Ivan Hetman
Ukraine
Summary
🤩
Rockstar🎓
Top SchoolIvan Hetman is a senior software engineer and team leader from Ukraine with 11 years of experience building Java-based systems and leading engineering teams across companies like EPAM, N-iX and SD Solutions. He combines deep academic training—a PhD in Geometry and Topology and an MSc in Statistics—with practical expertise in Java, Oracle/PostgreSQL, and optimization/mathematical algorithms to solve complex backend and performance problems. As an active contributor to the TeaVM project, he has implemented core Java library features and browser Canvas/JS interfaces, demonstrating a knack for cross-compiling JVM semantics to JavaScript/WebAssembly. Comfortable across Windows and Linux development environments and fluent with IntelliJ/Eclipse toolchains, he excels at turning formal algorithmic ideas into production-ready code. Colleagues value him for bridging rigorous mathematical thinking with pragmatic engineering and for shipping subtle language-level fixes that improve developer-facing APIs.
11 years of coding experience
11 years of employment as a software developer
Doctor of Philosophy (PhD), Geometry and Topology, Doctor of Philosophy (PhD), Geometry and Topology at Lviv Ivan Franko National University
English, German, Ukrainian, Russian
Github Skills (12)
javas10
streams-api10
javascript10
api10
java10
streaming-api10
aot9
jvm9
webassembly9
canvas2d8
canvas8
canvasjs8
Programming languages (5)
Github contributions (5)
konsoletyper/teavm
Jun 2020 - Dec 2022
Compiles Java bytecode to JavaScript, WebAssembly and C
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:83 reviews, 22 commits, 120 PRs in 2 years 6 months
Contributions summary:Ivan primarily contributed to the core functionality of the TeaVM project. They implemented missing methods and features within the core Java library, including additions to `Optional`, `ArrayList`, and `HashMap`. The user also worked on improvements to the `Stream` API, specifically addressing issues in `min` and `max` functions, and implemented new methods in the `Collectors` class. Furthermore, the user made additions to the JS interfaces and added missing methods to the Canvas API.
javascriptjava-bytecodebytecodecompilerjvm
Ihromant/heroes3-utils
Nov 2020 - Aug 2024
Contributions:151 pushes, 1 branch in 3 years 8 months
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