Hi, I’m Zaryab, a Full-Stack Software Engineer who blends AI, Blockchain, and SaaS development to help startups move from idea to launch fast. I work with founders, entrepreneurs, and innovators who have ideas but need a technical expert to turn them into functional, scalable products. Whether it’s an AI-powered SaaS, a Web3 automation system, or a custom MVP, I build solutions that deliver results quickly, cleanly, and with long-term scalability in mind. What I Do • Full-Stack Web Apps: Build the backend and frontend • Blockchain: Build smart contracts, dapps, and layer 1 blockchains • AI & Web3 Automation: Workflow bots, data pipelines, and smart automations. • SaaS & MVP Development: From idea validation to a working product in weeks, not months. Why Clients Work With Me ✔ Fast, reliable delivery: I’ve built MVPs that went live in under 2 weeks. ✔ Clear, transparent communication: Every step is collaborative and documented. ✔ Deep technical understanding: Full-stack, smart contracts, and automation systems. ✔ Up-to-date with modern stacks: Always exploring emerging tech that adds real value. ✔ Business-minded: I care about user experience, scalability, and ROI, not just code. Let’s Build Something That Works Together, we’ll create products that solve real problems, delight users, and achieve measurable results. Let’s discuss your goals and make them happen.

As a Sr. blockchain Engineer with Golang, RUST/Solana & solidity programming skills, I have successfully delivered a wide range of custom cryptocurrency and blockchain development projects using the solidity & Ride language with eye-catching user-friendly UI design and high-end functionalities **Corda Certified Developer** I have successfully developed Smart Contracts, Toekns, Dapps, Defi, DEX ,NFT Marketplace, and Innovative Utilities for Startups and their NFT collections on multiple Blockchains Platform i.e Ethereum, Polygon, Binance, Wave . As a Sr. blockchain developer & solidity programmer, ride developer, I have successfully delivered a wide range of custom cryptocurrency and blockchain development projects using the solidity & Ride language with eye-catching user-friendly UI design and high-end functionalities My Technical Blockchain Development Expertise: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full-stack blockchain developer, I have decent expertise in Blockchain development and smart contract Audit and custom smart contract application development technologies: ✅ Server-Side Languages: PHP, Node JS ✅ Frameworks: Express Js, YII2, Laravel, CakePHP ✅ JavaScript Frameworks: Angular Js, Jquery. ✅ Smart contract language: Solidity, Ride ✅ Data Management: o RDBMS: MySQL 5.X, PostgreSQL, Amazon RDS o NoSQL: MongoDB. o Caching: Memcached, Redis o Searching: Solr, Lucene, Elasticsearch, Amazon CloudSearch ✅ Queue: ActiveMQ, Amazon SQS ✅ Server Technologies: Linux, Ubuntu ✅ Cloud Computing Platforms: Amazon Web Services ✅ Frontend Stack: o Languages: HTML5, CSS3, Sass, JavaScript o UI Frameworks: Bootstrap, jQuery UI o JavaScript Frameworks: React, Backbone.js, Angular 2 ✅ Third-Party APIs Integration: o Payment Gateway: PayPal, Stripe, Authorize.Net, Coinpayments.net o Social: Facebook, Twitter, Google+ o Geolocation: Google Maps, Bing Maps o File Storage: Dropbox, Google Drive Blockchain Development Services We Offer: ⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷⟷ Being a full-stack blockchain developer & solidity programmer and associated with an ISO certified blockchain development company, I develop rapid, error-free website & web applications to achieve an enterprise's functionality implementation and business logic with minimum complexities ✅ Custom Blockchain Development ✅ Smart Contracts Development ✅ dApps Development ✅ Defi ✅Liquidity pool ✅ Crowdsale ✅ EVM Based Blockchain ✅ Hyperledger & Multichain Development ✅ Multichain/Supply Chain Development ✅ Custom Cryptocurrency Development ✅ Crypto App Development ✅ ICO Web Development ✅ POC Development ✅ Custodial and Non-Custodial wallet Integration ✅ Cryptocurrency Wallet and Exchange Applications ✅ Private Blockchain Development ✅ Blockchain Consulting ✅ Blockchain Testing ✅ Ongoing Blockchain Development Support and Maintenance ✅ Full-Stack Blockchain Development ✅ Full Time Dedicated Blockchain Developer ✅ Half Dedicated Blockchain Developer Hourly Basis

👋 Greetings! I’m a seasoned US-based developer specializing in Blockchain, Mobile App Development, and Custom Software Solutions. With years of experience delivering secure, high-performance systems, I help businesses harness modern technologies to achieve meaningful, scalable results. 🔗 Blockchain Expertise – Focused on Security & Infrastructure I bring deep expertise in building secure, enterprise-ready blockchain solutions — including smart contracts, decentralized identity, and on-chain data integrity — with real-world applications across industries like supply chain, healthcare, compliance, and digital identity. ✅ My Blockchain Skillset Includes: • Smart Contract Development (Solidity, Vyper, Rust, Cairo) • Blockchain Architecture Planning & Security Audits • Private & Permissioned Blockchain Systems (Hyperledger, Quorum) • Blockchain-based Access Control and Authentication (DID/VC) • Zero-Knowledge Proof Integration (zk-SNARKs, Circom, Noir) • IPFS / Filecoin for secure, distributed file storage • Chain integration and node maintenance (Ethereum, Polygon, Base, zkSync) 📦 Typical Solutions I Deliver: • Smart Contract Systems with Upgradeability & Role-based Security • Blockchain-based Document Notarization and Audit Trails • Decentralized Identity (DID) and Verifiable Credential Systems • Traceability & Supply Chain Transparency on Blockchain • On-chain Data Integrity with Privacy-Preserving Features ⚙️ Software Development Expertise In addition to blockchain, I offer full-cycle development for web and mobile apps, custom backend systems, and integrations with external APIs and services. 🧰 Web & Mobile Stack: • Frontend: React.js, Vue.js, HTML5, CSS3, Bootstrap • Backend: Node.js, Laravel PHP, Python • Databases: MySQL, MongoDB, Redis • Mobile: Native Android/iOS, Flutter, React Native • APIs: RESTful & GraphQL API Development & Integration • Dev Tools: Git, Docker, TDD (Unit Testing) 🔒 Security-Focused Engineering Security and reliability are core to every solution I build. From smart contract audits to secure API integration and data encryption, my work is designed with long-term maintainability and resilience in mind. If you're building an application that demands robust engineering, secure data practices, and scalable performance, let’s schedule a call and explore how I can help bring your vision to life.

Looking for a developer who can 𝐛𝐮𝐢𝐥𝐝 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬, integrate blockchain, automate workflows, and add AI intelligence? I help startups and businesses build scalable, secure, and automated systems that actually work in production. 𝐅𝐔𝐋𝐋-𝐒𝐓𝐀𝐂𝐊 𝐖𝐄𝐁 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 Frontend: ReactJS, NextJS, Angular, HTML, CSS, Tailwind CSS Backend: NodeJS, Python, ExpressJS, Fastify Databases: MongoDB, PostgreSQL, MySQL APIs: REST, GraphQL, Third-party integrations 𝐁𝐋𝐎𝐂𝐊𝐂𝐇𝐀𝐈𝐍 & 𝐖𝐄𝐁𝟑 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 Ethereum, BSC, Polygon, Avalanche, TRON, Bitcoin Smart Contracts, Token Launches, Cross-Chain Bridges NFT Marketplaces, Minting & Staking DApps DeFi Platforms: Staking, Yield Farming, Lending DEX & CEX Development, ICO/IDO Wallets, Escrow Systems Telegram Crypto Bots & Mini Apps Metaverse Projects 𝐀𝐈 & 𝐀𝐔𝐓𝐎𝐌𝐀𝐓𝐈𝐎𝐍 𝐒𝐘𝐒𝐓𝐄𝐌𝐒 GPT, Claude & Curie integrations AI chatbots & intelligent automation n8n workflows, webhooks & background jobs API automation, data sync & SaaS integrations AI-powered Web3 & SaaS products 𝐓𝐎𝐎𝐋𝐒 & 𝐏𝐋𝐀𝐓𝐅𝐎𝐑𝐌𝐒 OpenZeppelin, Truffle, Ganache, Remix, Brownie Web3.js, Ethers.js, Web3.py MetaMask, WalletConnect Alchemy, Infura n8n, Webhooks, Docker 𝐖𝐇𝐘 𝐂𝐋𝐈𝐄𝐍𝐓𝐒 𝐇𝐈𝐑𝐄 𝐌𝐄 ✅ Full-stack + blockchain + AI + automation in one profile ✅ Clean, secure, production-ready code ✅ Strong problem-solving & system design skills ✅ End-to-end delivery: UI → Backend → Blockchain → AI → Automation ✅ Clear communication & on-time delivery Whether you need a web app, blockchain platform, AI-powered SaaS, or automated workflow using n8n, I can design and build the complete solution. Let’s build something scalable, automated, and future-ready 🚀 Keywords: Full Stack Developer, MERN Stack, MEAN Stack, Angular Developer, React Developer, Next.js Developer, Node.js Developer, API Development, MongoDB, PostgreSQL, AI Integration, AI Chatbot, GPT Integration, AI Automation, Workflow Automation, n8n, Business Process Automation, Webhooks, Background Jobs, SaaS Development

4+ years building production blockchain infrastructure — from perpetual DEX and lending protocols to trading bots and on-chain settlement systems. What I build: • Trading bots & market-making systems (Polymarket, DEX, CEX) • Smart contracts — ERC-20, DeFi protocols, on-chain settlement (Solidity, Move) • Backend systems — matching engines, WebSocket feeds, REST APIs (Go, Python) • Full-stack DeFi — orderbook infrastructure, liquidity tooling, protocol integrations Past work includes building a perpetual DEX and lending protocol at a top-10 blockchain (NEO), delivering 17+ freelance projects across EVM, Solana, and Move-based chains, and developing an AI-powered market-making agent for prediction markets. I write clean, production-grade code with tests and documentation. I communicate clearly, deliver on time, and I'm available 30+ hours/week. Tech stack: Go, Solidity, Python, Rust, Move | PostgreSQL, Redis, WebSockets | EVM, Solana, Aptos/Sui

■ Programming languages: Java SE/EE, Spring (MVC,Boot,IOC), JDBC, SQL, Object-Oriented Programming (OOP), JSP,Node,Soldity,Javascript, Angular,React, ■ Web and Mobile Automation tools: Java, Selenium WebDriver, Spring MVC, Maven, TestNG/JUnit, Firebug, Appium, ADB, UIAutomator; ■ Webservers: Tomcat,GlassFish,Oracle WebServer; ■ Good knowledge of Java programing patterns; ■ Performance/Load tools: Jmeter; ■ Test Environments: Local, Grid, BrowserStack, Sauce Labs, AWS Farm Devices, Docker; ■ Web programming languages/technologies: HTML, Angular ,React, CSS, JavaScript, XPath, XML, JSON; ■ IDE: Eclipse; ■ CI: Jenkins(Pipelines); ■ Control version system: GIT, SVN; ■ API: SOAP, REST; ■ Issue/Story Trackers: Jira, Redmine, Track Studio, HPQC, Rally; ■ OS: Windows XP/7/8.1/10, Linux Cent OS/Ubuntu, Android, IOS, (VMware Workstation); ■ MS Office;

Rust Blockchain Infrastructure & Distributed Systems Engineer | Solana • Move VM • High-Performance Backends I build production-grade Rust backend infrastructure that powers blockchain protocols, RPC services, data pipelines, and distributed systems. My code doesn’t just “work” — it is correct, observable, fault-tolerant, and built to survive real-world load. If you need a Rust engineer who understands systems, protocols, reliability, and scale (not just feature coding), I design infrastructure that future teams can maintain with confidence. What I Do I specialize in blockchain infrastructure and backend engineering: • Distributed systems & high-throughput backends (Rust) • RPC / JSON-RPC / gRPC servers for blockchain nodes & validators • Durable execution engines, intent pipelines & submission systems (Solana) • Move VM runtime & smart contract execution layers • Async message brokers & event pipelines (Kafka, NATS, Redis Streams) • On-chain data ingestion, indexing & wallet analytics pipelines • Observability, structured logging, tracing & fault-tolerance • Performance optimization, memory profiling & horizontal scaling • Internal protocols, serialization & deterministic execution I actively build and maintain open-source Rust projects focused on durable execution, high-performance RPC services, transaction security, and blockchain data pipelines. Engineering Values Most engineers focus on features. I focus on systems that survive real-world load. That means: ✔ Clear boundaries & clean interfaces ✔ Deterministic, predictable behavior ✔ Structured error handling & recovery paths ✔ Observability + metrics + tracing ✔ Performance-aware async design (Tokio/Axum/Tower) ✔ Maintainable code & backwards compatibility My systems are readable, testable, diagnosable, and operable. Typical Projects Clients hire me to: • Build or fix Rust backends for Solana, Move, or multi-chain protocols • Design durable execution platforms and RPC infrastructure • Implement high-throughput data pipelines and indexing services • Add reliability, observability & fault-tolerance to existing systems • Optimize latency, memory usage and throughput • Integrate Kafka/NATS/Redis for blockchain event streaming Good Fit For ✔ Blockchain infrastructure teams, validator operators & DeFi protocols ✔ Companies scaling on-chain data or RPC services ✔ Technical founders who need production-grade Rust systems ✔ Long-term reliability & maintainability, not quick hacks Not a fit for: ✘ Pure frontend or mobile-only work ✘ “Just ship an MVP” projects with no reliability requirements Tech Stack Languages: Rust (primary), TypeScript Rust Ecosystem: tokio, axum, tower, tracing, serde, sqlx, reqwest Blockchain: Solana, Move VM, JSON-RPC, validators & oracles Data & Infra: Postgres, Redis, RocksDB, ClickHouse, Kafka, NATS Tools: Docker, Linux, Nix, CI/CD, AWS, bare metal My Philosophy Production systems must be reliable, understandable, maintainable, observable and upgradeable. I write code that fails loudly and predictably, surfaces metrics, scales horizontally, isolates failures, and treats correctness as a non-negotiable feature.

Senior Full Stack Engineer, Technical Lead, and Web3 developer with 6+ years of experience building high-performance blockchain, AI, and distributed systems from concept to production. I specialize in Web3 product development, smart contract architecture, DeFi infrastructure, NFT marketplaces, token launchpads, crypto wallets, GameFi platforms, Telegram Mini Apps, and on-chain reward ecosystems. My technical stack includes Solidity, EVM-compatible chains, TON, Ethers.js, Web3.js, account abstraction, smart contract integrations, and blockchain-based payment systems. On the backend, I design scalable, event-driven architectures using NestJS, PostgreSQL, Redis, RabbitMQ, Kafka, and WebSockets, supporting real-time applications, high transaction throughput, and millions of user interactions. I focus on building secure, fault-tolerant systems that remain stable under rapid growth and heavy load. My AI background includes machine learning, speech recognition, NLP, intent detection, LLM integrations, workflow automation, and AI-powered applications for enterprise clients in banking, telecommunications, and digital products. Over the past several years, I have led and delivered 20+ products across Web3, AI, FinTech, and consumer applications, including platforms with 1M+ users, multi-million-dollar transaction volumes, NFT ecosystems, token launch platforms, crypto casinos, anti-detect browsers, and real-time gaming infrastructure. I work directly with founders and product teams, helping transform ideas into production-ready software through technical leadership, architecture design, rapid MVP delivery, and long-term product scaling. Core Expertise: • Web3 & Blockchain Development • Smart Contract Architecture (Solidity, EVM, TON) • DeFi, NFT, GameFi & Launchpad Platforms • Telegram Mini Apps & High-Load Systems • AI Applications & LLM Integrations • Distributed Systems & Event-Driven Architecture • Real-Time Infrastructure & WebSockets • Product Architecture & Technical Leadership • MVP Development & Startup Execution • Performance Optimization & Scalability Engineering From MVPs launched in under 30 days to platforms serving millions of users, I focus on building software that is scalable, secure, and ready for growth from day one.

Looking to build secure decentralized applications or scalable backend infrastructure? I bridge the gap between robust Web2 architectures and Web3 innovation. I am a Computer Science specialist in my final year, focused heavily on distributed systems and cryptography. My goal is to deliver clean, efficient, and gas-optimized code that scales. My Core Expertise: - Web3 & Blockchain: Smart Contract development (Solidity), Hardhat, Truffle, ERC-20/721, dApp integration (Web3.js/Ethers.js), and DeFi protocols. - Backend Development: Building RESTful and GraphQL APIs using [Node.js/Java/Go]. - Cloud Infrastructure: Deploying and managing containerized applications using Docker, Kubernetes, and AWS/Azure. I bring a strong academic foundation in algorithms and security, combined with a passion for shipping production-ready code. Let’s discuss how I can help bring your project to the blockchain or the cloud.

As a highly experienced blockchain developer with over 5 years of experience in the field, I have a proven track record of delivering decentralized and centralized applications that meet my client's needs. My expertise includes: ● Solidity ● Smart contract security ● Trading algorithms ● DEX and Defi projects I have a deep understanding of blockchain technology and a strong ability to solve complex problems. I have helped my clients build a wide range of blockchain-based applications, from decentralized marketplaces to centralized exchanges such as Binance, Kucoin, Deribit, Bybit and more, resulting in wide-scale adoption and usage of their applications. Additionally, I have experience in working on coding and business start-up projects related to blockchain and crypto assets/coins. My experience includes working with: ● Blockchain technology ● Consensus algorithms ● ERC20 tokens ● JSON RPC ● Transactions ● Testnets ● On-chain atomic swaps ● Cryptocurrency mining ● Coin trading ● Exchanges (both centralized and decentralized) I also have experience in running my own full nodes for BTC, ETH and ETC, and have contributed to multiple whitepapers and been involved in several completed ICOs. I am a good fit for companies who: ✅ Want to build a decentralized or centralized application but lack the technical expertise ✅ Want to launch a token sale but are unsure how to do it securely ✅ Want to build a smart contract but don't know where to start ✅ Want to build a blockchain-based solution but are unsure which blockchain to use ✅ Want a full blockchain development package that they know will meet their needs Working with me, my clients can expect: ★ A full-stack team that can handle everything from smart contract development, blockchain selection, security audits, and deployment ★ Anticipation and pre-handling of any blockchain-related challenges ★ Turnkey, secure, and scalable blockchain-based solutions ★ Elite blockchain development strategies that leading companies use ★ A positive and respectful working experience In addition to my blockchain development skills, I am also well-versed in multiple programming languages such as Python, Go-lang, C#, C++, Java, Solidity, and R, and have experience in working on coding and business start-up projects related to blockchain and crypto assets/coins. My experience includes working with blockchain technology, consensus algorithms, bitcoind, geth, ethminer, ethash, ERC20 tokens, JSON RPC, transactions, testnets, on-chain atomic swaps, cryptocurrency mining, coin trading, and exchanges (both centralized and decentralized). I also have experience in running my own full nodes for BTC, ETH and ETC, and have contributed to multiple whitepapers and been involved in several completed ICOs. I am experienced coding for traders and quants, and familiar with the mechanisms and workings of securities markets, exchanges, and market data. I am experienced in working with trading APIs and other common elements of the client/message server architectures typically seen in trading systems. I am selective about the projects I take on, and will only work with companies that align with my values of integrity and excellence. If you're looking for an experienced blockchain developer with a proven track record in DEX, Defi and smart contract development, let's discuss how I can help your company achieve its goals. I take pride in my ability to provide secure and well-designed smart contracts, and I ensure that the smart contract security is up to industry standards.