Vlad Tolmachov's Work | ContraWork by Vlad Tolmachov
Vlad Tolmachov

Vlad Tolmachov

Full-Stack & Web3 Developer building Telegram bots, Mini App

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Cover image for Admin Dashboard & Payment Management
Admin Dashboard & Payment Management System Designed and developed a full-stack admin dashboard for managing users, transactions, payments, withdrawals, and platform settings. The system provides administrators with a clear overview of platform activity and allows them to manage financial operations from one secure interface. Key features: • User management and account status controls • Deposit and withdrawal request processing • Transaction history and payment tracking • Role-based admin access • Dashboard analytics and statistics • Search, filters, and status management • Email and Telegram notifications • Audit logs and activity tracking • Secure authentication • Responsive interface • REST API and database integration • VPS deployment and maintenance My role included frontend development, backend API development, database design, authentication, admin logic, testing, deployment, and ongoing improvements.
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Cover image for Telegram Crypto Exchange Bot

A full-featured
Telegram Crypto Exchange Bot A full-featured OTC and P2P crypto trading bot built for Telegram, with wallet functionality, escrow-protected deals, real-time chat, transaction tracking, and a complete admin dashboard. The platform was designed to provide users with a fast and convenient way to buy, sell, and manage crypto directly inside Telegram. Key Features Crypto wallet integration P2P marketplace for buying and selling assets Escrow system for secure transactions Active, completed, and cancelled deal tracking Built-in support chat User profiles and security settings Deposit, withdrawal, and transfer functionality Multi-currency support Notifications and transaction history Admin dashboard for users, deals, withdrawals, and support tickets Analytics for transaction volume, active users, and platform fees My Role I worked on the full product flow, including: Telegram bot development Backend architecture Database structure Wallet and transaction logic P2P deal workflow Escrow logic Chat and notification systems Admin dashboard functionality Testing, deployment, and maintenance Tech Stack Python aiogram PostgreSQL Telegram Bot API REST APIs Linux VPS Docker Secure Telegram-based crypto trading with wallets, P2P deals, escrow, chat, and admin controls.
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Cover image for Crypto Arbitrage Dashboard
Designed and developed
Crypto Arbitrage Dashboard Designed and developed a real-time cryptocurrency arbitrage dashboard for monitoring price differences across multiple exchanges. The platform helps users identify potential trading opportunities by comparing prices, spreads, trading volume, liquidity, and deposit or withdrawal availability. Key features: • Real-time exchange price monitoring • Cross-exchange spread calculation • Multiple exchange API integrations • Trading pair and liquidity filters • Deposit and withdrawal status tracking • Spread calculator • Responsive dashboard • Automated data collection and processing • VPS deployment and maintenance My role included frontend development, API integration, backend logic, data processing, testing, and deployment.
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Cover image for Web3 & Full-Stack Development Portfolio
Description:

A
Web3 & Full-Stack Development Portfolio Description: A showcase of my work in Web3, Telegram development, crypto tools, dashboards, backend systems, and automation. This portfolio includes: Andr1ko Exchange Bot — an OTC/P2P Telegram bot with wallet functionality, escrow, deals, chat, and an admin panel. LudickDAO Arbitrage Platform — a real-time crypto arbitrage dashboard for monitoring spreads across multiple exchanges. Crypto Landing Page — a modern Web3 landing page designed for DeFi and blockchain products. Admin Dashboard — a management panel for users, transactions, withdrawals, analytics, and system settings. Web3 Tools — wallet checker, token tracker, airdrop checker, and blockchain network status tools. Sniper Bot — a Telegram bot for tracking new tokens, liquidity, taxes, and market activity. My main stack includes JavaScript, TypeScript, React, Next.js, Node.js, Python, Telegram API, Web3.js, Ethers.js, PostgreSQL, MongoDB, Docker, Linux, and VPS deployment. I focus on clean UI, reliable backend architecture, fast performance, secure integrations, and practical products built for real users.
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