservices for booking and pricing, including API contracts and BFF layers. Designed refund allocation for multi-form-of-payment bookings and added observability with OpenTelemetry, Sentry, and Splunk.