Aleksei Efimov
Senior Backend Developer at Onside.io
Saint Petersburg, Saint Petersburg, Russia
Summary
👤
Senior🎓
Top SchoolAleksei Efimov is a senior backend developer and technical leader with over 10 years of experience delivering scalable, production-grade systems. He blends hands-on engineering with architecture strategy, guiding microservices, domain-driven design, and CQRS to transform legacy monoliths into modular, maintainable platforms. Proficient in Node.js, TypeScript, NestJS, GraphQL, and Temporal.io, he is expanding into Rust and applying AI-assisted tooling like Cursor to boost code quality and velocity. His work spans fintech KYC, logistics, government solutions, and Web3 gaming, with a track record of mentoring teams and delivering cross-functional integrations across time zones. Based in St. Petersburg, Russia, he holds a master's degree from Saint-Petersburg State University of Industrial Technologies and Design and is currently driving backend excellence at Onside.io.
10 years of coding experience
12 years of employment as a software developer
College of informational technologies of Saint-PetersburgMaster's degree, Master's degree at Saint-Petersburg State University of Industrial Technologies and Design
English, Russian, Turkish
Github Skills (23)
migrations10
migration-tool10
node-js9
migration9
typescript8
javascript8
nodejs8
queue7
queueing6
cosmos-db5
postgresql5
gremlin4
postgres4
logger4
logging3
Programming languages (2)
Github contributions (5)
alefi/logger
Jun 2018 - Jul 2023
Nodejs logger with label, childs, tags, applicationId and request context support
Contributions:4 PRs, 17 pushes, 2 branches in 5 years 1 month
nodejs-loggerrequest-contextloggerloggingnodejs
alefi/nestjs-microservices-interaction-solution
Aug 2023 - Feb 2025
Contributions:56 pushes, 1 branch in 1 year 6 months
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