Oleksandr Meleniuk
Offer Oleksandr work on your next project.
Private message 
Offer work 
Ternopol,
Ukraine
4 days 5 hours back
available for hire
3 Safes completed
5 months 12 days back
1 client
5 proposals made
age 29 years
on the service 8 years
Rating
Language proficiency level
Українська: fluent
Skills and abilities
Portfolio
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2255 USD Advertising marketplace in Telegram with full automation
High-load platform for direct advertising sales in Telegram channels, built as an engineering marketplace rather than a regular catalog.
The project automates the entire cycle of working with Telegram advertising: from connecting the channel and verifying statistics to launching campaigns, payments, and analytics.
… Technological complexity
• Custom backend architecture (without CMS and templates)
• Asynchronous event processing and task queues
• Integration with Telegram API and statistics collection
• Processing large volumes of data in real-time
• Role, access, and financial limitation system
• Protection against fraud, statistics manipulation, and abuse
Key features
• Automatic connection of Telegram channels
• Dynamic pricing and slot management
• Launching advertising campaigns without manager involvement
• Balance, holds, transactions, operation history
• Status, confirmation, and notification system
• Advanced admin panel with logs and monitoring
Analytics and control
• Real metrics of reach and effectiveness
• Monitoring active campaigns in real-time
• Detection of anomalies and suspicious activity
• Scaling without loss of stability
Reliability and scalability
• Protection of financial operations
• Fault-tolerant logic
• Preparation for high-load traffic
• Flexible architecture for further integrations
Result
The platform is implemented as a full-fledged SaaS product, ready for:
• scaling,
• commercial operation,
• working with large budgets and traffic volumes.
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1804 USD Marketplace of products for artificial intelligence
Online platform for selling and publishing prompts for AI tools (ChatGPT, Midjourney, Claude, and others), implemented in the format of a marketplace / bulletin board.
The project is aimed at both prompt authors and buyers, with a full cycle of interaction — from publication to payment and access to content.
… Functionality
• Catalog of prompts with categories, tags, and filters
• Prompt cards with descriptions, ratings, reviews
• Purchase system and access control to content
• Cart, prices, paid and free prompts
• User cabinet (buyer / author)
• Admin panel for moderation, content management, and user management
Architecture
• Custom platform logic (without ready-made CMS)
• Modular structure (content, sales, payments, users, moderation)
• Optimization for a large catalog (pagination, filters, caching)
• UI in the style of modern SaaS / marketplace with an emphasis on speed and convenience
Technologies and stack
• Backend: PHP (custom engine)
• Database: MySQL
• Database interaction: PDO + MySQLi (prepared statements, secure transactions)
• Architectural approaches: MVC, service layer, repositories
• API integrations: REST approach for modules/payments/cabinet
• Security: protection against SQL Injection / XSS / CSRF, server-side validation, role control
Purpose
The platform is created as a commercial product that allows:
• monetizing AI prompts,
• launching your own marketplace,
• scaling content and authors,
• operating as an independent service.
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2706 USD Online cinema with automatic content filling
PHP
A fully functional online cinema website, developed from scratch with a focus on complex automated parsing of video content from external sources.
The key feature of the project is a multi-level parsing system that works with websites on heavy frameworks and dynamic technologies (SPA, protected structures, JS rendering).
… Technological part
• Backend: PHP / MySQL (custom engine)
• Asynchronous and background parsing
• Bypassing dynamic rendering and complex page structures
• Working with unstable sources and frequent layout changes
• Task queues, retries, error control
Platform functionality
• Automatic filling of the movie and series catalog
• Parsing of descriptions, posters, seasons, episodes, video quality
• Content updates without administrator involvement
• Categories, genres, filters, search
• Optimized interface for a large catalog
Stability and protection
• Protection against source blocking
• Request masking and logic rotation
• Minimizing server load
• Logs, monitoring, and recovery from failures
Result
The project is implemented as a stable high-load platform capable of:
• processing large volumes of data,
• working with unstable sources,
• scaling without loss of performance.
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2706 USD Individual e-commerce platform (Custom Engine)
Online Stores & E-commerce
TOK — individual e-commerce platform (Custom Engine)
This is a fully custom e-commerce project developed from scratch, without the use of ready-made CMS or template solutions. The project features a proprietary engine, custom architecture, and unique design created for specific business tasks.
… Technologies
• Backend: PHP (custom MVC), MySQL
• Frontend: HTML / CSS / JavaScript
• Architecture: proprietary module logic, independent of CMS
• Optimization, caching, protection at the logic and query level
Functionality
• Full-fledged online store (wholesale + dropshipping)
• Product catalogs, filtering, search
• Cart, order processing, statuses
• Customer personal account
• Admin panel for managing products, orders, and logistics
Integrations
• Payment systems, including Liplay
• Integration with Nova Poshta by TTH
(creation, tracking, delivery automation)
• Preparation for scaling and connecting new services
Security
• Protection against SQL injections, XSS, CSRF
• Server-side data validation
• Access and role control
• Optimized query logic and data processing
Business orientation
The project is created as a working commercial product, focused on:
• selling batteries,
• wholesale clients,
• dropshipping model,
• stable operation under load.
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2500 USD Drain 120,000 + online courses
PHP
KURS-AR — an online platform with a paid subscription, lessons, a personal account, and a partner system
KURS-AR is a comprehensive system for selling online courses in the format of a paid subscription. The platform allows users to subscribe, gain full access to educational materials, and manage their profile in a convenient personal account. The project is developed entirely from scratch, including architecture, UX/UI, backend, admin panel, and payment integrations.
… 1. Paid subscription for access to courses
Connected online payments (instant charge and activation).
Flexible pricing system: monthly, quarterly, or individual plans.
Automatic subscription renewal (optional).
Subscription status check and access restrictions upon expiration.
2. Access to educational materials
Catalog of courses and individual lessons.
Closed content that opens only after payment.
Protection of videos and educational materials from unauthorized access.
Ability to add new content without restructuring the website.
3. User personal account
Viewing active subscription and payment history.
Full access to courses included in the plan.
Learning progress (optional).
Editing data, changing password, managing account.
4. Partner system
Separate partner account with detailed statistics.
Generation of referral links.
Commission accrual system from paid subscriptions.
Traffic, conversion, and payout control mechanism.
5. Admin panel
Convenient and intuitive control panel:
Management of courses, lessons, and media files.
Adding/editing subscription plans.
User and partner control.
Viewing payment statistics and referral activity.
Logging and monitoring system.
Technical specifications
Responsive modern design.
High loading speed.
Protection against bots, subscription bypass attempts, brute force, and scanners.
SEO optimization, structured data.
Ability to expand functionality for future modules.
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271 USD Telegram bot for online store
Bot Development
This is an automated online store in Telegram that allows you to quickly and securely purchase accounts. Key features:
Flexible admin panel – management of categories, products, users, and other settings.
Balance top-up – payment via USDT.
… Automated purchase – after payment, the product is instantly issued to the buyer.
Convenience and security – all operations are performed directly in Telegram without third-party services.
The bot is perfect for those looking for a convenient way to buy and sell Telegram accounts.
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226 USD Cryptocurrency tracking website
PHP
Crypto Exchange Monitoring
This is an online platform for monitoring cryptocurrency rates on various exchanges with the ability to automatically update prices. Key features:
Market monitoring – automatic updates of cryptocurrency rates taking into account specified fees.
…
Flexible administration – through the admin panel, new coins, exchanges can be added, and the markup on the rate can be adjusted.
Own exchange – a separate section for internal cryptocurrency exchange operations.
Automatic updates – the system regularly checks and updates rates, providing current data for traders.
Multilingualism - the site supports over 11 languages, with the ability to quickly add/remove a language.
Optimized design and SEO.
This site is perfect for traders, arbitrageurs, and anyone looking to quickly find profitable opportunities for cryptocurrency exchange.
Reviews and compliments on completed projects 3
23 December 2025
474 USD
Online store for wholesale and dropshipping sales from its closed cabinet - part 3 continuation
Quality
Professionalism
Cost
Contactability
Deadlines
next part design, Dashboard, in the process of pre-development. We are closing. 3 more final main parts ahead
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19 December 2025
474 USD
Online store for wholesale and dropshipping sales from its closed cabinet - part 2 continuation
Quality
Professionalism
Cost
Contactability
Deadlines
Part 2 (of 6 parts) of the project is completed. Let's move on. Hoping for a successful finishing end)
19 December 2025
474 USD
Online store for wholesale and dropshipping sales from its private cabinet
Quality
Professionalism
Cost
Contactability
Deadlines
The initial part of the project consisting of 6 parts is completed. Everything is good. I hope it will be like this until the very end of the project.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Creation of an online store (WooCommerce)
609 USD
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Telegram Bot
609 USD
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Development of a language web application with learning logic, tests, and an admin panel
6971 USD
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Website for a company that applies protective film to the windows of apartments, houses, and commercial properties.
609 USD
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Need a business card website for metalworking
451 USD
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Remove the pricing section from the website
23 USD
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Create a TAROT chatbot
113 USD
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Webapp
226 USD
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Website creation
609 USD
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Develop a website
226 USD
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