Rizwan H.

Blockchain Development Lead

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Lahore, Pakistan

Experience

Jun 2022 - Present
3 years 7 months

Blockchain Development Lead

Labrys

  • Led end-to-end delivery of enterprise blockchain solutions for Fortune 500 clients, from technical scoping and protocol selection to smart contract deployment, with a focus on modular architecture and scalability.
  • Architected multi-chain DApps using microservice-based backends, integrating blockchain nodes, GraphQL APIs (via The Graph), and real-time event listeners for seamless frontend data consumption.
  • Introduced a CI/CD pipeline for smart contracts using Hardhat, GitHub Actions, and automated test suites with Chai/Mocha, significantly reducing deployment bugs and QA cycles.
  • Conducted deep research and POC development on emerging L2 protocols (zkSync, StarkNet, Arbitrum), delivering comparative reports and helping stakeholders make informed adoption decisions.
  • Mentored and managed a team of 6+ blockchain engineers, facilitating code reviews, knowledge-sharing sessions, and career growth while ensuring sprint targets and architecture standards were consistently met.
Apr 2020 - May 2022
2 years 2 months

Senior Blockchain Developer

Blockchain Studioz

  • Spearheaded the development of cross-chain NFT marketplaces with advanced features like lazy minting, royalty management, and IPFS-based metadata storage across Ethereum, BSC, and Polygon networks.
  • Engineered enterprise-grade smart contract systems for token launches (ERC-20, ERC-721, ERC-1155), token vesting, and crowdsale contracts with integrated access control, KYC/AML layers, and gas-efficiency optimization.
  • Led internal audits and security reviews of mission-critical smart contracts, identifying vulnerabilities (reentrancy, overflow, front-running) and implementing best practices aligned with CertiK and Trail of Bits standards.
  • Guided junior developers and conducted technical code reviews, setting up internal development standards and reusable smart contract libraries to accelerate project delivery and maintain code consistency.
  • Collaborated with international clients and project managers to gather blockchain-specific requirements, scope decentralized solutions, and ensure timely delivery of MVPs and production-ready deployments across various L1 and L2 chains.
Feb 2019 - Mar 2020
1 year 2 months

Blockchain Developer

Designli

  • Led the architecture and development of Ethereum-based smart contracts for custom DApps, focusing on gas optimization, upgradeability, and audit-ready code using Solidity and OpenZeppelin libraries.
  • Built full-stack decentralized applications (DApps) integrating Web3.js/Ethers.js with React frontends and Node.js backends, enabling seamless wallet interactions (MetaMask, WalletConnect) and real-time blockchain data sync.
  • Designed and implemented tokenomics models and smart contract flows for DeFi applications, including staking, yield farming, and vesting schedules, ensuring both scalability and security.
  • Collaborated with UI/UX, product, and QA teams in Agile sprints, translating user stories into robust blockchain features, while maintaining clear documentation and versioning using Git and Hardhat.
  • Contributed to multi-chain development initiatives, including deployment and testing on testnets/mainnets like Polygon and BSC, while creating reusable smart contract modules and integration scripts for cross-chain operability.

Summary

Experienced and results-driven Senior Blockchain Developer with 5+ years of expertise in developing and deploying DApps and smart contracts across multiple blockchain platforms including Ethereum, Solana, BSC, and Polygon. Proficient in Solidity, Rust, Web3.js, Ethers.js, and frameworks like Hardhat and Truffle, with a strong focus on security, scalability, and gas optimization. Demonstrated success in building end-to-end blockchain solutions in DeFi, NFT, and Web3 ecosystems, while collaborating with cross-functional teams in agile environments.

Languages

Urdu
Native
English
Advanced

Education

Oct 2016 - Jun 2018

Lahore University of Management Sciences

MS · Computer Science · Pakistan

Oct 2012 - Jun 2016

National University of Computer and Emerging Sciences

BS · Computer Science · Pakistan

Certifications & licenses

Certified Blockchain Developer

Blockchain Council

Certified Solidity Developer

SolidityScan / Blockchain Council

Ethereum Developer Certification

ConsenSys Academy

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