Alex Efremov
Team Lead IT Manager at РТК ИТ
Arzamas, Nizhniy Novgorod, Russia
Summary
🤩
Rockstar🎓
Top SchoolAlex Efremov is a Java/Kotlin engineer and team lead with eight years of experience building and operating backend systems and microservices across enterprise and telecom ecosystems. Currently leading development teams at hh.ru and contributing to Rostelecom's microservice landscape, he combines hands-on coding with product launches and long-term support of large services. His open-source work on automatic differentiation for C/C++ (contributions to clad) shows a comfort with low-level algorithmic optimization in addition to JVM-based systems. Trained in computer science and telecommunications, Alex is skilled at translating complex requirements into maintainable architectures while mentoring teams to deliver reliable production software.
8 years of coding experience
1 year of employment as a software developer
Бакалавр, Информатика, Бакалавр, Информатика at Нижегородский Государственный Университет им. Н.И. Лобачевского (ННГУ)Техник, Компьютерные сети и телекоммуникации, Техник, Компьютерные сети и телекоммуникации at АПК им. П.И.Пландина
Github Skills (6)
automatic-differentiation10
c-language10
cprogramming-language10
differentiation10
gradient10
llvm9
Programming languages (5)
Github contributions (5)
vgvassilev/clad
Jun 2018 - Sep 2020
clad -- automatic differentiation for C/C++
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 40 commits, 40 PRs in 2 years 4 months
Contributions summary:Alex primarily contributed to the development of automatic differentiation capabilities for C/C++ code within the `clad` repository. Their work involved implementing reverse mode gradient computations and adding support for if statements and conditional operators. They made several changes, including optimizations such as removing unnecessary cloning and storing intermediate results in variables, which improved the codebase's efficiency. The user also added functionality to handle function calls and array subscripts.
cppclang-compilerautomatic-differentiationdifferentiationderivative-functions
efremale/clad
Jun 2018 - May 2019
clad is a C++ plugin for clang that implements automatic differentiation of user-defined functions by employing the chain rule in forward mode, coupled with source code transformation and AST constant fold.
Contributions:309 pushes, 43 branches in 11 months
transformationcppchain-ruleclangdefined
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