Steven Lee is a seasoned software engineer with 14 years’ experience and over eight years at Booking.com, where he built and scaled end-to-end email marketing systems serving hundreds of millions of subscribers. He blends systems architecture, data engineering and machine learning to drive measurable business outcomes—reducing email deliveries by 55% while boosting engagement up to 64% and cutting generation costs by 30%. Equally comfortable in Java, Perl, Kafka, Hadoop, React and Kubernetes, he has led cross-functional teams, mentored data scientists, and shipped services handling up to a million requests per minute. Known for turning legacy stacks into modern platforms (GraphQL proofs-of-concept, CI/CD, monitoring and operational runbooks), he pairs a pragmatic engineering mindset with a strong record of successful A/B experiments and production impact. Now based in Sydney and currently at Tyro Payments, he continues to focus on high-throughput, resilient systems that directly improve customer funnels.
Contributions:4 PRs, 22 pushes, 9 tags in 4 years 2 months
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