Ethereum

Vadim

Cryptocurrency & Blockchain · Website Development

10 0

5.0

5 229

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Peiko — AI & Web3 Development Company for Scalable Digital Products Peiko is a full-cycle software development company that has been helping startups, technology companies, and enterprise businesses build and scale complex digital products since 2017. Our core areas of expertise are AI solutions and Web3 products. We also have extensive experience in developing SaaS platforms, FinTech systems, marketplaces, high-load web platforms, and mobile applications. Over the years, we have successfully delivered 120+ projects for clients from the United States, Europe, and other international markets,…

0 129

Crypto exchange | DeFi Ecosystem | Node.js | React | JavaScript

Cryptocurrency & Blockchain

Welcome to the next-generation Decentralized Finance (DeFi) Ecosystem, where innovation meets functionality in the vast realm of finance. With our state-of-the-art platform, you'll be introduced to an expansive suite of features, fine-tuned to cater…

0 124

Crypto wallet KYC: Token Management | React Native

Cryptocurrency & Blockchain

Introducing our flagship Mobile Custodial Wallet, a seamless blend of convenience, security, and efficiency tailored for the modern crypto enthusiast! Let's dive deeper into what sets this application apart in the crypto-verse: Core features: - One-…

0 111

Crypto exchange | web app | PancakeSwap | Solidity | React

Cryptocurrency & Blockchain

The idea of the project was to make a fork of PancakeSwap (pancakeswap.finance), but adjust the open-source code of PancakeSwap in accordance to client's designs. We successfully did the auditing and further integration of client's own smart-…

0 106

Crypto exchange Simpleex | Crypto wallet | Laravel | React

Cryptocurrency & Blockchain

A P2P exchange for buying and selling digital assets, where users can trade digital assets. Peiko implemented digital wallets to store USDT (TRC-20), and all transaction fees are sent to the customer's wallet. Peiko also implemented a platform where…

0 89

SaaS The Aviator - online casino game | Node.js | React | PHP

Cryptocurrency & Blockchain

The Aviator game is an online casino game themed around aviation. Peiko realized such features: - Central interface for players to access the Aviator Game. - Visual elements and design that align with the aviation theme. - Functionality to place…

Sergey Ivanov

Cryptocurrency & Blockchain · Embedded Systems & Microcontrollers

36 0

1 944

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Denis

Web Programming · Cryptocurrency & Blockchain

11 0

5.0

368

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Pavlo

Cryptocurrency & Blockchain · AI & Machine Learning

8 1

966

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Senior Full-Stack Engineer with 8+ years of experience building scalable web platforms, blockchain solutions, and AI-powered applications. I help startups and businesses design, develop, and launch reliable products from concept to production. My expertise includes: • Web Development (Node.js, TypeScript, React, Next.js, NestJS, PostgreSQL, Redis, REST, GraphQL) • Blockchain Development (Solidity, Ethereum, EVM chains, Smart Contracts, DeFi, DEX, Tokenization, Web3 Integrations, Security Reviews) • AI Solutions (LLM Integration, RAG Systems, AI Agents, OpenAI, Ollama, LangChain, Knowledge…

0 118

DEX development, CEX development

Cryptocurrency & Blockchain

We can build exchange solutions, design brand new features, use latest technology.

Maks Goncharenko

Web Programming · Cryptocurrency & Blockchain

41 0

279

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As a back end developer with a passion for blockchain technology, I have gained valuable experience and skills in various projects and platforms. Previously, I worked at Everstake, a leading staking service provider, and at INC4, a blockchain technology development company, where I contributed to the open-sourced AirDAO Bridge project. I performed extensive research on challenging blockchain topics, such as ETH proof of stake, ETH slashing and penalties, and others. I also championed the importance of code quality and architecture within the team, leading by example and reminding team members…

Nikolay Semenyuta

Cryptocurrency & Blockchain · Javascript and Typescript

6 0

830

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7+ years of commercial experience in software development. 4+ years of experience in blockchain development (dApps for EVM based blockchains) Arrived as React developer then start extensive research into crypto market, DeFi, and blockchain solutions. Practical experience with Ethereum, Solidity, OpenZeppelin, React js, Truffle, Web3, Ganache, REST. Created and deployed ERC20 token smart contracts (Ethereum, Polygon nettworks, solidity). Designed and implemented frontend layer using React. js, JavaScript, CSS, HTML. Ticker module utilizing web socket channel and asynchronous API calls to…

100 USD

1 602

Metadata for 3D NFT Collection

Cryptocurrency & Blockchain

Task: Create a metadata for a full 3D display of the NFT collection in which all the images are the same. The model should be interactive both in the wallet and on the marketplace. Execution: A metadata with the necessary attributes was generated…

1000 USD

1 588

Remint Solana NFT App

Cryptocurrency & Blockchain

Prehistory: the client released a collection on a lounchpad, where he was wrongly made a metadata and confined the entire collection + did not give access to the account authority updates. Task: Create a site where the user will be able to connect…

300 USD

0 598

NFT collection on Ethereum

Cryptocurrency & Blockchain

Task: Create a NFT collection on Ethereum Implementation: After the call with the customer discussed all the points, I got layers and started the generation of images with a metadata. Further, a smart contract was created with all the wishes of…

50 USD

1 348

by Solana Airdroper

Cryptocurrency & Blockchain

Task: Write a script for the automatic sending of tokens and NFT to the Solana network to the address list.Implementation: A realised Python script based on Solana CLI with two operating modes: 1 .The user enters the token address name and the…

300 USD

1 398

ERC1155 Certificate for 01k Academy

Cryptocurrency & Blockchain

Task: Make non-transferable NFT certificates for academic students.Implementation: After consultation, the decision was made to implement certificates on the basis of the ERC1155 contract in the Polygon network.I made a contract taking into account…

Dmitro Blazhevsky

Python · Cryptocurrency & Blockchain

19 0

492

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0 211

Automation of token creation on four.meme / pump.fun

Cryptocurrency & Blockchain

Project: Automation of Token Creation on four.meme / pump.fun Stack: Python, Web3.py, AsyncIO, RPC/Websocket, SPL / EVM tooling (depending on the network) Role: Python / Blockchain Developer (Middle) Project Description Developed a tool for automated…

0 149

BSC (BEP20) Bundle

Cryptocurrency & Blockchain

Stack: Python, Web3.py / Flashbots RPC, AsyncIO Role: Backend / Blockchain Developer (Middle) Project Description Developed a service for forming, simulating, and sending transaction bundles in EVM-compatible networks (Ethereum, BSC, Polygon,…

Illia Dunaiev

Python · Cryptocurrency & Blockchain

4 0

5.0

171

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Hello, my name is Ilya, and I am an experienced freelancer with over 5 years of work experience in various fields. I am a Multi-stack Developer. I have participated in, developed various parts of, or full projects in different fields and tasks listed below. Projects: Parsing: products, data, videos, photos, and everything that can be found on the internet. Including captcha bypassing, proxy usage, etc. I have ready-made tools capable of processing more than 5 thousand requests per second, depending on the resource. Automation: browsers, applications, programs (Desktop and Mobile). Includes…

2000 USD

0 49

Lotos

Cryptocurrency & Blockchain

Worked as a backend and scraping specialist for the site lotos io. Implementing data collection from web3. Working with nodes, as well as backend work with web3.

Multi-Chain DeFi Data Pipeline (Solana / ETH / BSC)

700 USD

0 61

Multi-Chain DeFi Data Pipeline (Solana / ETH / BSC)

Cryptocurrency & Blockchain

Large-scale on-chain data collection and analytics infrastructure across three networks: Solana, Ethereum, and BSC. The goal was to build a fast, proprietary analytics database rather than relying on third-party explorers. Started with deploying…

Nikolay

Cryptocurrency & Blockchain · Javascript and Typescript

6 1

258

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Solidity token contract for a multi-level referral system

3000 USD

0 273

Solidity token contract for a multi-level referral system

Cryptocurrency & Blockchain

Fully functional token contract for any EVM network. There is a referral registration feature by nickname, after which commissions are accrued for each purchase and sale of tokens by referrals up to 7 levels and the ability to mint these commissions…

Vladislav Makovsky

Cryptocurrency & Blockchain · Javascript and Typescript

0 0

226

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Developer of blockchain applications (Solidity, NODE JS)Experience: Developer of open source blockchain applications on Ethereum, BSC, TRON, and other blockchains. Development of smart contracts in Solidity, including tokens, NFTs, decentralized exchanges, and other applications. Development of web applications on NODE JS using WEB3. Integration of smart contracts with other applications and systems. Experience working in the outsourcing blockchain company DECENTRAL, where I worked as a developer of blockchain applications and smart contracts on Ethereum.Education: Bachelor's degree in…

Desktop application for wallet management and for multi-accounting

10 000 USD

0 125

Desktop application for wallet management and for multi-accounting

Cryptocurrency & Blockchain

A desktop application has been developed and created for operating systems Windows/Linux/iOS. The application provides management, monitoring, addition, and deletion of EVM private keys. Registration and obtaining an API key through a Telegram bot,…

0 332

Smart contracts created for a real estate investment platform.

Cryptocurrency & Blockchain

These contracts allow users to invest their funds in real estate and receive profit from the sale of the property. The tokens we have created represent your right to a share in this property, and the contracts ensure that your investments are safe…

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