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Kirill M.

Novi Sad, Serbia

$50/hr
5.0
6 jobs

Most AI apps look great in a demo and fall apart when real users show up. I build the ones that hold up. I've spent 7 years building frontends (React, Next.js, TypeScript, Tailwind, shadcn/ui), 4+ years on production backends (Postgres, Prisma, Supabase), and the last year shipping multi-model LLM features into real products. I also co-founded a product and ran its engineering up to a live product trusted with around $1M of user funds, so I know what real production takes, not just what a demo looks like. These days I use AI tools like Claude Code every day, which is how I ship in weeks what usually takes months without the code turning into a mess. Wherever you're starting from, a rough idea, a stalled prototype, or a working product that's beginning to break, I take it and turn it into something solid you can put in front of real users and grow. I handle the whole thing end to end: the product, the AI inside it, and everything around it that has to work for it to count. Stack: Next.js, React, TypeScript, Tailwind, Node.js, Supabase, Postgres, Claude, OpenAI, Vercel AI SDK, Stripe, Vercel. Send me what you're building and where it's at today, and within a day I'll tell you if I can help and what it'll take.

  • Web Development
  • Product Development
  • JavaScript
  • TypeScript
  • React
  • Vue.js
  • Next.js
  • Tailwind CSS
  • Claude
  • Vertex AI
  • Supabase
  • OpenAI API
  • OpenAI Codex
  • Gemini
  • Node.js
  • Full-Stack Development
  • PostgreSQL
  • MongoDB
Marko J.

Obrenovac, Serbia

$50/hr
5.0
7 jobs

I am an experienced blockchain developer with a strong background in developing decentralized applications(dApp) and smart contracts on various blockchain platforms such as EVM(Ethereum, Arbitrum, Binance, Base, Polygon etc), Solana and others. I am proficient in Solidity and Rust, the programming language for Ethereum and Solana smart contracts, and have a deep understanding of blockchain technology and its applications. Skills: - Proficient in smart contract development using Solidity and Rust - Experience with EVM(Ethereum, Arbitrum, Binance, Base, Polygon etc), Solana and other blockchain platforms - Knowledge of blockchain consensus algorithms and protocols - Understanding of Decentralized Finance(DeFi), Crypto Lending/Borrowing, LSD Finance and non-fungible tokens (NFTs) - Familiarity with blockchain development tools and frameworks - Strong understanding of cryptography and security principles in blockchain development Work Experience: - Developed and deployed smart contracts for various decentralized applications on the Ethereum and Solanan blockchain - Conducted code reviews and performed security audits to ensure the reliability and security of smart contracts and dApps - Forked famous many dApps ⚡️ Uniswap V2, V3 (uniswap.org) ⚡️ Pancakeswap V2, V3, Stableswap (pancakeswap.finance) ⚡️ Camelot (DEX, DEX Aggregator, Staking, Earning) (camelot.exchange) ⚡️ Lybra (LSDfi, Auto-Bearing-StableCoin, Staking, Vesting) (lybra.finance) ⚡️ 88mph (88mph.app) ⚡️ Olympus DAO (olympusdao.finance) ⚡️ NFT Minting/Staking/Borrowing/Marketplace I am passionate about blockchain technology and its potential to revolutionize various industries. I am committed to delivering high-quality blockchain solutions that meet the unique needs of my clients. Let's discuss how I can help you with your blockchain development needs.

  • Blockchain
  • Blockchain Development
  • Ethereum
  • Smart Contract
  • Rust
  • Blockchain Platform
  • Blockchain, NFT & Cryptocurrency
  • Layer 2 Blockchain
  • Smart Contract Development
  • Solana
  • Solidify
  • DeFi
  • Crypto Exchange Platform
  • Cryptocurrency Forking
  • Crypto Wallet Development
Lazar B.

Novi Sad, Serbia

$25/hr
5.0
1 jobs

👋 Hi, there!, I am Lazar - Your Full Stack | Blockchain Developer! Thank you for stopping by my profile! If you are looking for someone to take your project to the next level, you are in the right place. With over several years of experience and a genuine passion for technology, I am dedicated to delivering innovative solutions tailored just for you 🚀 What I Can Do for You I specialize in creating responsive, dynamic websites and applications using the latest technologies. Whether it's building a sleek front-end with React or Angular or developing a robust back-end with Node.js or PHP, I am always ready. 🛠 My Tech Skills: ✅ Blockchain: Smart Contract/Solidity/Rust, Ether.js, Solana/Web3, CCIP, CCTP, DeFi ✅ Frontend: HTML, Javascript/Typescript, CSS3/TailwindCSS, React/Redux/Saga, Next.js, Angular, TypeScript/Javascript, MUI ✅ Backend: Node.js, Express.js, NextJS, PHP, Python, Laravel, CI, ✅ Database: MongoDB, MySQL, PostgreSQL, Firebase ✅ Mobile Development: React Native, Flutter ✅ Cloud & DevOps: AWS, Digital Ocean, Docker ✅ Version Control: Github/Gitlab 🚀 Why Work With Me? ✅ Problem Solver: I love tackling challenges and finding creative solutions. ✅ Full-Cycle Development: From idea to launch, I handle every step of the process. ✅ Quality Focused: I ensure clean, efficient code and thorough testing for bug-fee results ✅ Timely Delivery: I respect deadlines and keep your project on track. 🤝 Let's collaborate! Whether you need a custom website, a mobile app, or anything in between, I am here to help bring your vision to life. Don't hesitate to reach out, let's create something amazing together!

  • Blockchain
  • Smart Contract
  • Web Development
  • React
  • Node.js
  • MongoDB
  • MERN Stack
  • Laravel
  • PHP
  • Flutter
  • React Native
  • Mobile App Development
  • Solana
  • Web3
  • Solidity
Milan J.

Sabac, Serbia

$49/hr
5.0
3 jobs

With over 8 years of experience, I have an extensive background in blockchain technologies and development, ensuring comprehensive support from tokenomics design to launch and management. 1. Token & Presale & Staking - Developed presale websites and smart contracts. - Created tokens, including Tax tokens, Liquidity Fee tokens, and Real World Asset (RWA) tokens. - Managed token staking, airdrops, and token launchpads. - Successfully listed coins on CoinMarketCap (CMC) and CoinGecko. - Launched tokens on various platforms, such as Uniswap, PancakeSwap, SunSwap, SuiSwap, and DeDust. - Developed real estate tokens. 2. Bots & Token Utilities - Created volume, holder, trending, and trading bots. - Developed token analytics tools. - Facilitated immediate token migration from Pumpfun to Raydium. - Implemented Moonshot to Raydium and first buy at launch features. - Enhanced token trending scores on Dexscreener using various utilities. 3. DApp & DeFi - Developed Web3 games like CoinFlip, Blackjack, Tap to Earn, Hamster Kombat, and P2E games. - Built cross-chain bridges, decentralized exchanges (DEX), Hyperlane Bridge, Layer Zero, and utilized AxelarJS SDK. - Created Bitcoin Ordinal, Fractal DApps, Runes, NFT marketplaces, and IPFS integrations. 4. Web3 Integration - Integrated various wallets like Metamask, Unisat, Xverse, Xumm, Keplr, Hashpack, and Wallet Connect. - Utilized Node.js and Web3 for integration. - Developed both frontend and backend systems. - Integrated crypto payment solutions. 5. Supported Blockchains - Bitcoin (Ordinal) - Ethereum - Solana - Aptos - Ton - Tron - Sui - Cosmos - XRPL - Cardano - Fantom - Polygon - zkSync - Hedera - Injective - Fractal - Pumpfun - Moonshot

  • Blockchain
  • Ethereum
  • Smart Contract
  • Smart Contract Development
  • Web3
  • Full-Stack Development
  • NFT
  • Ecommerce Website
  • Solana
  • DApp Development
  • React
  • Solidify
  • Rust
  • JavaScript
  • TypeScript
Dejan M.

Sabac, Serbia

$40/hr
5.0
2 jobs

I am a highly skilled blockchain developer specializing in decentralized application (dApp) and infrastructure development. With extensive experience working across various blockchain ecosystems, including EVM-compatible chains (Ethereum, Binance Smart Chain, Polygon, etc.), Solana, TRON, Bitcoin ordinals and TON, I bring deep technical expertise and a strong problem-solving mindset to every project. My work includes building smart contracts, optimizing blockchain performance, and creating seamless user experiences in decentralized applications. I am passionate about blockchain's potential to reshape industries and enjoy pushing the boundaries of what is possible with decentralized technologies.

  • Rust
  • Python
  • JavaScript
  • TypeScript
  • Vyper
  • Solidity
  • Truffle
  • MongoDB
  • PostgreSQL
  • Docker
  • Git
  • GitHub
  • GitLab
  • Kubernetes
  • CI/CD
Slobodan V.

Belgrade, Serbia

$45/hr
5.0
12 jobs

Software Engineer with great experience in web & AI mobile app development. -Frontend Skills: TypeScript, React, Next.js, Angular, SCSS, Tailwind CSS, Bootstrap, Material-UI Redux, Redux toolkit, Good understanding of GraphQL -Mobile Skills: Flutter, React Native/Expo, Swift, iOS/Android -Backend Skills: Node.js, Python, Express, Nest.js MySQL, PostgrSQL, MongoDB, TypeORM, ElasticSearch Restful API, gRPC, Protocol Buffer -AI Skills: OpenAI, LLM, Tensorflow, Yollo, RAG, Chatbot -Version Control system: GitHub, GitLab -Google Cloud System: AWS, Azure I am at your disposal.

  • Next.js
  • Flutter
  • TypeScript
  • React Native
  • React
  • Angular
  • Node.js
  • NestJS
  • Python
  • AI Development
  • Mobile App
  • Swift
  • Android
  • iOS
  • JavaScript

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Cost to hire a Blockchain Developer

Cost to hire a Blockchain Developer

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Blockchain Developer job description template

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Blockchain Developer interview questions

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