azizul

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Enterprise Web3 SaaS Architect — 3 Live Production Platforms • $395K+ Development Value • Multi-Tenant B2B Systems.

I eliminate the three forces that kill enterprise Web3 projects: wallet friction that drops 90% of users, gas fees that drain budgets and custody trust gaps that block institutional capital. Every architecture I deliver is live, tested and verifiable – not wireframes or prototypes.

◆ LIVE PRODUCTION PROOF (Click to verify):

🟢RWA Gold Tokenization SaaS → https://rwa-gold-platform-frontend.vercel.app/

🟢Gasless Loyalty Engine (Shopify + ERC-4337) → https://gasless-loyalty-engine-git-main-ahpavel71s-projects.vercel.app/admin/shopify

🟢Hybrid NFT Brand Launchpad (ERC-721A + ERC-1155) → https://hybrid-nft-platform-frontend.vercel.app/

◆ WHAT YOU GET:

✔️ RWA Tokenization Architect — Institutional-grade commodity tokenization with Merkle Proof-of-Reserve, Chainlink oracle integration, 2-of-3 multisig timelock governance and escrow redemption vaults. Architected for cross-border physical gold supply chains and multi-region luxury asset holding groups across Asia and the MENA region.

✔️ Gasless Infrastructure Engineer — Zero-friction Web3 onboarding using Account Abstraction (ERC-4337). Users log in with email, earn on-chain rewards and never see a gas fee. Privy embedded wallets + Pimlico paymaster sponsorship eliminate MetaMask and seed phrases entirely.

✔️ Gas-Optimized NFT Systems Architect — High-throughput batch minting via ERC-721A slashing gas costs by 80%. White-label factory contracts deploy isolated collections per tenant with built-in EIP-2981 royalty enforcement.

◆ ENTERPRISE RESULTS DELIVERED:

✔️ 8 smart contracts deployed and tested for institutional gold tokenization — GoldToken, GoldTokenFactory, AssetRegistry (Soulbound ERC-721), RedemptionVault, PriceOracle (Chainlink XAU/USD), RWAMarketplace, ProofOfReserve, TimelockMultisig.

✔️ 12 smart contracts engineered for gasless loyalty infrastructure — LoyaltyPoints (ERC-20 + ERC-2612 Permit), SoulboundBadge (ERC-5192), RewardsVault, BadgeAccount (ERC-6551 Token-Bound), ERC6551Registry, LoyaltyFactory, SecurityTimelock + V2 upgrade contracts.

✔️ 8 smart contracts built for the NFT launchpad — AIArtNFT (ERC-721A), GameItems (ERC-1155), LazyMintNFT, MerkleWhitelist, NFTCollectionFactory, NFTMarketplace, RevealableNFT, CollectionMetadata.

✔️ Full-stack multi-tenant SaaS delivery — NestJS 10 backends, Prisma ORM, PostgreSQL (Supabase), Pinata IPFS orchestration, Next.js 15/16 frontends with Wagmi v3, Viem v2 and Glassmorphism UI systems.

◆ MY APPROACH:

You get production-tested enterprise architecture — not experimental code.

Every project follows a strict delivery protocol:

1. Smart Contract Security Layer Solidity 0.8.24/0.8.28 with OpenZeppelin v5.x. UUPS upgradeable proxy patterns. Role-based AccessControl. Comprehensive Hardhat test suites. Gas optimization with ERC-721A batch minting and ERC-2612 gasless approvals.

2. Backend API & Data Integrity NestJS 10 microservices with Prisma ORM and PostgreSQL. Real-time blockchain state reads via ethers.js and viem — bypassing database latency entirely (Zero-Bug Protocol). Pinata SDK for secure 2-step IPFS metadata upload.

3. Frontend & User Experience Next.js 15/16 App Router with React 19. Wagmi v3 hooks for wallet interaction. Responsive Glassmorphism UI with Tailwind CSS 4 and Framer Motion. Multi-language i18n (English, Bengali, Arabic) for regional market deployment.

4. Web3 Infrastructure & Account Abstraction Privy Auth for social login embedded wallets. Pimlico ERC-4337 bundler + paymaster for sponsored gasless transactions. Chainlink Data Feeds for oracle-grade pricing. Merkle trees for cryptographic Proof-of-Reserve.

◆ TECHNICAL ECOSYSTEM:

Smart Contracts: Solidity 0.8.24/0.8.28 • Hardhat • OpenZeppelin v5.x • UUPS Proxy • ERC-20 (Permit) • ERC-721A • ERC-1155 • ERC-5192 (Soulbound) • ERC-6551 (Token-Bound Accounts) • EIP-2981 (Royalties)

Account Abstraction: ERC-4337 • Privy Auth • Pimlico Bundler & Paymaster • Permissionless SDK

Oracles & Verification: Chainlink Data Feeds (XAU/USD) • Merkle Proof-of-Reserve • Multisig Timelock

Governance Backend: NestJS 10 • Prisma 5 • PostgreSQL (Supabase) • ethers.js v6 • Pinata SDK • Stripe • Multer • Class-Validator

Frontend: Next.js 15/16 • React 19 • TypeScript 5 • Tailwind CSS 4 • Wagmi v3 • Viem v2 • Framer Motion • Recharts • TanStack React Query • MetaMask SDK

DevOps & Testing: Hardhat Test Suites • Jest • Supertest • TypeChain • Etherscan Verification • Vercel

Deployment Networks: • Ethereum • Polygon • Base • Arbitrum • Sepolia • Amoy (Testnet)

◆ INDUSTRIES I BUILD FOR:

DeFi & Tokenization • RWA (Gold) • E-Commerce & Shopify Web3 • NFT Brand Launchpads • Institutional Commodity Markets •B2B Multi-Tenant SaaS

NEXT STEP:

Book a 15-min Web3 scoping session. We'll map your requirements against my 3 live multi-tenant SaaS architectures for an actionable roadmap. Click "Invite to Job" or message me directly to secure your infrastructure blueprint. Strict 4-hour SLA for all qualified enterprise briefs.

Experience: 2 years

Yearly salary: $60,000

Hourly rate: $40

Nationality: 🇧🇩 Bangladesh

Residency: 🇧🇩 Bangladesh

Experience

Senior Full-Stack Web3 & SaaS Architect

Bitfix

2020 - 2026

Architect and deploy end-to-end multi-tenant B2B Web3 SaaS platforms, delivering over $395K+ in cumulative code and protocol asset valuation. Key Production Milestones Shipped: 1. Institutional RWA Gold Tokenization SaaS: Built an 8-contract EVM suite featuring Chainlink XAU/USD data feeds and cryptographic Merkle Proof-of-Reserve validation mechanisms. 2. Gasless Loyalty Infrastructure: Engineered a 12-contract Account Abstraction (ERC-4337) network integrated with Privy embedded wallets and Pimlico paymaster gas-sponsorship flows. 3. Hybrid NFT Brand Launchpad: Developed high-throughput factory contracts utilizing custom ERC-721A patterns to slash end-user minting gas fees by 80%. Enforce absolute backend and smart contract state integrity using NestJS 10 microservices, Prisma ORM, PostgreSQL (Supabase), and ethers.js/viem direct blockchain data reads.

Skills

erc-1155

erc-20

erc-721

full-stack

nestjs

nextjs

nft

openzeppelin

postgres

solidity

tailwind

typescript

web3

web3js

english

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