Hire the Best web3.js Freelancers
in India

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Sunny K.

Jawalamukhi, India

$16/hr
4.9
209 jobs

๐Ÿ‘‘๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐‚๐จ๐ง๐ฌ๐ฎ๐ฅ๐ญ๐š๐ง๐ญโ‚ฟโƒจ ๐Ÿฅ‡10+ years of ๐‘บ๐‘ถ๐‘ณ๐‘ฐ๐‘ซ experience ๐Ÿ•’ 24*7 โœจ With over 10+ years of high-demand experience in ๐—ฏ๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜, I specialize in delivering robust ๐—ณ๐—ฟ๐—ผ๐—ป๐˜-๐—ฒ๐—ป๐—ฑ and ๐—ฏ๐—ฎ๐—ฐ๐—ธ-๐—ฒ๐—ป๐—ฑ solutions for ๐—ฏ๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป-๐—ฝ๐—ผ๐˜„๐—ฒ๐—ฟ๐—ฒ๐—ฑ ๐—ฎ๐—ฝ๐—ฝ๐—น๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€. My expertise covers comprehensive smart contract development, including ๐—ฆ๐—ผ๐—น๐—ถ๐—ฑ๐—ถ๐˜๐˜† and ๐—ฅ๐˜‚๐˜€๐˜ for platforms like ๐—˜๐˜๐—ต๐—ฒ๐—ฟ๐—ฒ๐˜‚๐—บ and ๐—ฆ๐—ผ๐—น๐—ฎ๐—ป๐—ฎ. I excel in architecting, implementing, and auditing ๐—ฑ๐—ฒ๐—ฐ๐—ฒ๐—ป๐˜๐—ฟ๐—ฎ๐—น๐—ถ๐˜‡๐—ฒ๐—ฑ solutions tailored for industries like ๐—™๐—ถ๐—ป๐˜๐—ฒ๐—ฐ๐—ต, where ๐˜๐—ผ๐—ธ๐—ฒ๐—ป๐—ถ๐˜‡๐—ฎ๐˜๐—ถ๐—ผ๐—ป, ๐˜€๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜†, ๐—ฎ๐—ป๐—ฑ ๐˜€๐—ฐ๐—ฎ๐—น๐—ฎ๐—ฏ๐—ถ๐—น๐—ถ๐˜๐˜† are essential. By leveraging blockchainโ€™s power, I create innovative applications that support ๐—ฑ๐—ฒ๐—ฐ๐—ฒ๐—ป๐˜๐—ฟ๐—ฎ๐—น๐—ถ๐˜‡๐—ฒ๐—ฑ ๐—ณ๐—ถ๐—ป๐—ฎ๐—ป๐—ฐ๐—ฒ (๐——๐—ฒ๐—™๐—ถ), ๐—ป๐—ผ๐—ป-๐—ณ๐˜‚๐—ป๐—ด๐—ถ๐—ฏ๐—น๐—ฒ ๐˜๐—ผ๐—ธ๐—ฒ๐—ป๐˜€ (๐—ก๐—™๐—ง๐˜€), ๐’๐ฆ๐š๐ซ๐ญ ๐‚๐จ๐ง๐ญ๐ซ๐š๐œ๐ญ ๐€๐ฎ๐๐ข๐ญ๐จ๐ซ and ๐—ฎ๐—ฑ๐˜ƒ๐—ฎ๐—ป๐—ฐ๐—ฒ๐—ฑ ๐˜€๐—บ๐—ฎ๐—ฟ๐˜ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ฎ๐—ฐ๐˜ functionality, ensuring secure and efficient solutions. My approach includes precise requirement ๐—ฎ๐—ป๐—ฎ๐—น๐˜†๐˜€๐—ถ๐˜€, ๐˜€๐˜๐—ฟ๐—ฎ๐˜๐—ฒ๐—ด๐—ถ๐—ฐ ๐—ฝ๐—น๐—ฎ๐—ป๐—ป๐—ถ๐—ป๐—ด, ๐—ฒ๐—ณ๐—ณ๐—ถ๐—ฐ๐—ถ๐—ฒ๐—ป๐˜ ๐—ฐ๐—ผ๐—ฑ๐—ถ๐—ป๐—ด, ๐˜๐—ต๐—ผ๐—ฟ๐—ผ๐˜‚๐—ด๐—ต ๐—ฑ๐—ฒ๐—ฏ๐˜‚๐—ด๐—ด๐—ถ๐—ป๐—ด, ๐—ฎ๐—ป๐—ฑ ๐˜€๐—ฒ๐—ฎ๐—บ๐—น๐—ฒ๐˜€๐˜€ ๐—ฑ๐—ฒ๐—ฝ๐—น๐—ผ๐˜†๐—บ๐—ฒ๐—ป๐˜. With minimal supervision, I ensure each stage aligns with project goals, producing solutions that are both innovative and reliable. ๐—ง๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐—ถ๐—ฒ๐˜€ : - ============================================================================= ๐Ÿ”ฅ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป: ๐—•๐—ถ๐˜-๐—ฐ๐—ผ๐—ถ๐—ป, ๐—˜๐˜๐—ต๐—ฒ๐—ฟ๐—ฒ๐˜‚๐—บ, ๐—ฆ๐—ผ๐—น๐—ฎ๐—ป๐—ฎ ,๐—˜๐—ข๐—ฆ, ๐—›๐˜†๐—ฝ๐—ฒ๐—ฟ๐—น๐—ฒ๐—ฑ๐—ด๐—ฒ๐—ฟ, ๐—ฆ๐˜‚๐—ฏ๐˜€๐˜๐—ฟ๐—ฎ๐˜๐—ฒ, ๐—ก๐—™๐—ง, ๐—ฆ๐—ผ๐—น๐—ถ๐—ฑ๐—ถ๐˜๐˜†: ๐—ฒ๐—ฟ๐—ฐ๐Ÿฎ๐Ÿฌ/๐——๐—ฒ๐—™๐—ถ, ๐—ฒ๐—ฟ๐—ฐ๐Ÿณ๐Ÿฎ๐Ÿญ/๐—ก๐—™๐—ง. ๐Ÿ”ฅ๐—™๐—ฟ๐—ผ๐—ป๐˜-๐—ฒ๐—ป๐—ฑ: ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜.๐—ท๐˜€, ๐—ก๐—ฒ๐˜…๐˜, ๐—๐—ฎ๐˜ƒ๐—ฎ๐—ฆ๐—ฐ๐—ฟ๐—ถ๐—ฝ๐˜ (๐—˜๐—ฆ๐Ÿฒ), ๐—ง๐˜†๐—ฝ๐—ฒ๐—ฆ๐—ฐ๐—ฟ๐—ถ๐—ฝ๐˜, ๐—”๐—ป๐—ด๐˜‚๐—น๐—ฎ๐—ฟ, ๐—ฉ๐˜‚๐—ฒ.๐—ท๐˜€ ๐Ÿ”ฅ๐—•๐—ฎ๐—ฐ๐—ธ-๐—ฒ๐—ป๐—ฑ: ๐—ก๐—ผ๐—ฑ๐—ฒ.๐—ท๐˜€, ๐—ฃ๐—›๐—ฃ ๐—Ÿ๐—ฎ๐—ฟ๐—ฎ๐˜ƒ๐—ฒ๐—น, ๐—™๐—ถ๐—ฟ๐—ฒ๐—ฏ๐—ฎ๐˜€๐—ฒ. ๐Ÿ”ฅ๐——๐—•: ๐— ๐˜†๐—ฆ๐—ค๐—Ÿ, ๐— ๐—ผ๐—ป๐—ด๐—ผ ๐——๐—• ๐—ฃ๐˜‚๐—ฏ๐—น๐—ถ๐—ฐ ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—ฃ๐—น๐—ฎ๐˜๐—ณ๐—ผ๐—ฟ๐—บ๐˜€: - ============================================================================= โœ” ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ถ๐—ป๐—ด ๐˜€๐—บ๐—ฎ๐—ฟ๐˜ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ฎ๐—ฐ๐˜๐˜€ ๐˜‚๐˜€๐—ถ๐—ป๐—ด ๐—ฎ ๐—ฆ๐—ผ๐—น๐—ถ๐—ฑ๐—ถ๐˜๐˜† ๐—ฝ๐—ฟ๐—ผ๐—ด๐—ฟ๐—ฎ๐—บ๐—บ๐—ถ๐—ป๐—ด ๐—น๐—ฎ๐—ป๐—ด๐˜‚๐—ฎ๐—ด๐—ฒ. โœ” ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ถ๐—ป๐—ด ๐—ฅ๐—ฃ๐—– ๐˜‚๐˜€๐—ถ๐—ป๐—ด ๐—ฐ๐—น๐—ถ๐—ฒ๐—ป๐˜ ๐—น๐—ถ๐—ฏ๐—ฟ๐—ฎ๐—ฟ๐—ถ๐—ฒ๐˜€ ๐˜€๐˜‚๐—ฐ๐—ต ๐—ฎ๐˜€ ๐—ช๐—ฒ๐—ฏ๐Ÿฏ โœ” ๐—ฆ๐˜๐—ฎ๐˜๐—ถ๐—ฐ ๐—ฎ๐—ป๐—ฎ๐—น๐˜†๐˜€๐—ถ๐˜€ ๐—ผ๐—ณ ๐˜€๐—บ๐—ฎ๐—ฟ๐˜ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ฎ๐—ฐ๐˜๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ด๐—ฎ๐˜€ ๐—ฐ๐—ผ๐—ป๐˜€๐˜‚๐—บ๐—ฝ๐˜๐—ถ๐—ผ๐—ป ๐—ฎ๐—ป๐—ฑ ๐—ผ๐—ฝ๐˜๐—ถ๐—บ๐—ถ๐˜‡๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐˜‚๐˜€๐—ถ๐—ป๐—ด ๐—ฅ๐—ฒ๐—บ๐—ถ๐˜… ๐—œ๐——๐—˜. โœ” ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐—ป๐—ด ๐˜€๐—บ๐—ฎ๐—ฟ๐˜ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ฎ๐—ฐ๐˜๐˜€ ๐˜‚๐˜€๐—ถ๐—ป๐—ด ๐—น๐—ถ๐—ฏ๐—ฟ๐—ฎ๐—ฟ๐—ถ๐—ฒ๐˜€ ๐—น๐—ถ๐—ธ๐—ฒ ๐—ข๐—ฝ๐—ฒ๐—ป๐—ญ๐—ฒ๐—ฝ๐—ฝ๐—ฒ๐—น๐—ถ๐—ป. โœ” ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ถ๐—ป๐—ด ๐—˜๐˜๐—ต๐—ฒ๐—ฟ๐—ฒ๐˜‚๐—บ ๐—ฑ๐—ฎ๐—ฝ๐—ฝ๐˜€ ๐˜‚๐˜€๐—ถ๐—ป๐—ด ๐˜๐—ต๐—ฒ ๐—ง๐—ฟ๐˜‚๐—ณ๐—ณ๐—น๐—ฒ ๐—ณ๐—ฟ๐—ฎ๐—บ๐—ฒ๐˜„๐—ผ๐—ฟ๐—ธ. โœ” ๐—œ๐—ป๐˜๐—ฒ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐˜„๐—ถ๐˜๐—ต ๐—ฐ๐—ฟ๐˜†๐—ฝ๐˜๐—ผ ๐˜„๐—ฎ๐—น๐—น๐—ฒ๐˜๐˜€ ๐˜€๐˜‚๐—ฐ๐—ต ๐—ฎ๐˜€ ๐— ๐—ฒ๐˜๐—ฎ๐—บ๐—ฎ๐˜€๐—ธ. โœ” ๐—ฆ๐—ธ๐—ถ๐—น๐—น๐—ฒ๐—ฑ ๐—ถ๐—ป ๐—น๐—ฒ๐˜ƒ๐—ฒ๐—ฟ๐—ฎ๐—ด๐—ถ๐—ป๐—ด ๐—ฆ๐—ฃ๐—Ÿ ๐—น๐—ถ๐—ฏ๐—ฟ๐—ฎ๐—ฟ๐—ถ๐—ฒ๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—ฟ๐—ฎ๐—ฝ๐—ถ๐—ฑ ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜ โœ” ๐——๐—ฒ๐—ฝ๐—น๐—ผ๐˜†๐—ถ๐—ป๐—ด ๐˜€๐—บ๐—ฎ๐—ฟ๐˜ ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ฎ๐—ฐ๐˜๐˜€ ๐—ผ๐—ป ๐˜๐—ฒ๐˜€๐˜ ๐—ป๐—ฒ๐˜๐˜„๐—ผ๐—ฟ๐—ธ๐˜€ ๐˜€๐˜‚๐—ฐ๐—ต ๐—ฎ๐˜€ ๐—ฟ๐—ผ๐—ฝ๐˜€๐˜๐—ฒ๐—ป/๐—ฟ๐—ถ๐—ป๐—ธ๐—ฒ๐—ฏ๐˜† ๐—ฎ๐˜€ ๐˜„๐—ฒ๐—น๐—น ๐—ฎ๐˜€ ๐—˜๐˜๐—ต๐—ฒ๐—ฟ๐—ฒ๐˜‚๐—บ ๐—บ๐—ฎ๐—ถ๐—ป๐—ป๐—ฒ๐˜. I'm always ready to provide efficient, impactful assistance and to take on new challenges swiftly. If you need any of the services mentioned, feel free to reach outโ€”I'm prepared to dive in and deliver exceptional results! I pride myself on identifying the most cost-effective, high-quality solutions for every opportunity I encounter. Thank you for considering my profile! #BlockchainConsultant #SmartContracts #DecentralizedApps #Solana #Ethereum #Bitcoin #DeFi #NFT #Web3 #CryptoDevelopment #BlockchainExpert #FullStackBlockchain #SolidityDev #FintechSolutions #Tokenization #SmartContractAuditing #FrontEndBlockchain #BackendArchitecture #ReactJS #NodeJS #Laravel #MongoDB #MySQL #MetamaskIntegration #OpenZeppelin #TruffleFramework #CryptoWalletIntegration #BlockchainInnovation #TechnologyConsultant #TechLeadership #CostEffectiveSolutions #ReadyToCode

  • web3.js
  • DApp Development
  • Smart Contract
  • Blockchain Development
  • Solidity
  • Hyperledger Fabric
  • Crypto Exchange Platform
  • Cryptocurrency
  • Crypto Wallet Development
  • Software Development
  • Smart Contract Development
  • AI Development
  • Machine Learning
  • Blockchain, NFT & Cryptocurrency
  • Layer 2 Blockchain
Shubham S.

Baramati, India

$10/hr
5.0
4 jobs

Smart Contract Engineer specializing in Solidity and DeFi systems on Ethereum and EVM chains. I build secure smart contracts, staking systems, token ecosystems, and Web3 applications with a focus on security, gas optimization, and production-ready architecture. I design and implement production-grade smart contracts for lending, staking, vesting, and token ecosystems โ€” with a strong focus on collateralization logic, liquidation safety, gas efficiency, and protocol-level security. I donโ€™t build demos. I build systems where real value is at risk, and correctness, safety, and clarity matter. ๐Ÿ”น What I build DeFi lending protocols (collateral, LTV enforcement, health factor, liquidation, interest accrual) Staking & reward systems (finite reward pools, safe accounting, no infinite minting) Vesting contracts (cliff + linear vesting, founder & investor-safe designs) ERC20 token contracts (custom logic, controlled mint/burn, secure allowance handling) Security-focused smart contract architecture (reentrancy protection, access control, CEI pattern, protocol invariants) Smart contract integration (ethers.js, wallet interactions, transaction flows) ๐Ÿ”น How I work I think in protocol flows and invariants, not just individual functions I identify edge cases and security risks early I explain technical trade-offs clearly to non-technical stakeholders I write code that is testable, auditable, and maintainable Iโ€™m comfortable working independently or with distributed teams ๐Ÿ”น What you can expect Clean, well-documented Solidity code Security-first design decisions Clear communication and realistic timelines Honest feedback on risks and limitations Long-term maintainability over shortcuts ๐Ÿ”น Letโ€™s work together If youโ€™re building a Web3 product that involves real asset flow, DeFi logic, or security-critical smart contracts, I can help you design and implement it correctly from day one. Iโ€™m happy to review your idea, point out potential risks, and suggest a solid technical approach before any code is written.

  • web3.js
  • JavaScript
  • NFT
  • Blockchain Architecture
  • Web Application
  • Node.js
  • React
  • Solidify
  • Smart Contract
  • Hardhat
  • TypeScript
  • Ethereum
  • Next.js
  • HTML
  • CSS
Kaushik R.

Dhari, India

$20/hr
5.0
13 jobs

Agentic AI developer and full-stack engineer specializing in Claude Code, MCP, React, Next.js, Node.js, and Web3. Top Rated Plus. 100% Job Success. Let's build your MVP in 7 days. I build full-stack web and mobile applications, agentic AI systems, and Web3 platforms that are production-ready from day one. If your codebase is a mess โ€” AI-generated or otherwise โ€” I'll fix it fast and build it right. If you need AI integrated into your product, custom Claude agents, or MCP servers connecting your systems, that's exactly what I do. If you need a DeFi platform, NFT marketplace, or smart contract shipped, I've done it across Ethereum, Polygon, and BSC. What I build: Agentic AI Systems โ€” Claude Code, MCP servers, multi-agent workflows, AI integration into existing products and platforms. Full-Stack Web & Mobile โ€” React, Next.js, Node.js, TypeScript, React Native. Clean architecture, real performance, zero shortcuts. Web3 & Blockchain โ€” Smart contracts, DeFi platforms, NFT marketplaces, DEX systems, wallet integrations. Solidity, Ethers.js, Wagmi, OpenZeppelin. Stack: Claude Code ยท Anthropic API ยท MCP ยท React ยท Next.js ยท Node.js ยท TypeScript ยท React Native ยท Solidity ยท Ethers.js ยท Wagmi ยท PostgreSQL ยท MongoDB ยท AWS ยท Supabase

  • web3.js
  • Solidity
  • Smart Contract Development
  • Ethers.js
  • React
  • React Native
  • Node.js
  • TypeScript
  • Redux
  • Next.js
  • Blockchain Development
  • NFT
  • DeFi
  • Ethereum
  • Full-Stack Development
  • Claude
  • OpenAI Codex
Nawaz K.

Noida, India

$6/hr
5.0
5 jobs

Hi! Iโ€™m Nawaz, a results-driven ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป & ๐—ช๐—ฒ๐—ฏ๐Ÿฏ ๐—™๐˜‚๐—น๐—น-๐—ฆ๐˜๐—ฎ๐—ฐ๐—ธ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ with 6+ years of experience building secure, scalable, and future-ready decentralized solutions. I help startups, enterprises, and innovators transform blockchain ideas into production-grade platforms, covering everything from architecture and tokenomics to smart contracts, DApps, security, and deployment. My expertise spans DeFi, NFTs, token launches, enterprise blockchain, trading automation, on-chain data systems, and high-performance Web3 applications. ๐Ÿ”นWhat I Bring to the Table: โœ“ End-to-End Blockchain Development โ€” Architecture, smart contracts, backend, frontend, deployment & audits โœ“ Smart Contracts (ERC-20, ERC-721, ERC-1155, SPL, BEP, TRC) โ€” Secure, gas-optimized, audit-ready โœ“ NFT Platforms & Marketplaces โ€” Minting, metadata, IPFS, royalties, fractionalization โœ“ DeFi Protocols โ€” Lending/borrowing, staking, farming, liquidity pools, automated market making โœ“ Crypto Wallet & Exchange Integrations โ€” MetaMask, WalletConnect, Binance, Coinbase, custom wallets โœ“ Web3 Integrations โ€” Ethers.js, Web3.js, Moralis, The Graph, Chainlink, oracle feeds โœ“ Token Launches (ICO, IDO, IEO, INO, STO) โ€” Tokenomics, vesting, launchpad setup โœ“ Trading & Arbitrage Bots โ€” On-chain data reading, liquidity scanning, MEV-safe execution โœ“ Performance Optimization โ€” Gas optimization, caching, off-chain computation โœ“ Security & Audit Readiness โ€” Reentrancy protection, access control, fail-safes, unit testing ๐Ÿ”นTech Stack Expertise: - Languages: Solidity, Rust, JavaScript, TypeScript, Python, Go - Smart Contract Tools: Hardhat, Truffle, OpenZeppelin, Remix - Web3 Tools: Ethers.js, Web3.js, Moralis, IPFS, The Graph, Chainlink - Frontend: React, Vue.js, Angular - Backend: Node.js, Express.js, Django - Blockchains: Ethereum, Polygon, BSC, Solana, Tron, Stellar, Algorand, Hyperledger - DevOps / Infra: Docker, GitHub Actions, AWS, Railway, Vercel, CI/CD pipelines - Databases: MongoDB, PostgreSQL, Redis ๐Ÿ”นWhy Clients Hire Me โœ“ 6+ Years of Real-World Blockchain Experience with proven product launches โœ“ Multi-Chain Expertise to choose the best protocol for performance & cost โœ“ Full-Stack Web3 Development โ€” I build entire ecosystems, not just contracts โœ“ Security-Driven Development with industry-grade audit standards โœ“ Business & Technical Understanding โ€” I translate ideas into viable products โœ“ High Reliability โ€” On-time delivery with clear, documented processes If youโ€™re looking to build or scale your blockchain product, letโ€™s connect and turn your vision into a powerful decentralized solution. Iโ€™d be happy to discuss your requirements and help you build something extraordinary.

  • Web3
  • JavaScript
  • Crypto Wallet
  • Node.js
  • React
  • DApps
  • Ethereum
  • Solana
  • Hyperledger Fabric
  • Cardano
  • MetaMask
  • NFT Marketplace
  • Solidity
  • Rust
  • Smart Contract Development
Akshay B.

Indore, India

$20/hr
5.0
13 jobs

Top Rated | 25+ Clients Served | 12 Years Experience "Chatwoot Open Source Contributor" Youโ€™ve got a product to build but no time to babysit a developer. You need someone who takes ownership, moves fast, and delivers code that just works. Clients often say I โ€œwork like a tech co-founder,โ€ not just a freelancer. My approach: clean, testable code, rapid iterations, and clear, proactive communication. I help startups and growing companies build fast, secure, and scalable web apps with a product-first mindset. Core Expertise: โœ”๏ธ Ruby on Rails โœ”๏ธ React / Next.js frontends โœ”๏ธ Scalable SaaS architectures (incl. AWS) โœ”๏ธ API development & integrations โœ”๏ธ AI / OpenAI-powered features โœ”๏ธ Agile workflows (Jira, Git, Trello) I can help you with: - Building an MVP - Migrating legacy systems - Scaling infrastructure for growth Why startups love working with me: - I work like a partner, not just a dev - I move fast without breaking things - I communicate proactively I deliver clean, maintainable code that lasts Letโ€™s turn your idea into a working product and build something that lasts.

  • web3.js
  • JavaScript
  • React
  • MySQL
  • CSS
  • Git
  • HTML5
  • PostgreSQL
  • jQuery
  • Ruby
  • Ruby on Rails
  • MongoDB
  • Node.js
  • RESTful API
  • Database Design
Vikas K.

Jawala Mukhi, India

$15/hr
4.7
19 jobs

I am a ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค & ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง Developer with over 7+ years of experience, focused on building scalable ๐–๐ž๐›๐Ÿ‘, ๐ƒ๐ž๐…๐ข ๐š๐ง๐ ๐๐…๐“-based applications and high-performance web platforms using Next.js, React.js, and Node.js. I specialize in end-to-end decentralized application development and have a strong ability to convert ideas into fully production-ready blockchain systems. ๐Ÿ”— ๐—•๐—น๐—ผ๐—ฐ๐—ธ๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป ๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ Smart contract development using Solidity & Rust Ethereum, Solana, Bitcoin, Hyperledger, Substrate ERC20, ERC721, ERC1155 token standards DeFi systems, staking, tokenomics, liquidity logic NFT minting platforms and marketplaces Secure contract design using OpenZeppelin standards ๐ŸŒ ๐…๐ฎ๐ฅ๐ฅ ๐’๐ญ๐š๐œ๐ค ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ Frontend: React.js, Next.js, Angular, Vue.js Backend: Node.js, Express.js, Laravel, Firebase APIs: RESTful APIs, Web3 integrations Databases: MongoDB, MySQL Wallet integrations: MetaMask, WalletConnect Deployment: Vercel, AWS, Docker โš™๏ธ ๐–๐ž๐›๐Ÿ‘ ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ ๐’๐ค๐ข๐ฅ๐ฅ๐ฌ DApp architecture design and implementation Smart contract deployment on testnet & mainnet Gas optimization and performance tuning Blockchain data integration with frontend systems Web3.js / Ethers.js integration Secure transaction handling and contract interactions ๐Ÿง  ๐ƒ๐ž๐ฏ๐ž๐ฅ๐จ๐ฉ๐ฆ๐ž๐ง๐ญ ๐€๐ฉ๐ฉ๐ซ๐จ๐š๐œ๐ก Requirement analysis before development starts Modular and scalable architecture design Security-first coding practices Clean, maintainable, and well-structured code Continuous testing and debugging Smooth deployment workflow to production environments ๐Ÿ’ก ๐–๐ก๐š๐ญ ๐ˆ ๐ƒ๐ž๐ฅ๐ข๐ฏ๐ž๐ซ Fully functional decentralized applications Secure and optimized smart contracts Seamless Web3 + frontend integration Scalable backend systems built with Node.js and Next.js Production-ready DeFi, NFT, and full-stack web solutions ๐Ÿค ๐–๐จ๐ซ๐ค๐ข๐ง๐  ๐’๐ญ๐ฒ๐ฅ๐ž Independent and fast execution Clear communication throughout the project Focus on quality and long-term scalability Quick adaptation to project requirements Commitment to delivering reliable blockchain solutions Blockchain Developer, Web3 Developer, Smart Contract Developer, Solidity Developer, DApp Developer, DeFi Development, NFT Marketplace, Ethereum Developer, Solana Developer, Full Stack Developer, React.js, Node.js, Crypto Development, Tokenization, Decentralized Applications, Web3 Integration, Blockchain Architecture, Smart Contract Auditing, OpenZeppelin, Ethers.js, Web3.js, Next.js Developer, Next.js Full Stack, React.js Developer, Node.js Developer, Node.js Backend, Next.js Web App, React Frontend Developer, Full Stack Next.js, Server Side Rendering, Next.js API Routes, REST API Node.js #BlockchainDeveloper #Web3 #SmartContracts #Solidity #DApp #DeFi #NFT #Ethereum #Solana #CryptoDevelopment #FullStackDeveloper #NodeJS #ReactJS #Web3Integration #Tokenization #BlockchainTech #DecentralizedApps #Crypto #Fintech #SmartContractAudit #NextJS #NextjsDeveloper #ReactDeveloper #NodeJSDeveloper #FullStackNextJS #ServerSideRendering #ReactJS #BackendDeveloper

  • Blockchain Architecture
  • Blockchain
  • Cryptocurrency
  • Solidity
  • Ethereum
  • Smart Contract
  • Blockchain Development
  • Ethereum Classic
  • Solana
  • Blockchain Development Framework
  • React
  • Node.js
  • Next.js
  • ExpressJS
  • NestJS
  • MySQL
  • MongoDB
  • PostgreSQL
  • Full-Stack Development

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