John Griffin
Senior Software Engineer at illumin (AcuityAds Inc.)
Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolJohn Griffin is a Senior Software Engineer based in Toronto with 12+ years building low-latency, high-throughput distributed systems, currently driving backend development for an OpenRTB platform that handles over 120 billion requests per day. He is deeply experienced in JVM performance tuning and resilient system design, having designed Java APIs, RESTful services, and led testing and refactoring efforts across high-traffic ad tech infrastructure. His background spans in-memory data grids, cloud-native services, IoT analytics, and mobile apps—evidencing a rare mix of real-time systems and product-facing engineering. Notably, he has applied those skills to mission-critical ad serving at illumin and to an IoT dairy-monitoring product earlier in his career, showing both domain versatility and an eye for pragmatic, scalable solutions.
12 years of coding experience
5 years of employment as a software developer
BSc (Hons) Computing with Software Development, Computer Software Engineering, First Class Honours, BSc (Hons) Computing with Software Development, Computer Software Engineering, First Class Honours at Munster Technological University
English
Stackoverflow
503reputation
21kreached
31answers
1question
Github Skills (26)
logger10
java9
logging9
bitset7
client-library7
java-api7
lucene7
while-loop6
aerospike6
android6
android-canvas6
nfc6
android-fragments6
navigation-drawer6
spark-ml6
Programming languages (1)
Github contributions (5)
griffinjm/FifoThreadMuxer
Oct 2016 - Aug 2018
Contributions:40 commits, 32 pushes, 1 branch in 1 year 9 months
griffinjm/GriffChart
Oct 2014 - Nov 2014
Contributions:33 commits in 23 days
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