web developer Solidity python telegram bot web3 golang ethereum cryptocurrency telegram python bot Node.js
Vadim

Vadim

Ukraine Plus

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,…
Crypto exchange | DeFi Ecosystem | Node.js | React | JavaScript
123
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…
Crypto wallet KYC: Token Management | React Native
114
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-…
Crypto exchange | web app | PancakeSwap | Solidity | React
107
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-…
Crypto exchange Simpleex | Crypto wallet | Laravel | React
101
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…
SaaS The Aviator - online casino game | Node.js | React | PHP
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…
Anastasiia

Anastasiia

Ukraine

Web Programming · Cryptocurrency & Blockchain

20 0
5.0
432
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ITZeyz — Building Scalable, Future-Proof Digital Products We turn complex ideas into scalable, tech-driven solutions. We are an ambitious IT team specializing in web, mobile, and blockchain solutions — building scalable products that automate processes and drive efficiency. ✅ We operate officially, provide contracts, and guarantee transparent collaboration. Flexible payment options for your convenience — we accept all major types of payments. Why ITZeyz? 8+ years of experience in developing successful products; Market trust – more than 50 web platforms, mobile apps, and blockchain systems…
Vladislav Gostiuc

Vladislav Gostiuc

United Kingdom

Web Programming · Cryptocurrency & Blockchain

5 1
5.0
711
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I'm a Full Stack Developer with 9+ years of experience building scalable Web and Mobile apps across AI, SaaS, and Fintech domains. I specialize in React, Next.js, Node.js, Python, React Native, and Flutter, delivering high‑performance solutions from concept to deployment. My projects include AI chat systems, onboarding assistants, content automation tools, and financial tracking platforms, each focused on efficiency, automation, and user impact. I combine clean architecture, secure APIs, and excellent UI/UX to ship products clients love. If you need a developer who can handle full‑stack AI…
Staderlabs staking platform
337
Staderlabs staking platform
Cryptocurrency & Blockchain
Stader Labs is a liquid staking platform designed to provide users with the ability to stake their cryptocurrency assets while maintaining liquidity. This innovative approach allows users to earn staking rewards without locking up their tokens for a…
Magic Eden NFT marketplace
355
Magic Eden NFT marketplace
Cryptocurrency & Blockchain
Magic Eden is a prominent NFT marketplace that facilitates the buying, selling, and collecting of non-fungible tokens (NFTs) across multiple blockchain networks.
Alina Savchenko

Alina Savchenko

Ukraine

Social Media Marketing (SMM) · Cryptocurrency & Blockchain

5 0
5.0
321
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Marketing Manager at Mole Game
1117 USD
286
Marketing Manager at Mole Game
Cryptocurrency & Blockchain
- Influencer marketing - Development of marketing strategies - Competitor research - Participation in the creation of product and marketing concepts - Development of content plans for social media - Collaboration with designers to create…
Influence manager at BLUM
2500 USD
272
Influence manager at BLUM
Cryptocurrency & Blockchain
- Search for Ambassadors for the project under a referral program - Involvement of ambassadors in the project and monitoring their work
Marketing advisor at Wormfare
804 USD
288
Marketing advisor at Wormfare
Cryptocurrency & Blockchain
Managing a crypto project from scratch in English. - Full management of social media: Twitter, Telegram, Discord, Instagram - Creating and managing a profile on the Zealy platform, conducting contests, checking tasks, distributing the prize fund -…
Marketing manager at RetroBridge
893 USD
213
Marketing manager at RetroBridge
Cryptocurrency & Blockchain
Content plan development Working with the designer, setting tasks and ideas for visuals Basic strategy for the ambassador program Managing partnerships Filling some sections of the website Managing quest platforms Community management Managing…
Marketing manager at TRUST
670 USD
200
Marketing manager at TRUST
Cryptocurrency & Blockchain
Influencer marketing Development of marketing strategy Competitor research Participation in the creation of product concept and project marketing #SMMPromotioninSocialNetworks #twitter #marketingresearch #socialmarketing
Pavlo

Pavlo

Ukraine

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…
DEX development, CEX development
116
DEX development, CEX development
Cryptocurrency & Blockchain
We can build exchange solutions, design brand new features, use latest technology.
Nikita Loza

Nikita Loza

Ukraine

Cryptocurrency & Blockchain · Web Programming

7 0
861
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The Hulk Finance
667
The Hulk Finance
Cryptocurrency & Blockchain
The full-stack web3 application. The main technologies used: React.js, Web3.js and Solidity
TheDefenders
658
TheDefenders
Cryptocurrency & Blockchain
The full-stack web3 application. NFT and MNT. The main technologies used: React.js, Web3.js and Solidity
NiceToken
736
NiceToken
Cryptocurrency & Blockchain
The full-stack web3 application. Mint token, NFT, as well as NFT marketplace. The main technologies used: React.js, Web3.js and Solidity
by Bridgevpn
531
by Bridgevpn
Cryptocurrency & Blockchain
Development of web3 applications. The main technologies used: React.js and web3.js
Maks Goncharenko

Maks Goncharenko

Ukraine

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

Nikolay Semenyuta

Ukraine

Cryptocurrency & Blockchain · Javascript and Typescript

6 0
842
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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…
Metadata for 3D NFT Collection
100 USD
592
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…
Remint Solana NFT App
1000 USD
584
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…
NFT collection on Ethereum
300 USD
594
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
346
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…
ERC1155 Certificate for 01k Academy
300 USD
383
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…
Illia Dunaiev

Illia Dunaiev

Ukraine

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…
Lotos
2000 USD
45
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
56
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…