You will get expert Web3 DApp maintenance, bug fixes, and feature updates
Project details
Is your Web3 application failing to connect wallets, showing incorrect data, or running on outdated libraries? Don't let technical debt and legacy code kill your project's growth.
I am a Full-Stack Web3 Engineer with over 5 years of experience specialized in debugging, maintaining, and scaling existing DApps. I have a proven track record of jumping into complex, enterprise-grade legacy codebases and fixing critical issues that others couldn't solve.
How I can help:
• Fixing Web3 wallet connection issues (MetaMask, WalletConnect, etc.).
• Debugging smart contract interactions and gas optimization.
• Upgrading outdated libraries (e.g., migrating from Web3.js to Ethers.js/Wagmi).
• Refactoring messy code for better performance.
• Adding new features to existing DApps without breaking current logic.
My goal is to restore your project's stability so you can focus on your users. Message me today with your project details, and let’s get it fixed!
I am a Full-Stack Web3 Engineer with over 5 years of experience specialized in debugging, maintaining, and scaling existing DApps. I have a proven track record of jumping into complex, enterprise-grade legacy codebases and fixing critical issues that others couldn't solve.
How I can help:
• Fixing Web3 wallet connection issues (MetaMask, WalletConnect, etc.).
• Debugging smart contract interactions and gas optimization.
• Upgrading outdated libraries (e.g., migrating from Web3.js to Ethers.js/Wagmi).
• Refactoring messy code for better performance.
• Adding new features to existing DApps without breaking current logic.
My goal is to restore your project's stability so you can focus on your users. Message me today with your project details, and let’s get it fixed!
Programming Languages
HTML & CSS, JavaScript, PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$100
|
Standard
$300
|
Advanced
$1,500
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 14 days |
Number of Revisions | 1 | 2 | 5 |
Bug Investigation | |||
Fix Documentation | |||
Detailed Code Comments |
Optional add-ons
You can add these on the next page.
Additional Revision
+$25
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MK
Maksut K.
Mar 12, 2026
Data Analyst: Extract Wallet Addresses from Hyperliquid
Great work! Fast, accurate. Highly recommended.
About Stanislav
Full-Stack Engineer | API Reverse Engineering | Web3 & Automation
Kharkiv, Ukraine - 8:35 am local time
I am a Full-Stack Software Engineer specializing in API reverse engineering, resilient automation architecture, and secure Web3 development. With over 5 years of commercial experience and a background in cybersecurity, I solve the technical challenges that stop other developers: bypassing sophisticated anti-bot protections, optimizing undocumented APIs, and building secure, scalable DApps.
My expertise lies at the intersection of network security and high-performance automation. I don't just build scripts; I engineer "invisible" systems that mimic human behavior and maintain 24/7 data integrity.
🔥 How I can accelerate your project:
• API Reverse Engineering & Stealth Automation: Deep analysis of network traffic (REST/WebSockets) and utilizing specialized tools (Patchright, Camoufox) to bypass antibot systems and other advanced defenses. I focus on high-speed data extraction without the overhead of heavy UI interactions.
• Full-Cycle Web3 Development: Architecting scalable DApps from scratch, integrating smart contracts (Ethers.js/Web3.js), and deploying on L2 solutions with a focus on security and gas optimization.
• Algorithmic Execution & Data Pipelines: Developing robust, low-latency systems for real-time data processing, automated workflow orchestration, and cross-platform synchronization.
• Secure Full-Stack Architecture: Building high-performance backends (Python/Node.js) and intuitive, conversion-focused frontends (React/Vue.js) that handle complex business logic seamlessly.
🛠 My Core Tech Stack:
• Advanced Automation: Playwright, Patchright, Camoufox, TLS/JA3 Fingerprinting
• Web3 & Blockchain: Smart Contract Integration, DeFi Infrastructure, Ethers.js
• Backend & Logic: Python (FastAPI/Django), Node.js, WebSockets, SQL/NoSQL
• Frontend: React, Vue.js, TypeScript
I combine a deep understanding of network layers with clean, modern execution. If you need a partner who can handle the technical "headache" of complex integrations and data delivery, let’s connect.
Steps for completing your project
After purchasing the project, send requirements so Stanislav can start the project.
Delivery time starts when Stanislav receives requirements from you.
Stanislav works on your project following the steps below.
Revisions may occur after the delivery date.
Code Review & Diagnosis
I will review your existing codebase, reproduce the reported bugs, and analyze the architecture to identify the most efficient way to fix the issue or add the new feature.
Development & Testing
I will implement the fixes or updates in a local environment, ensuring that the new code is fully compatible with your existing system and passes all security checks.