Joseph Lerner

About Joseph Lerner

I’m a backend software engineer at Topgolf, where I take ownership of building high-performance, scalable systems that drive critical business operations. I was the primary backend engineer responsible for bringing Topgolf’s booking platform across the finish line, leading it to MVP and main release. This platform facilitates a substantial portion of Topgolf\'s traffic and overall revenue (which reached approximately $1.9 billion in 2025).Beyond development, I’m passionate about systems and networking, both in engineering and research. I also enjoy traveling and welcome any opportunity to use my French or Spanish skills!

Experience

1. Software Engineer Ii

   Topgolf

   Jun 2025 — Present

   Key backend contributor to Topgolf’s booking platform supporting millions of visitors. Owned a significant part of the successful migration to an in-house reservations system, delivering multi-million-dollar annual cost savings and improving performance and reliability.• Built core platform features including reservation bundles, self-service reservation edits, and internal admin tooling used by operations and customer care.• Integrated payments and external services including Visa cardholder eligibility and Apple Pay to support secure, end-to-end booking flows.• Technology Stack: Scala, Akka, MySQL, Redis, gRPC, Kubernetes

Education

• McGill University

  Bachelor of Arts - BA, Computer Science