Open to opportunities

Catherine Ambrad

@catherineambrad

I build reliable, high-traffic booking and inventory platforms with PHP, Laravel, PostgreSQL, and Redis.

At Agoda, I built and maintained 25+ Laravel REST API endpoints for high-traffic booking, inventory, and availability search flows. I cut p95 search API latency by roughly 30% through PostgreSQL tuning and Redis caching, and redesigned queued booking confirmation to prevent duplicate-charge race conditions.

I've progressed from Junior Laravel Developer at TADE Infotech to backend roles at GovTech and Agoda, owning data models, payment and order workflows, CI/CD, and platform architecture. I also mentor junior developers and build dependable PHP, Laravel, Symfony, PostgreSQL, AWS, Docker, Kubernetes, and Terraform systems.

Experience

Work history, roles, and key accomplishments

Senior Backend Developer

Agoda

Nov 2023 - May 2026 (2 years 6 months)

Built and maintained 25+ Laravel REST API endpoints for booking, inventory, and availability search. Redesigned availability-caching logic and booking-confirmation processing, cutting p95 latency by roughly 30% and eliminating duplicate-charge race conditions.

PHP Laravel PostgreSQL Redis RabbitMQ Docker Kubernetes Terraform AWS GitHub Actions Datadog PHPUnit Behat

Backend Developer

GovTech

Feb 2019 - Oct 2023 (4 years 8 months)

Owned PostgreSQL data models, stored procedures, and transaction boundaries for order, catalog, and customer-service domains. Diagnosed N+1 Eloquent queries and restructured eager loading, improving page-load time by roughly 35%.

PHP Laravel Symfony PostgreSQL Redis AWS GitHub Actions PHPUnit Behat Jira Confluence Slack

Intern / Junior Laravel Developer

TADE Infotech

Aug 2016 - Jan 2019 (2 years 5 months)

Replaced spreadsheet-based tracking with a Laravel + PostgreSQL system serving multiple internal client accounts. Built REST APIs with authentication and validation, used as the backend contract for 3 internal tools.

PHP Laravel PostgreSQL REST APIs Git