Oleksandr Kostylev
Backend Tech Lead at BetterMe
Kyiv, Ukraine
Summary
👤
Senior🎓
Top SchoolOleksandr Kostylev is a Backend Tech Lead with 11 years of software engineering experience and 7+ years focused on web development, currently leading backend at BetterMe. He specializes in PHP-driven architectures (Laravel, Symfony components) and building high-performance distributed systems using RabbitMQ, Redis, ClickHouse and relational databases. Oleksandr applies strong design principles (OOP, SOLID, KISS, EDA) and TDD practices to deliver scalable APIs (REST/JsonAPI/OpenAPI) and secure integrations (OAuth, LTI). He has led teams at Unicheck and Turnitin, contributing domain knowledge in ed-tech integrations and payment systems while maintaining hands-on code review and CI/CD quality controls. Comfortable across Java tooling and search platforms like Solr, he combines deep backend craftsmanship with practical operational experience (Docker, monitoring, build pipelines). Peers describe him as organized, independent, and analytical, with a knack for turning complex distributed requirements into maintainable, well-documented solutions.
11 years of coding experience
10 years of employment as a software developer
Bachelor of Engineering (B.Eng.), Computer engineering, 4.63/5, Bachelor of Engineering (B.Eng.), Computer engineering, 4.63/5 at Chernihiv State Technological UniversityGeneral secondary education, Mathematics, 9.7/12, General secondary education, Mathematics, 9.7/12 at UA, Chernihiv, School #28
English, Russian, Ukrainian
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (16)
moodle10
plugin10
twig-extension9
twig7
monolog7
php7
elastic-common-schema6
laravel-package5
laravel5
logging5
localization4
laravel-localization2
filebeat2
code-coverage1
ckfinder1
Programming languages (2)
Github contributions (5)
unicheck/moodle-plagiarism_unicheckcorp
Dec 2017 - May 2021
Unicheck Moodle Plugin
Contributions:34 releases, 4 reviews, 79 commits in 3 years 5 months
moodleunicheckpluginplagiarism
betterme-dev/symfony-messenger-enqueue-transport
Jul 2024 - Mar 2026
Uses Enqueue with Symfony's Messenger component.
Contributions:1 release, 1 PR, 4 pushes in 1 year 7 months
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