Sergei Kalashnikov
Senior Backend Engineer at Sweed
Santa Catarina, Brazil
Summary
🤩
Rockstar🎓
Top SchoolSergei Kalashnikov is a Senior Backend Engineer and solution architect with over a decade building scalable backend systems (C#/.NET, PostgreSQL, microservices) and extensive full-stack experience in TypeScript and React. He has repeatedly owned end-to-end delivery for large, business-critical platforms—from a 30+ microservice HR portal at Alibaba to migrating monoliths to .NET 8 and designing real-time chat and seat-map constructors for transport systems. Known for improving operational efficiency, his architectures have cut manual HR work by up to 90% and accelerated critical workflows by 50–100× through targeted performance and SQL optimizations. Sergei blends hands-on engineering with product-level thinking, often acting as the solo architect on complex engagements and running weekend advisory roles while mentoring teams. Based in Santa Catarina, Brazil, he champions AI-assisted development patterns to boost productivity and code quality and is open to global remote roles that tackle high-impact, complex challenges. An academic background in business informatics and experience lecturing suggest he pairs practical delivery with a knack for clear technical communication.
7 years of coding experience
8 years of employment as a software developer
Master's degree Business informatics, Master's degree Business informatics at Higher School of Economics
Russian, English
Github Skills (11)
tarantool10
ram9
disk8
lua8
appserver8
in-memory8
msgpack7
database7
mmap7
java-client6
java6
Programming languages (2)
Github contributions (4)
ztarvos/tarantool-java
Sep 2018 - Dec 2018
A Java client for Tarantool
Contributions:46 pushes, 39 branches in 3 months
tarantooljavajava-client
tarantool/tarantool-java
Oct 2018 - Dec 2018
A Java client for Tarantool
Contributions:8 commits, 4 PRs, 5 pushes in 2 months
tarantooljavajava-client
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