Aliaksei Chapyzhenka
Principal Engineer at SiFive
San Jose, California, United States
Summary
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Rockstar🎓
Top SchoolAliaksei Chapyzhenka is a Principal Engineer based in San Jose with three decades of expertise in HDL design, ASIP/ADSP development, SoC IP automation, and communication PHY DSP architectures. He blends deep hardware microarchitecture work—especially stack processors, systolic arrays and reconfigurable/superpipelined designs—with compiler and toolchain engineering, currently contributing to LLVM/CIRCT and building future HDL IR at SiFive. His background spans end-to-end SoC development from antenna and RF prototyping to compiler-backed code generation for RISC-V Vector processors, reflecting rare full-stack silicon-to-software fluency. He has led teams delivering configuration-driven SoC interconnects, high-level HDLs and performance modeling, and continues to influence RISC-V standardization groups. An early implementer of custom DSP processors and distributed MIMO PHYs, he brings both research-level signal-processing insight and practical production RTL, tooling, and front-end contributions (including to well-known open-source projects like CIRCT and WaveDrom).
12 years of coding experience
16 years of employment as a software developer
PhD Study Digital Signal Processing, PhD Study Digital Signal Processing at Belarusian State University of Informatics and Radioelectronics
English, Russian, Russian
Stackoverflow
808reputation
60kreached
2answers
2questions
Github Skills (20)
verilog10
javascript10
llvm10
firrtl10
mlr10
front-end-development10
rt10
html10
bitwise9
gruntjs9
g9
bit9
web-development9
svg6
asic6
Programming languages (27)
Github contributions (5)
wavedrom/wavedrom.github.io
May 2014 - Jan 2023
Digital timing diagram editor
Role in this project:
Front-end Developer
Front-end DeveloperContributions:24 releases, 236 commits, 8 PRs in 8 years 9 months
Contributions summary:Aliaksei was involved in the initial setup and development of the user interface for a digital timing diagram editor. The commits show the creation of the main index file and a tutorial page. These commits focus on the creation of HTML pages with links to the editor and documentation sections. They focused on implementing fundamental HTML structures.
diagram-editorjavascripttiming-diagrameditordiagram
wavedrom/wavedrom
May 2014 - Jan 2023
:ocean: Digital timing diagram rendering engine
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 release, 412 commits, 26 PRs in 8 years 10 months
Contributions summary:Aliaksei's commits primarily focused on making minor clean-up changes and restructuring the HTML for an impress presentation, suggesting a focus on user interface (UI) modifications and front-end development. A key contribution was the addition of a Gruntfile.js and associated Grunt configuration indicating they were involved in build processes and front-end build workflows. The commits also included jshint configurations and fixes to Javascript code, demonstrating skills in JavaScript, which is likely used in front-end code.
rendering-enginesvgoceanplotterrendering
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