Олексій

Alex Profile
Marchenkovsky Senior Full-Stack Developer with 14+ years of hands-on experience in the
full development lifecycle, specializing in the PHP (Laravel/Symfony/Yii) and
NodeJS(NestJS) ecosystem and modern frontend frameworks (Vue.js). Proven
F U L L S TA C K W E B D E V E LO P E R
ability to design robust architecture and implement DevOps solutions (AWS,
Digital Ocean, Terraform, CI/CD). Successful track record of leading small teams
Details (3-4 devs), performing code reviews, and delivering significant infrastructure cost
savings through optimization. Seeking a challenging role to drive complex project
Ukraine
development and lead technical excellence.
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Employment History
Junior Web Developer, katushkin.ru, Dnipro
Links M AY 2 0 1 1 — F E B 2 0 1 4

LinkedIn • Developed and maintained core backend features and logic using PHP
Telegram
(Symfony/Doctrine ORM) for a social networking platform.
• Implemented complex, data-rich interfaces for viewing user events and
locations by integrating the Yandex Maps APIon the frontend.
Skills • Contributed to UI development using jQuery, composing new, non-templated
pages from existing components to ensure feature delivery and consistency.
Backend Development
Web Developer, uteka.ua, Dnipro
Frontend Development M A R 2 0 1 4 — M AY 2 0 1 5

• Developed core backend services and marketplace logic using PHP (Yii
DevOps framework) to facilitate the online reading and distribution of digital periodicals.
• Implemented a complex, feature-rich WYSIWYG text editor with advanced
Project Management capabilities for content insertion from external sources while preserving original
formatting.
Automated tests • Engineered a specialized frontend interface featuring two synchronized virtual
tabs within a single web page.
• Solved critical state management challenges by maintaining and synchronizing
Languages two separate internal page history stores with the native browser history

Ukraine Backend Developer, TrafficDNA, Dnipro
JAN 2016 — NOV 2017

Russian • Designed and implemented backend logic using PHP (Yii framework) to
aggregate and merge ad campaign results from external sources (Google and Bing
English APIs) in real-time.
• Engineered high-performance data processing pipelines capable of handling and
merging result tables often exceeding 100,000 rows.
• Achieved critical memory optimization in core processing scripts, ensuring the
application fit within the existing server's physical RAM capacity.
• Resulted in significant infrastructure cost savings by eliminating the need to
migrate to more expensive, high-memory server architecture.

Full Stack Web Developer, Clockwise Software, Dnipro
JAN 2018 — PRESENT

• Led a major technology migration by creating a successful Proof of Concept
(POC) and securing client approval to transition the core UI from AngularJS to
Vue.js, significantly boosting UI interactivity and user efficiency.
• Architected and implemented a complete stack for a mind-health mobile
application, including Terraform-based AWSinfrastructure configuration, NestJS
backend, and the admin panel frontend (Vuetify).
• Successfully managed and executed the upgrade of multiple legacy systems
from Laravel 5.2 to Laravel 10, modernizing the codebase and enhancing security.
• Developed and deployed a custom application monitoring system with tailored
 checks to proactively identify potential instabilities and vulnerabilities across
critical system components.
• Streamlined release processes by migrating all support projects from
manual deployment to CI/CD pipelines (with quality gates and checks), enabling
zero-downtime deployment.
• Maintained close and effective communication with English-speaking clients
across all parallel projects, ensuring alignment and successful delivery.

Teach Lead, egolist.ua, Dnipro
SEP 2021 — DEC 2022

• Implemented the architectural design and infrastructure setup for the entire
marketplace, developing the robust backend using Laravel and establishing a
reusable Vue.js UI KIT for the frontend.
• Served concurrently as PM and Team Lead, managing a cross-functional team of
3 Developers and 1 QA, prioritizing the product backlog, and conducting regular
code reviews.
• Implemented HTTP tests to accurately assess system functionality and
proactively detect contract changes, ensuring seamless synchronization with the
frontend.
• Maintained close consultation with top management, providing technical
timelines and strategic prioritization for Epics to align development efforts with
business goals.

Education
Bachelor, Dnipro National University of Railway Transport, Dnipro
SEP 2007 — MAR 2013

Specialty: Software for automated systems