Sergei Kostiaev
Frontend Developer at Individual Entrepreneur
Izhevsk, Udmurtia, Russian Federation
Summary
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Rockstar🎓
Top SchoolSergei Kostiaev is a Frontend Developer with 11 years of experience combining web development and QA engineering, currently based in Izhevsk, Russia. He builds and tests responsive React/Node.js applications, with hands-on expertise in JavaScript/TypeScript, testing tools (Jest, React Testing Library), and browser debugging, and he actively improves unit and integration coverage. Sergei has practical API and database experience (Postgres, MySQL) and contributes to open-source testing tooling—improving test suites for the well-known gotests project. A two-time hackathon winner and national contest judge, he brings a product-minded approach to feature delivery and defect localization. He is seeking a collaborative, growth-focused team—ideally in Los Angeles—where he can continue leveling up testing practices while shipping frontend features.
11 years of coding experience
2 years of employment as a software developer
Среднее профессиональное образование Общее компьютерное программирование/Программист, Среднее профессиональное образование Общее компьютерное программирование/Программист at Izhevsk State Technical University (ISTU)Fullstack developer, Fullstack developer at NetologyFinance General, Finance General at Udmurt State University
Github Skills (5)
go10
test-driven-design10
testing10
test-automation9
code-generator8
Programming languages (14)
Github contributions (5)
cweill/gotests
Oct 2017 - Oct 2017
Automatically generate Go test boilerplate from your source code.
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:7 commits, 2 PRs, 7 comments in 18 days
Contributions summary:Sergei's primary contribution involves enhancing the testing framework and test coverage of the `gotests` project. The user's commits add new test cases, correct existing tests, and modify test configurations. Specifically, the user implemented changes to support tests for functions within test files and updated the test data directory structure.
gogolang-testingtable-driven-testtesting-toolscommandline
s-kostyaev/ellama
Oct 2023 - Apr 2025
Ellama is a tool for interacting with large language models from Emacs.
Contributions:32 reviews, 218 PRs, 585 pushes in 1 year 6 months
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