Jurij

Krivonosa Maksyma, Kyiv, Ukraine
+3093 907 87 98 · [відкрити контакти](див. вище в блоці «контактна інформація»)

Jurij Leshchuk, Back End Developer PHP
Experienced Backend Developer with 5+ years of experience in
developing scalable and high-performance web applications.
Proficient in Symfony, PHP, SQL, and other modern
technologies. Specializing in RESTful API development,
integration with external services, and performance
optimization. Possesses experience with Magento 2 and is
ready to apply acquired knowledge to solve complex tasks.

Employment History Symfony Backend Developer at WhiteTech, Kyiv
Apr 2025 — Oct 2025

Product: Electronic Money Institution (EMI) platform for global B2B/B2C clients, handling
transactions, verification, reporting, compliance, and anti-fraud operations.

• Industry Selection During Business Registration:
Designed and implemented backend logic for assigning an industry to business users
during the registration and onboarding process.
Integrated industry selection into business verification workflows and regulatory
(Fintrac) reporting.
Updated internal data structures and administration panel accordingly.
• High-Precision Transaction Logging in Elasticsearch:
Migrated all transaction logs to support millisecond-precision timestamps for
advanced audit trails.
Adjusted log format in APIs and admin dashboards to reflect the new structure.
• Manual Top-up Approval/Rejection Logic:
Developed a feature to manually approve or reject top-up transactions via admin
tools.
Implemented mandatory reason input for each manual action and integrated logging
into the internal ActionLog system.
• Extended Reporting for Fintrac (Canada):
Added business industry data to Fintrac-compatible customer reports.
Refactored query services and report generators to support the new field.
• Bug Fixes and System Maintenance:
Actively participated in debugging and fixing critical edge cases in transaction,
verification, and top-up modules.
Collaborated closely with QA and Product teams to analyze issues and deliver stable
releases.

Technologies:

• Language & Framework: PHP 8.2+, Symfony 6 (DDD, CQRS, Event Sourcing)
• Databases: PostgreSQL, Redis, Elasticsearch
• DevOps: Docker, Kubernetes (EKS), GitLab CI/CD
• Testing: PHPUnit, Codeception, Acceptance testing (DDD)
• Integrations: IPN modules, Fintrac export, ActionLog, internal CRM
Symfony PHP Developer at Sam Solution, Kyiv
Aug 2022 — Apr 2025

Project 1: Marketplace

• Developed a scalable marketplace platform using Symfony, enabling sellers to create
their own stores and customers to make purchases.
• Implemented a recommendation system using machine learning algorithms to enhance
user experience.
• Integrated with payment gateways and shipping services to streamline the checkout
process.
• Built an admin panel for managing orders, products, and users.

Project 2: Content Management System (CMS)

• Created a flexible CMS using Symfony to manage content for various websites.
• Developed modules for creating and managing pages, blogs, and portfolios.
• Implemented multilingual support.
• Integrated with analytics tools to track user behavior.

Project 3: Food Delivery Service

• Developed a mobile food ordering app using Symfony and Vue.js.
• Implemented geolocation features to find nearby restaurants.
• Integrated with delivery services and payment gateways.
• Built a rating system for restaurants and dishes.

Project 4: Social Network

• Built a social network using Symfony and React.js.
• Implemented a news feed, chat features, and notifications.
• Developed a friend recommendation system.
• Integrated with social media platforms for authentication.

Project 6: Subscription-Based Video Platform (Microservices Architecture)
Developed a salable video streaming platform using microservices architecture with Symfony
6.
Split the application into independent services:
– User Service for authentication and profile management.
– Video Service for video upload, encoding (using a queue system), and streaming.
– Billing Service for subscription plans, payment integrations (Stripe, PayPal), and invoicing.
– Notification Service for email and in-app alerts (integrated with RabbitMQ and Laravel
queues).

Key Responsibilities:

• Designed service-to-service communication via REST APIs and Laravel HTTP Clients.
• Implemented centralized logging with Laravel Telescope and custom log channels per
service.
• Deployed services in Docker containers with individual pipelines (GitLab CI/CD).
• Used Redis and MySQL per service for efficient caching and data segregation.
• Ensured security via OAuth2 authentication (Laravel Passport) and API rate limiting.

PHP Developer at Barwenock, Kyiv
Aug 2020 — Apr 2022

Internal Project: CRM System for Office
 • Developed a CRM system to reward staff, calculate salaries, and provide educational
materials.
• Created APIs for a mobile app, set up the database, and implemented admin
functionality for managing the system.
• Technologies: Laravel, JavaScript, GitLab, REST API.

Project: Aquapolis (https://aquapolis.ua)

• Modified New Mail module logic and checkout validation, and created a feedback form
with bulk file uploads.
• Redesigned the product page similar to Amazon, restricted payment methods by user
group, and customized the Amasty PreOrder module.
• Configured the Ukrainian version of the site, translating and refining multiple modules.
• Technologies: Magento, HTML/CSS/JavaScript, Grunt, jQuery, PHP, Knockout.js,
Docker.

Project: Denova Medical (https://www.denovamedical.com)

• Updated custom modules and customized the Payfabric payment module.
• Customized email notifications for specific product groups and adjusted checkout
pop-up notifications.
• Evaluated Magento upgrade time for the latest stable version.
• Technologies: Magento, CSS, Grunt, HTML, JavaScript, jQuery, Knockout.js, PHP.

Project: Small World Toys (https://www.smallworldtoys.com)

• Customized Magento extensions and developed integrations with third-party systems.
• Designed and implemented databases, wrote cron scripts for API interactions, and
conducted code reviews.
• Technologies: Magento, PHP, MySQL, Zend Framework, HTML, CSS, JavaScript, Git.

Support for Various Magento Projects (Ecobliss, Verhaak, Goessens, Dancohr, Roman
Techno, Peyjs, Toi-Toys, Brentjeens, Profyplast, Limtrade)

• Upgraded Magento versions from 2.3.4 to 2.4.4, resolving frontend and backend
compatibility issues.
• Addressed customer page, product listing, checkout, and cart bugs, and resolved
admin panel issues such as email sending and sitemap generation.
• Technologies: Magento, PHP, HTML, Knockout.js, jQuery.

Project: Geho (https://geho.nl)

• Extended the Amasty_ExtraFee module to calculate custom product fees and tax based
on specific rules.
• Developed a custom registration process allowing users to select different shipping
addresses.
• Technologies: Magento, PHP, HTML, JavaScript, jQuery.

Project: Leurs (https://leurs.nl)

• Created custom filters for shop selection based on brand, region, and country,
extending the Amasty_GeoIp module.
• Technologies: Magento, PHP, HTML, JavaScript, jQuery.

Education Master, Kyiv National University of Construction and Architecture, Kyiv
Sep 2011 — Jun 2018