Alexey Semenyuk
Technical Lead Senior Software Engineer at Instinctools
Kazakhstan
Summary
🤩
Rockstar🎓
Top SchoolAlexey Semenyuk is a Technical Lead and Senior Software Engineer with 11 years of experience building robust back-end systems and leading engineering teams from Kazakhstan. He combines hands-on compiler and tooling expertise—contributing to rust-lang and Clippy lints—with enterprise delivery as a lead at Instinctools and prior full‑stack roles at Klika Tech and EPAM. An open-source maintainer for both the Rust project and LF Decentralized Trust, he brings deep familiarity with language tooling, code quality, and decentralized systems. His work spans low-level compiler fixes and higher-level Java library improvements (cactoos, EO), showing a rare mix of systems-level precision and pragmatic refactoring skills. Colleagues rely on him for clarifying tricky lint behavior and shipping tests that improve cross‑platform reliability.
11 years of coding experience
9 years of employment as a software developer
Bachelor's degree, Information Technologies Software, Bachelor's degree, Information Technologies Software at Belarusian State University of Informatics and Radioelectronics
English
Stackoverflow
3,283reputation
312kreached
85answers
10questions
encoding
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spring
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maven
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java
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Github Skills (32)
oop10
maintenance10
oop-library10
testing10
clippy10
object-oriented-programming10
oop-principles10
java10
java-libraries10
javas10
lang10
compiler-compiler10
code-cleanup10
compiler10
linting10
Programming languages (16)
Github contributions (5)
yegor256/cactoos
Jun 2017 - Jan 2023
Object-Oriented Java primitives, as an alternative to Google Guava and Apache Commons
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 14 commits, 15 PRs in 5 years 7 months
Contributions summary:Alexey primarily focused on enhancing and maintaining the `cactoos` Java library, as evidenced by the commits optimizing existing functionalities and adding new classes. The contributions included implementing a `SplitText` class for text manipulation, refactoring existing code, and fixing various bugs. The user also demonstrated a proficiency in working with core Java concepts and the library's underlying design principles.
commonsgoogle-guavajava-libraryapacheoop-library
objectionary/eo
Dec 2016 - Aug 2022
EOLANG, an Experimental Pure Object-Oriented Programming Language Based on 𝜑-calculus
Role in this project:Back-end Developer
Back-end DeveloperContributions:2 reviews, 19 commits, 14 PRs in 5 years 9 months
Contributions summary:Alexey primarily contributed to refactoring and improving the EO compiler, focusing on Java code improvements within the `eo-compiler` module. They updated the `Tree` and `ObjectBody` classes by refactoring code and introducing Cactoos primitives. The user also added tests to the `Tree` class to ensure code functionality and incorporated changes to the `JavaClassTest` and `JavaInterfaceTest` files, showcasing involvement in code testing and compilation aspects.
calculusobject-oriented-programmingcompilereolangoriented-programming-language
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