• 
• Seattle, USA
  May 2023 - August 2024

Snowflake - Senior Software Engineer (Production/Infrastructure)

• Architected a company-wide certificate discovery system, managing 10k+ certificates across AWS, GCP, and Azure to eliminate renewal blind spots and preventing expired certificate outages.
• Prevented a major outage for a global banking client by identifying a root CA rotation edge case in legacy Java runtimes and coordinating a safe migration strategy.
• Modernized global ingress routing by contributing to the migration from legacy NGINX to a custom, dynamic Envoy-based routing platform.
• Coordinated cross-functional remediation of a critical authentication vulnerability, closing a security bypass vector involving inter-service communication between application layers.
• Developed network-level mitigation tools during high-stakes security incident to block attacker-associated IPs and limit the blast radius of credential-stuffing attempts.

• 
• Seattle, USA
  May 2019 - March 2023

Amazon - Senior Software Development Engineer

AWS S3 Index Team

• Engineered replica consistency and repair workflows for S3 Index (RAD service), maintaining 11-nines of availability for trillions of objects across global regions.
• Resolved a critical midnight durability event by diagnosing a parallel-write race condition; reconstructed write-ordering using legacy event logs to safely repair diverging replicas.
• Led efforts to reduce regional repair latency by 40% in high-traffic regions (IAD), shrinking the window for latent inconsistencies from 5 hours to under 3 hours.
• Designed deep-consistency monitoring to validate S3 consistency, enabling the confident rollout of performance-enhancing features for individual replica reads.

Kindle Fraud & Abuse Team

• Architected a high-throughput ML fraud detection pipeline by integrating custom Python inference logic with SageMaker and Kinesis Data Streams; successfully processed tens of millions of daily events in near-real-time.
• Built a CI/CD and automated workflow to ensure model correctness and strict latency SLAs were met before influencing author royalty calculations.
• Served as Technical Lead for the Author Portal migration, moving from a legacy Java middle-tier to a modern Spring Boot and Elasticsearch architecture to improve search performance and scalability.

• 
• Sydney, Australia
  March 2016 - April 2019

Qantas - Principal Software Engineer

• Architected a high-concurrency middleware layer using Java and Spring to unify fragmented legacy APIs, supporting millions of flight events daily.
• Led engineering practices over the transformation of the Qantas website to AEM, migrating from a monolithic architecture to a decoupled microservices environment on AWS.
• Standardized engineering excellence across multiple teams by introducing automated testing, CI/CD pipelines, and a shared internal library for common patterns.
• Directly managed and mentored a team of engineers, balancing hands-on technical contribution with strategic roadmap planning.
• Founded the Security Guild to improve security best practices across development teams.

• 
• Sydney, Australia
  January 2015 - March 2016

RateCity - Technical Director

• Transformed engineering culture by implementing Agile/Scrum frameworks, improving delivery predictability and team velocity.
• Modernized the front-end architecture by migrating from Rails to a decoupled ReactJS stack.
• Transitioned hosting to AWS, re-platforming the infrastructure to support horizontal scalability and improved site reliability.