Yury D.
Private message 
Offer work 
Poltava,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
CV
I am a Senior Backend / PHP Developer with over 10 years of experience in building and evolving web applications.
I specialize in working with existing systems: quickly understanding legacy code, integrating new features, and improving products step-by-step without rewriting from scratch.
🔧 Core expertise:
— PHP / Laravel backend development + MySQL
— API development and enhancement (REST, WebSocket)
— Integrating admin panels and frontend with existing backend
— Implementing authentication, roles, and access control
— Performance optimization and database query tuning
— Stabilizing and scaling existing systems
🤖 AI / Automation:
— Integrating AI services to automate business processes
— Building solutions for automated content generation and publishing (WordPress)
— Working with AI APIs (text generation, data processing)
— Designing automation pipelines
💻 Additional skills:
— Node.js (NestJS, Express)
— WordPress (custom themes, plugins, REST API)
— Databases: MySQL, PostgreSQL, MongoDB, Redis
— Third-party integrations (APIs, payments, CRM systems)
— CI/CD, Git, Docker
🧩 Additional experience:
— Desktop development (C# / WinForms)
📌 I focus on delivering results: system stability, performance, and safe product evolution without business risks.
Open to long-term collaboration.
Skills and abilities
Programming
- AI & Machine Learning
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Bot Development
from 20 USD for hour
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C & C++
from 27 USD for hour
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C#
from 22 USD for hour
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Content Management Systems
from 22 USD for hour
- Cryptocurrency & Blockchain
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Data Parsing
from 18 USD for hour
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Databases & SQL
from 20 USD for hour
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Desktop Apps
from 27 USD for hour
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HTML & CSS
from 22 USD for hour
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Javascript and Typescript
from 20 USD for hour
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PHP
from 22 USD for hour
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Web Programming
from 22 USD for hour
Services
- AI Consulting
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Content Management
from 11 USD for hour
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Cybersecurity & Data Protection
from 33 USD for hour
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Data Processing
from 18 USD for hour
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Online Stores & E-commerce
from 22 USD for hour
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Payment Systems Integration
from 22 USD for hour
Photo, Audio & Video
- Video Creation by Artificial Intelligence
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Video Processing
from 16 USD for hour
Portfolio
-
557 USD SwapNav — Crypto Exchange Rate Navigator
Web Programming
SwapNav is a crypto exchange rate aggregator that helps users compare live rates across multiple exchangers and find the best deals in real time.
The platform includes multilingual SEO architecture, automated data fetching via cron jobs, caching layer for performance, and a responsive mobile-first UI.
… • Multilingual routing system (EN/RU/UA)
• SEO-optimized dynamic pages for currency pairs
• Cron-based data prefetching with caching layer
• API integration (BestChange)
• Mobile-first responsive UI
• Performance optimization (cache-first architecture)
Improved mobile UX and layout for better usability and conversion.
Tech stack
PHP, Custom Router, REST API, Cron Jobs, File Cache, SEO Optimization
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445 USD Patient management system for a medical institution
Web Programming
Developed on Yii with PHP and MySQL.
The system allows for patient record management: adding, editing, viewing, and deleting entries.
Main features
…
- User authorization with roles: admins and doctors with restricted access.
- Each doctor can create medical reports for their patients.
- When printing reports, a QR code is generated, which is also printed on the document.
- Scanning the QR code allows for quick access to patient information.
- The system restricts access to patients that do not belong to the doctor.
- Users can add and edit data but cannot delete others' entries.
Technologies and tools
- Yii Framework
- PHP
- MySQL
- QR code generation
- Role and access rights configuration
-
779 USD WP Event Logger — event logging system for WordPress
Web Programming
Task:
Implement a universal event logging system on the website for monitoring user actions, errors, and system processes.
What has been implemented:
…
- Developed a custom WordPress plugin for event logging
- Support for various logging levels (debug, info, warning, error, critical, etc.)
- Event logging:
user actions (login, registration, profile changes)
content changes (creation, editing, deletion of posts)
security events (failed login, suspicious activity)
PHP errors (including fatal errors)
- Implemented data storage in the database (including JSON context)
- Added an admin interface for viewing logs with filtering and search
- Implemented data export (CSV, JSON, XML)
- Implemented REST API for working with logs
Stack:
PHP, WordPress, MySQL, REST API
Features:
Scalable database structure (separate tables for events and metadata)
Flexible filtering and search system
Handling critical errors through shutdown handler
Ability to integrate with other services via API
Result:
Full control over events on the website
Simplified problem diagnosis
Increased security and stability of the project
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334 USD Conversion landing page for a marketing company
HTML & CSS
Creation of a modern selling landing page to attract clients for marketing services. Implemented blocks with descriptions of advantages, work process, video presentation, client cases, pricing packages, FAQ, and application form. The design is executed in a dark style with an emphasis on conversion and user convenience. The site is adapted for all types of devices.
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267 USD Corporate landing page for a digital agency
HTML & CSS
Development of a modern one-page website for presenting the services of a digital agency. The website includes sections: main screen, information about the company, list of services, portfolio of completed works, team, client testimonials, and contact form. The website is adapted for mobile devices and optimized for fast loading and SEO.
Reviews and compliments on completed projects 2
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Real expert -
Craft master -
Quick answers -
First-class quality -
Nice communication -
High responsibility -
Great price -
Lightning fast
Everything was done super quickly and professionally, I recommend for collaboration!
| Super! Everything was done very clearly and professionally.
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