John Rohrssen
Principal Software Engineer at Zynga
San Diego, California, United States
Summary
👤
Senior🎓
Top SchoolJohn Rohrssen is a Principal Software Engineer with 11 years of experience designing and shipping high-performance game systems across mobile and AAA titles. He has led architecture and engineering at studios including Zynga, Jam City, Disney Interactive and Team Tiger Studio, delivering multiple product launches under tight deadlines while optimizing speed and UX. His strengths include component-based, data-driven architectures, Unity editor tooling, and server integrations using GoLang gRPC to support scalable deployments. Past work spans client and server domains—from multithreaded C#/C++ tooling and live Linux server support for 700k+ users to pattern-hashing and performance-focused gameplay systems. He pairs hands-on engineering with team leadership, hiring and mentoring engineers to elevate delivery quality. Based in San Diego, he’s known for turning complex game requirements into pragmatic, maintainable systems that accelerated launch cadence and runtime performance.
11 years of coding experience
13 years of employment as a software developer
BS, Computer Science, BS, Computer Science at San Diego State University
Stackoverflow
1reputation
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Programming languages (1)
Github contributions (5)
SpikE4343/pico-flight
May 2021 - Mar 2022
Contributions:37 commits, 29 pushes, 2 branches in 10 months
SpikE4343/zig-engine
Sep 2020 - Apr 2022
Contributions:49 pushes, 6 branches in 1 year 6 months
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