Saeed Abdollahiyan

Full-Stack & Web3 Developer

Resume Summary

I’m a self-taught software engineer. For over 20 years, I’ve been fascinated by how software works — and occasionally, by its inefficiencies. Every time I used a program and encountered bugs, inefficiencies, or opportunities for improvement, I couldn’t stop thinking about corrective solutions. This relentless curiosity led me to learn programming, explore emerging technologies, and create solutions that are smoother, smarter, and more user-centric. For me, software engineering goes beyond writing code; it’s an art for enhancing user experiences. Dynamic self-taught developer focused on innovative Web3 and cryptocurrency solutions. Leveraging AI tools to optimize development workflows across diverse programming languages. Deep knowledge in blockchain technologies and cryptographic protocols on platforms such as Ethereum, Binance Smart Chain, Solana, Tron, and Bitcoin. Quick learner with high adaptability to emerging technologies. Proven track record in building scalable full-stack applications with React.js, Next.js, Node.js, and NestJS. Committed to delivering efficient solutions and eager for complex development challenges.

Language Proficiency

  • English: Advanced skills in reading and comprehension. Proficiency in professional communication, enhanced by AI-based language tools for optimal verbal interactions.
  • Turkish: Advanced skills in reading and comprehension. Proficiency in professional communication, enhanced by AI-based language tools for optimal verbal interactions.

Technical Skills

Programming Languages: JavaScript (ES6+), TypeScript, Solidity

Frontend: React.js, Next.js, Tailwind CSS, Radix UI, HTML, CSS, Vite

Backend: Node.js, NestJS, Express.js

Blockchain & Web3: Smart Contract Development (Ethereum, BSC, Solana), Cryptocurrency Wallet Integration (WalletConnect, MetaMask), Ethers.js and Web3Modal, DeFi & NFT Protocols

Databases: PostgreSQL (TypeORM), MongoDB

Development Tools: Git, GitHub, Remix, Hardhat, Truffle, Vercel

Other Skills: RESTful API Design & Development, Scalable Application Architecture, AI-Enhanced Development Practices, Advanced Problem Solving, Rapid Technology Adoption

Selected Projects

DayPay – Decentralized Crypto Payment System

A powerful decentralized payment platform that supports secure and frictionless transactions with over 20 top cryptocurrencies. Includes real-time data retrieval from APIs, QR code generation, and WalletConnect integration for a superior user experience.

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Blockchain Snakes and Ladders Game

Innovative on-chain multiplayer game on BNB Testnet, using Solidity smart contracts. Includes dual random dice roll mechanics, antidote features, and an NFT reward ecosystem for engaging gameplay.

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Admin Panel

Comprehensive React-based dashboard for user management, request processing, and system analytics, supported by NestJS API for seamless operations.

Online Service Marketplace

Scalable online marketplace platform with geolocation-based service matching, secure user authentication, and integrated payment processing, optimized for future blockchain upgrades.

DeviceBound Wallet

A device-bound crypto wallet demo using passkeys (WebAuthn) for secure, device-tied sessions and a local-first UX.

View Project →

Web3 Game and Decentralized App Development Services

Elevate your idea to a production-ready Web3 game or decentralized app (DApp). I design secure and scalable on-chain experiences to attract and grow your community.

Building on proficiency in Solidity, React/Next.js, and NestJS, I create gas-optimized smart contracts integrated with intuitive user interfaces. Projects include cryptocurrency wallet connections (MetaMask, WalletConnect), deployment on EVM-compatible chains, and full source code delivery with detailed documentation for transparency and easy maintenance.

Core services include:

  • Audited and gas-optimized smart contracts in Solidity.
  • Visual and responsive frontend with React.js or Next.js.
  • Seamless wallet integration, including MetaMask, WalletConnect, and more.
  • Powerful backend API (Node.js/NestJS) for hybrid on-chain/off-chain functionalities (in professional and ultimate levels).
  • Visual admin dashboard for monitoring and control.
  • Comprehensive deployment on Testnet with Mainnet readiness.
  • Full source code delivery and ongoing support guidance.

Custom Development Packages

Flexible packages designed to match your project's scope.

🟢 Starter (MVP)

(Ideal for validating concepts or deploying lightweight on-chain prototypes.)

    • Custom smart contract for core game logic.
    • Streamlined Web3 frontend (1-3 main pages).
    • Secure wallet connection.
    • Testnet deployment and initial testing.

🟡 Professional (DApp)

(Optimized for building comprehensive, feature-rich applications.)

    • Everything in Starter +
    • Node.js/NestJS backend for hybrid on-chain/off-chain functionalities.
    • Database integration (PostgreSQL or MongoDB).
    • Essential admin dashboard for user and data management.

Specialized Service: Decentralized Payment Gateway

Integrate cryptocurrency payments into your existing website or app with a secure, multi-chain solution.

  • Support for over 20 top cryptocurrencies (BTC, ETH, BNB, SOL, etc.).
  • Real-time price conversion, QR code generation, and WalletConnect compatibility.
  • Fully decentralized execution on the user's device to prioritize privacy and security.

Project Kickoff Requirements

  • Detailed overview of your game concept or key mechanics.
  • Preferred blockchain network (e.g., BSC, Polygon, Arbitrum).
  • Design guidelines or branding assets (optional).

Ready to launch? Let's connect to get acquainted with your vision!