Olzhas Arystanov
Senior Backend Engineer at Reef Technologies
Bangkok, Thailand
Summary
👤
Senior🎓
Top SchoolOlzhas Arystanov is a Senior Backend Engineer with 11 years of experience building scalable APIs, distributed pipelines, and payment-integrated platforms, currently leading backend work at Reef Technologies from Almaty. He has a strong track record decomposing monoliths into microservices, optimizing test suites and runtime, and implementing complex business logic for fintech, gaming, and credit-scoring systems. As a former back-end team lead, he blends hands-on development with architecture and delivery ownership, having improved maintainability and test coverage across multiple products. He also contributes to open source localization, adding Kazakh language support to the popular num2words library—a hint of his attention to correctness and internationalization. With a finance background and early career roles in risk and asset management, he brings domain sensitivity to data-driven backend solutions.
10 years of coding experience
10 years of employment as a software developer
Bachelor's degree Finance General, Bachelor's degree Finance General at KIMEP UniversityNational School of Physics & Math (FIZMAT)
Russian, Kazakh, English
Stackoverflow
946reputation
31kreached
42answers
0questions
Github Skills (11)
localization10
python10
testing10
django-templates6
cors6
redoc6
drf-yasg6
swagger6
django-cors-headers6
django-rest-framework6
django6
Programming languages (12)
Github contributions (5)
savoirfairelinux/num2words
Jan 2020 - Jan 2020
Modules to convert numbers to words. 42 --> forty-two
Role in this project:
Back-end Developer & Localization Specialist
Back-end Developer & Localization SpecialistContributions:5 commits, 1 PR, 1 comment in 5 days
Contributions summary:Olzhas primarily contributed to adding Kazakh language support to the `num2words` library. This involved implementing the `lang_KZ.py` module, which includes number-to-word conversion logic for the Kazakh language. They also added Kazakh tests to ensure the correctness of the implementation, and updated the README file to include Kazakh in the list of supported languages. Furthermore, the user appears to have made code style improvements.
pythoncamelcasewordsconvert-numbers-to-wordsnumbers-to-words
olzhasar/olzhasar.github.io
Jun 2019 - Dec 2022
Personal blog
Contributions:53 commits, 8 PRs, 125 pushes in 3 years 6 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.