Sergey Demyanov
Staff Software Engineer at Robinhood
Walnut Creek, California, United States
Summary
👤
Senior🎓
Top SchoolSergey Demyanov is a Staff Software Engineer with over 15 years designing and delivering distributed, high-availability systems across startups and large enterprises, now based in Walnut Creek, CA. He blends deep full-stack engineering—mobile, backend, and cloud—with hands-on architecture for lambda/kappa pipelines, containerized infrastructure, and IoT device ecosystems. At Instagram and Meta he helped scale real-time video and future AR/VR systems, and his recent roles include leadership at Conduit and Robinhood where he continues to drive platform reliability and automation. A polyglot coder (Python, Go, JavaScript, Erlang, C# and more) who prefers to automate processes out of existence, he also contributes to open-source server projects like DeviceHive through targeted refactors that streamline core services. Known for mentoring teams and troubleshooting production at scale, he pairs a mathematician’s rigor with pragmatic engineering and an unusual background spanning industrial gateways to consumer live streaming.
11 years of coding experience
25 years of employment as a software developer
Master’s Degree Mathematics and Computer Science, Master’s Degree Mathematics and Computer Science at V. N. Karazin Kharkiv National University
English, Russian, Ukrainian
Github Skills (10)
devicehive10
javas10
java10
spring-boot10
postgresql9
hazelcast8
rest8
microservices-application7
kafka7
microservices7
Programming languages (5)
Github contributions (5)
devicehive/devicehive-java-server
May 2015 - Oct 2015
DeviceHive Java Server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 releases, 68 commits, 29 PRs in 5 months
Contributions summary:Sergey's commits primarily involved refactoring and code cleanup within the DeviceHive Java Server. They focused on removing client-related files, messaging tools, and redundant code segments. Changes included modifications in DeviceDAO, DeviceActivityService, and NetworkDAO, as well as updates to Device and CacheHelper classes. These actions suggest a focus on optimizing the server's core functionalities and dependencies.
devicehive-java-serverdataartwebsocketszookeeperdevicehive
devicehive/IoT-framework
Apr 2015 - Feb 2016
Contributions:1 release, 136 commits, 7 PRs in 10 months
golanggo-frameworkdevicehivemqttm2m
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