Sergey Romanovskiy
Principal Engineer, Advertising Technologies at Walmart Global Tech
Los Altos, California, United States
Summary
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Senior🎓
Top SchoolSergey Romanovskiy is a Principal Engineer in Advertising Technologies with 12 years of experience designing distributed systems and search infrastructure, now based in Los Altos, California. He brings deep functional-programming expertise (Scala/Haskell) and hands-on AWS architecture skills to high-throughput ad platforms. At Walmart Global Tech he focuses on scalable, reliable ad systems where low-latency search and data consistency are critical. Trained with a master's from ITMO University, he blends academic rigor with pragmatic engineering, often favoring elegant type-safe solutions over quick fixes. Colleagues would note his tendency to prototype complex subsystems in functional languages to uncover simpler, more maintainable production designs.
12 years of coding experience
master, master at ITMO University
Russian, English
Stackoverflow
4,376reputation
425kreached
56answers
11questions
data-structures
top-1%
complexity-theory
top-1%
python
top-5%
big-o
top-1%
Github Skills (75)
complexity-theory10
big-o10
data-structures10
python9
to-do8
android8
nodejs8
javascript7
dropbox7
amazon7
react-native7
nextcloud7
haskell6
webdav6
windows6
Programming languages (6)
Github contributions (5)
romanovsky/haskell-concepts-mindmap
May 2014 - May 2015
Contributions:27 commits, 1 push in 11 months
romanovsky/interview-notes
Feb 2016 - Jul 2016
Contributions:84 pushes, 1 branch in 4 months
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