Hire the Best Solidity Freelancers
in India

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Abhijeet Kr P.

Saran, India

$20/hr
5.0
8 jobs

Iโ€™m a Senior Full-Stack Blockchain Developer with 8+ years of experience delivering production-ready Web3 solutions across Layer 1 and Layer 2 networks. I help startups, enterprises, and founders turn complex blockchain ideas into secure, high-performance applications that scale with real users. Iโ€™ve worked extensively across Ethereum and various chains (Ethereum, BNB Chain, Polygon, Avalanche, Tron) as well as Solana, building everything from smart contract systems to complete Web3 platforms. ๐–๐ก๐š๐ญ ๐ˆ ๐๐ฎ๐ข๐ฅ๐: -DeFi platforms (staking, yield farming, liquidity mechanisms) -NFT marketplaces (minting, trading, royalties, gas optimization) -Token launchpads & ICO/IDO platforms -Tokenization systems for digital and real-world assets -DAO & governance frameworks -Multi-chain and Layer 2 integrations ๐๐ฅ๐จ๐œ๐ค๐œ๐ก๐š๐ข๐ง ๐„๐ฑ๐œ๐ž๐ฅ๐ฅ๐ž๐ง๐œ๐ž: - Smart Contract Mastery: Solidity development for ERC-20/721/1155 with comprehensive security auditing and gas optimization. - DeFi Architecture: Yield farming, staking protocols, automated market makers, and liquidity pools with proven TVL growth. - Web3 Integration: React/Next.js frontends with Web3.js/Ethers.js, MetaMask connectivity, and seamless user experiences. - Multi-Chain Deployment: Ethereum, Polygon, Solana, BSC with cross-chain bridges and Layer-2 scaling solutions. Industries I Serve: DeFi (yield optimization), NFT Projects (creator monetization), Gaming (play-to-earn), Enterprise (asset tokenization), Real Estate (fractional ownership) I am a results-driven Blockchain Developer specializing in building secure, scalable, and production-grade Web3 applications that deliver measurable business value. My core expertise spans advanced Solidity smart contract engineering, DeFi protocol design, tokenomics modeling, and full-stack dApp architecture across EVM ecosystems. I actively integrate trending blockchain innovations such as Layer-2 scaling solutions (Polygon, Arbitrum), zk-rollups, account abstraction (ERC-4337), MEV-resistant contract mechanisms, modular blockchain architecture, restaking primitives, and real-world asset (RWA) tokenization. My approach focuses on gas optimization, security hardening, and high-performance contract execution. With hands-on experience in smart contract auditing, on-chain data analytics, DAO governance frameworks, cross-chain interoperability, and omnichain messaging protocols, I architect secure, future-proof Web3 ecosystems that enhance user adoption, strengthen investor trust, and enable sustainable protocol growth.

  • Solidity
  • DApp Development
  • Blockchain Development
  • Ethereum
  • Smart Contract Development
  • DeFi
  • web3.js
  • Blockchain, NFT & Cryptocurrency
  • Information Security Audit
  • Ethers.js
  • Layer 2 Blockchain
  • Tokenomics
  • Solana
  • Hardhat
Anupam B.

Kolkata, India

$10/hr
5.0
20 jobs

Blockchain & AI Agent Developer specializing in Solana, Ethereum, Rust, Solidity, Smart Contracts, Agentic AI, and Web3 Infrastructure. I build blockchain systems and AI agents that work in production not just on testnet. My core focus is the intersection of Web3 and Agentic AI smart contracts, autonomous AI agents, and on-chain payment infrastructure. I've deployed on Ethereum, Polygon, Solana, and XPR Network, and built everything from NFT marketplaces to full Layer-1 blockchain ecosystems. What I build: Agentic AI & x402 Payment Infrastructure โ€” Autonomous AI agents that transact on-chain using the x402 HTTP payment protocol, enabling machine-to-machine micropayments without human intervention. Solana-Like Blockchain Ecosystem โ€” Full Layer-1 chain with consensus mechanism, validator nodes, and staking logic built from scratch. NFT Marketplace โ€” Minting, listing, and trading platform with custom smart contracts across multiple EVM chains. Student Certificate Verification DApp โ€” Decentralized credential system using Ethereum + Hyperledger. WASM Smart Contracts on XPR Network โ€” C++ based contracts deployed on-chain. Technical stack: Solidity, Rust, React.js, Node.js, Web3.js, Python, IPFS, Hyperledger, MongoDB โ€” plus AI/ML frameworks for agent development and automation. I work with founders and dev teams building at the edge of blockchain and AI where autonomous systems need to interact with on-chain infrastructure. If your project involves AI agents, Web3 payments, or smart contract systems, I understand both layers. Let's scope your project.

  • Solidity
  • DApp Development
  • Blockchain
  • Ethereum
  • web3.js
  • MongoDB
  • Python
  • C++
  • Golang
  • Rust
  • Solana
  • Bitcoin
  • Artificial Intelligence
  • AI Agent Development
  • Machine Learning
  • Next.js
  • IPFS
  • Hyperledger Fabric
  • Web3
  • ZK Framework
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.

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

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

Gurgaon, India

$15/hr
5.0
7 jobs

I am a Senior Blockchain and Crypto Developer with 9+ yearsโ€™ experience designing secure token ecosystems, developing smart contracts, and architecting wallet integrations for a wide range of blockchain networks. Core Expertise:- Token Development:- ERC-20, SPL, Jetton, custom token standards, launch and management. Wallet Integration:- MetaMask, WalletConnect, Phantom, hardware wallets, Telegram wallet bots. Smart Contracts: - Solidity, Rust, FunC, Tact; staking, governance, vesting, audits. Blockchain Platforms:- Ethereum, Solana, TON, Polygon (PoS & zkEVM), Hyperledger, Cardano. dApp Architecture:- Full-stack decentralized apps, real-time dashboards, user-friendly UIs. DeFi Solutions:- DEXs, liquidity pools, yield farming, cross-chain protocols. Why Work With Me: โœ” 100% ownership โ€“ From planning to deployment and support. โœ” Robust security, auditing, and compliance for wallet/token logic. โœ” Fast deliveries, clean and maintainable code. โœ” Proactive communication and transparent milestone delivery. Recent Success: โœ” Launched and audited multi-chain tokens and wallet infrastructures. โœ” Developed dApps with custom wallets and production-grade DeFi protocols. โœ” Architected token solutions supporting NFT, staking, referral payments. Letโ€™s build secure, scalable crypto platforms - driving token creation and wallet innovation for your blockchain business.

  • Blockchain
  • Blockchain Development
  • Smart Contract
  • DeFi
  • Blockchain, NFT & Cryptocurrency
  • NFT
  • Blockchain Tokenization
  • Decentralized Exchange
  • DApps
  • Web3
  • Crypto Wallet Development
  • ERC-20
  • ERC-720
  • ERC-721
  • Utility Token
  • Crypto Wallet
  • Cryptocurrency
  • Crypto Exchange Platform
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.

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

How it works

Post a job for free Post a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Solidity Freelancer in India on Upwork?

You can hire a Solidity Freelancer in India on Upwork in four simple steps:

  • Create a job post tailored to your Solidity Freelancer project scope. We'll walk you through the process step by step.
  • Browse top Solidity Freelancer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Solidity Freelancer profiles and interview.
  • Hire the right Solidity Freelancer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Solidity Freelancer?

Rates charged by Solidity Freelancers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Solidity Freelancer in India on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Solidity Freelancers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Solidity Freelancer team you need to succeed.

Can I hire a Solidity Freelancer in India within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Solidity Freelancer proposals within 24 hours of posting a job description.