Aleks-daniel Jakimenko-aleksejev
Founder at Technology First OÜ
Tallinn, Harju maakond, Estonia
Summary
🤩
Rockstar🎓
Top SchoolAleks-daniel Jakimenko-aleksejev is a founder and experienced software engineer based in Tallinn with 12 years building backend systems, compilers, VMs, and full-stack products across startups and scale-ups. He co-founded and leads technology initiatives at multiple ventures while previously contributing as a senior engineer at Bolt, Sensor Tower, and Video Game Insights, demonstrating a blend of product-minded leadership and hands-on coding. A deep open-source contributor to the Raku ecosystem, he has improved the Rakudo compiler, NQP, and MoarVM—adding language operators, fixing core grammar bugs, and tackling VM-level compatibility and build issues. His background in computer and systems engineering (TalTech) complements practical team leadership and release engineering experience, and he often surfaces subtle infrastructure fixes that improve cross-platform developer workflows. Not obvious from titles alone: he pairs low-level systems work (JIT/VM and compiler tweaks) with documentation and UX-minded fixes in docs and search, bridging developer experience and core runtime reliability.
12 years of coding experience
5 years of employment as a software developer
Master's degree, Computer and Systems Engineering, Master's degree, Computer and Systems Engineering at TalTech – Tallinn University of TechnologyBachelor's degree, Business Information Technology, Bachelor's degree, Business Information Technology at Tallinn University of Technology
Stackoverflow
10,485reputation
5.0mreached
205answers
0questions
unix
top-5%
loops
top-5%
numeric
top-5%
linux
top-5%
shell
top-5%
validation
top-5%
Github Skills (38)
jvm10
rakudo10
compiler-development10
bash10
build-system10
nqp10
c1110
c1710
vms10
raku10
jit10
unix9
command-line-arguments9
javascript9
openbsd9
Programming languages (27)
Github contributions (5)
Raku/doc
Dec 2015 - Feb 2020
🦋 Raku documentation
Role in this project:
Technical Writer & Documentation Specialist
Technical Writer & Documentation SpecialistContributions:256 commits, 67 PRs, 235 pushes in 4 years 1 month
Contributions summary:Aleks-daniel primarily contributed to the improvement and refinement of the Raku documentation. They fixed typos, corrected code examples, and addressed formatting issues to enhance clarity and accuracy. Furthermore, they enhanced the documentation by linking to the license, adding an access key for the search input, and making changes to the search result appearance. Their contributions focused on improving the user experience and overall quality of the documentation.
documentation-generatorrakureferencedocumentation-site
rakudo/rakudo
Dec 2016 - Jan 2022
🦋 Rakudo – Raku on MoarVM, JVM, and JS
Role in this project:Back-end Developer & Core Language Contributor
Back-end Developer & Core Language ContributorContributions:96 releases, 26 reviews, 421 commits in 5 years 1 month
Contributions summary:Aleks-daniel made multiple contributions to the Rakudo Raku compiler. The user focused on fixing bugs related to language features, correcting code, and enhancing error messages within the Perl 6 grammar. The user also added new Unicode operators and operators to the core language, as well as contributing to the removal of deprecated or obsolete code. The work involved modifications to the core language files and grammar files, improving the compiler's functionality and user experience.
rakudorakujavascriptmoarvmjvm
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