Faizan Dhumadia

As a Full Stack & Blockchain Developer, I am driven by a deep ambition to master complex systems and deliver robust solutions. My approach is characterized by intense concentration and logical problem-solving, ensuring determined progress towards pragmatic and high-quality outcomes.

Experience

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Full Stack & Blockchain Developer

Yudiz Solutions Ltd. · Mar 2023 – Jun 2026

Not yet confirmed

• Built a multi-vendor Rewards & Loyalty SaaS platform on the MERN stack.
• React.js front end, Node.js/Express.js backend, MongoDB, split across microservices talking over gRPC.
• Designed a 15-level MLM cashback engine using BFS traversal and recursive propagation, wrapped in atomic MongoDB transactions so a crash mid-payout can't double-pay or skip someone.
• Built the API Gateway everything sits behind: SHA-256 key validation, JWT verification, rate limiting, request proxying, before anything reaches business logic.
• Integrated CashFree's Payment Gateway, Payouts, and KYC APIs, with AES-encrypted bank data at rest and RBAC controlling who can see what.
• On the blockchain side, built a gold tokenization platform where 1 token equals 1 gram of physical gold.
• ERC-20 contracts, Gnosis Safe multi-sig on mint/burn, Chainlink Oracle for price feeds.
• Implemented vesting schedules, staking, and a proxy upgradability pattern on Polygon, so contract logic can be patched without a full redeploy that wipes state.
• Integrated Chainlink VRF into a Play-to-Earn lottery dApp for provably fair randomness, with on-chain prize distribution and a claim system that blocks double-claiming.
• Connected smart contracts to React.js frontends using Web3.js and Ethers.js, across MetaMask and Phantom, spanning EVM and Solana, including a Solana NFT marketplace with Metaplex-standard support.
• Also integrated AWS S3, Firebase FCM, MSG91, and Sentry across the platform, and worked in an Agile/Scrum setup end to end, API design through deployment.

Blockchain Developer

Yudiz Solutions · Mar 2023 – Jun 2026

Not yet confirmed