I build secure, scalable, production-ready systems across blockchain, backend, and DevOps. My work spans smart contracts, Solana programs, zero-knowledge workflows, backend APIs, and cloud infrastructure. I have hands-on experience with Go, Solidity, Rust, Noir, and Circom, along with Hardhat, Foundry, Slither, Aderyn, Docker, AWS, and GKE. I help teams ship reliable products in areas like: Smart contracts and protocol development Solana apps and on-chain workflows ZK proofs and privacy-preserving systems Backend engineering with Go, PostgreSQL, and APIs DevOps, CI/CD, deployments, and infrastructure hardening Recent work includes building decentralized AI and fan-engagement infrastructure, privacy-preserving proving systems, secure storage integrations, and blockchain-powered backend services. If you need someone who can own both the code and the infrastructure, I bring the full stack needed to ship fast and ship safely.

I ship production-grade Web3 products 3–5× faster by combining 7+ years of blockchain engineering with AI-augmented development workflows. From smart contracts to frontend dApps to backend infrastructure — I deliver end-to-end, not just pieces. My clients have raised $15M+ through token sales and NFT launches built on code I wrote and architectured. What I bring to your project: 🔗 Blockchain & Smart Contracts Solidity · OpenZeppelin · Foundry · Hardhat · Ethers.js Token sales, vesting, staking, farming, NFTs — audit-ready, gas-optimized, upgradeable. Chains: EVM (Ethereum, BSC, Polygon, Arbitrum), Bitcoin, EOSIO. ⚡ Full-Stack Product Development Frontend: React, Next.js, WalletConnect, Redux, i18n Backend: Node.js, Express, RabbitMQ, Redis, MongoDB DevOps: AWS, Docker, NGINX, Cloudflare, CI/CD 🤖 AI-Augmented Engineering I integrate AI tools (LLM APIs, agentic coding workflows, automated testing) directly into my development process — not as a gimmick, but as a force multiplier. This means faster delivery, fewer bugs, and more thorough code coverage. 🚀 Startup-Ready Execution Product-oriented mindset. I don't just write code — I help you define scope, avoid costly mistakes, and ship what matters. Experienced in leading small teams and working directly with founders. Ideal projects for me: — Token launches (presale, vesting, staking mechanics) — DeFi protocols and NFT platforms — Full-stack dApp development (contracts → API → frontend) — Smart contract audits and security fixes — AI-integrated Web3 tools and bots Let's talk about your project →

AI: gen AI, LLM, copilot, AI cloud services, AI agent development, foundation model development. Blockchain: trading dex and cex, trading bot. iOS: filter editor, photo editor.

Hi, I'm Trevor, a versatile software engineer with over 8 years of experience in full-stack development, blockchain engineering and distributed systems. I specialize in building scalable, secure, and high-performance applications that align with your business goals. What I Bring to the Table - Full-Stack Expertise: Proficient in React, Vue, Node.js, Express and Python. Experienced in crafting responsive, user-friendly web applications. - Blockchain Development: Skilled in Ethereum, Solidity, Solana and Rust. I’ve developed DeFi platforms, NFT marketplaces and crypto wallet integrations. - Smart Contracts: Deep knowledge of ERC standards (ERC-20, ERC-721, ERC-1155). Experienced in smart contract audits and ensuring security against vulnerabilities. - API Integrations: Strong experience in integrating payment gateways (Stripe, PayPal), FIX APIs, and custom services. - SEO Optimization & DevOps: Expertise in CI/CD pipelines, cloud infrastructure, and optimizing applications for maximum visibility and performance. Key Projects Victus Global, WildGo Why Choose Me? I’m detail-oriented, reliable and committed to delivering exceptional results. Whether it's creating a seamless user experience or ensuring your blockchain platform is secure and efficient, I bring innovation and precision to every project.

I have been an IT engineer for more than 12 years, including the Backend part, Database optimization, Server setup, WEB3, DevOps, custom blockchain development, and API of other Services. Have experience in developing projects from the very start in JavaScript, Golang, Rust, C++, Dart, Erlang, and Solidity. I am highly responsible for my work, punctual, and attentive to little details. I like complex tasks to do and finding nonlinear decisions. I was part of a team of such big projects as: - Elrond (EGLD) : Launch of IEO, development of a sharding system; - Crypto wallet Bread (BRD) : Development and audit of payment gateways; - CoinPayments : Development of payment gateways and storage of cryptocurrency funds. By working with me, you can be sure of the stable functioning of your application. Listed below are my experience and skills. – JavaScript (ReactJS, NodeJS, ECMAScript); – WebAssembly; – C++; – Rust; – Solidity; – Erlang; – Dart; – Golang. – GraphQL; – PostgreSQL; – LevelDB; – RocksDB. – PlayCanvas; – WebXR. – Blockchain Protocols; – Copy trading protocols and architecture; – Smart Contract Audit; – Exchange development (CEX); – Decentralized exchange development (DEX); – Arbitrage and Trading bots development; – ICO/IDO/IBCO/LBP/IFO; – Flash loans bots; – Front-running, snipe, and sandwich bots; – Wallet (flutter) development configuration; – TradingView configuration; – Meta; – Metaverse; – DeFi; – NFT; – GameFi. I've worked with the following services: – AWS (EC2, ELB, ASG, RDS, ElastiCache, S3); – AWS Serverless Fundamentals (Lambda, DynamoDB, Cognito, API Gateway); – Monitor, Trace and Audit your microservices using CloudWatch, X-Ray, and CloudTrail; – Linux, AWS, Bash & Python Scripting, Jenkins, Ansible, Docker, Kubernetes, Cloudformation, Terraform; – Sentry; – Pingdom; – Supervisor; – uWSGI; – Vagrant; – Git, CLI; – Ansible; – Apache; – Datadog; – Docker, Docker Compose; – Gunicorn; – Nginx. – CCXT; – OpenDAX; – OpenZeppelin Truffle; – MetaMask; – Ganache; – Remix IDE; – Geth; – Parity; – Web3.js – Ethers.js; – Infura; – Embark; – Brownie; – Alchemy; – Drizzle. – Bitcoin; – Lightning Network; – Ethereum Smart Contracts(ERC-20, ERC-721, ERC-223, ERC-777, ERC-1155, ERC-1337, ERC-3643 (ex-T-REX) and the ERC-1400); – Binance Smart Chain (BNB); – Cardano (ADA); – Solana (SOL); – Avalanche (AVAX); – Terra (LUNA); – Polkadot (DOT); – Polygon (MATIC); – Cosmos (ATOM); – Chainlink (LINK); – NEAR Protocol (NEAR); – Uniswap (UNI); – TRON (TRX); – Decentraland (MANA); – PancakeSwap (CAKE); – Toncoin (TON).

Hello, "28 Successful Jobs related to data engineering" Why should you hire me ? ✅ 750+ Upwork Hours Completed ✅ 100% Customer Satisfaction Some Reviews: 💡 A simple python transcript for traffic profiling "Hands down, Muzammil is the best Python programmer I’ve worked with so far. He’s extremely professional, smart, dedicated and easy to work with. He came in ahead of schedule and under budget with well organized and well-documented code. Not just that, I came up with some last-minute amendments in design and Muzammil willingly did all, making sure that I’m satisfied with the final deliverable. Simply outstanding! Will definitely have him for my upcoming projects. Thank you Muzammil!" 💡Python Interface to Binance Smart Chain Exchanges "Muzammil has been great to work with on a variety of blockchain and programming tasks and projects we have set him over the last 12 months. He has maintained a high level of professionality and has managed to successfully tackle all of the problems we have had him working on so far. Has proven to be a real asset to our business." - FTMC Co. I can create automation tools and bots in Python to give you a comprehensive solution for scraping websites, ingesting data and database integration. Furthermore I also have experience with setting up a Bitcoin/BSC/Ethereum Node and writing robust code in Solidity for smart contracts. Services I provide as an Data engineer: ⦁ Data Cleansing using Python ⦁ Data Wrangling with Pandas and Numpy ⦁ Data Extraction with python requests from API calls ⦁ Web Scraping with BeautifulSoup and Scrapy ⦁ Data Manipulation (Excel, XML, CSV, JSON, YAML, image files) ⦁ Design/Development/Management of ETL/ELT solutions ⦁ Familiarity with Microsoft Azure based Data Warehousing (Azure SQL, Azure Synapse Analytics, and Azure CosmosDB). ⦁ Familiarity with Microsoft Azure based ETL tools (Azure Data Factory, Azure Stream Analytics, and Azure Databricks) ⦁ Familiarity with Amazon Web Services (AWS EC2, AWS Lambda, AWS DynamoDB, AWS Redshift, AWS EMR Clusters, and AWS EKS) ⦁ Integration of Apache Kafka for smooth streaming ⦁ SQL Databases (MySQL, Postgresql, and MSSQL) ⦁ NoSQL Databases (MongoDB, and GraphQL) ⦁ Familiarity with SQL Server Management Studio (SSMS) ⦁ Designing Data Warehouse based on Star Schema and Snowflake Schema Orchestration Services I provide: ⦁ Apache Airflow ⦁ Orchestration with Docker compose ⦁ Building pipeline in Jenkins Data Visualization Service I provide: ⦁ PowerBI Automation and Backend Services I provide: ⦁ Automation testing using selenium ⦁ Django Backend ⦁ Creating RESTFUL APIs with FastAPI AI Services I provide: ⦁ Integration of OpenAI's gpt 4 and gpt 4 turbo ⦁ Integration of Google Bard ⦁ Implementing ML models ⦁ Integration other LLM's in your application Blockchain Services I provide: ⦁ Blockchain Development (Ethereum, Binance Smart Chain, Solana, Xinfin, Avalanche, Polygon) ⦁ Blockchain Consultancy ⦁ Dapps Development (Liquidity contract, Yield farming, NFT marketplace, Verification contract) ⦁ Smart Contracts (Solidity) ⦁ Setting up a Node (Bitcoin/BSC/Ethereum/Solana) ⦁ Full-Stack Blockchain Development ⦁ Integration of Dapp with Reactjs

I'm a certified Blockchain Engineer and Smart Contract Auditor with strong educational background having experience of more than 10 years. Skilled in JavaScript, Solidity, Rust and python language and creating Rest APi. I have led projects related to Assets Tokenizations, creating DApps, Decentralized Anonymous Organization (DAO) and DEFI. As a Full Stack Developer I have a 5 year experience. I also provide consultations, developments to Banks, insurance, Healthcare and logistic solutions to bring about change through using blockchain. Smart Contracts Audit is a crucial step to ensure the security and reliability of projects. My services for EVM Based Smart Contracts offer detailed reports to bring safety to client project and investors. The audit process is highly iterative, so i worked with the client until he is satisfied with the results before issuing a report. I performed a generic review of every aspect of the project's architecture, including security vulnerabilities, general best practices in code design and implementation. ✅ Smart Contract Audit ✅ Blockchain Security ✅Assets Tokenizations ✅Token economics Design ✅Launch-Pad IDO DAPPs ✅ICO - IGO Smart Contract ✅CrowdFunding Smart Contract ✅Decentralized Lottary Smart Contract ✅NFT MarketPlace ✅NFT Minting ✅ Stable coin ✅Proxy Smart Contract FRONTEND: (1) Next.js (Integration using Web3.js) (2) React.js (Integration using Web3.js) BACKEND: Node is, Express.js, SQL, MonGodb ----------- Solidity, Blockchain, Smart Contracts,Rust I can help you with: - Create and deploy smart contracts - Create and deploy NFTs ERC-1155 and ERC-721 - Create and deploy ERC20 and BEP20 Tokens -Create a CrossChain smart contract - Verified and publish - Website development ---------------- Testing on TestNet before deploying on the MainNet 100% ownership Source Code NOTE: I am open to collaborations on other projects as well, feel free to contact me anytime. I am online 24/7, I will get back to you in a short amount of time

Smart Contract Engineer with close to 4 years of experience, specializing in architecting secure, efficient, and scalable blockchain solutions. Proven track record of delivering high-quality products for leading platforms and collaborating with over 50 global clients.

I am a Full Stack Blockchain Developer with hands-on experience in building smart contracts, Web3 applications, blockchain wallets, mobile apps, and MERN stack applications. I develop complete blockchain-based products where smart contracts, mobile/web apps, wallet integrations, and backend systems work together smoothly. I work with Solidity for smart contract development and build mobile applications using modern frameworks, along with React.js / Next.js for web interfaces. On the backend, I use Node.js and Express.js to build secure and scalable APIs, manage application logic, and handle database operations. I integrate blockchain functionality using Ethers.js and Web3.js, enabling secure wallet connections, transactions, and on-chain interactions. What I can help you with: 1.Smart contract development (ERC20, ERC721, basic DeFi logic) 2.Blockchain wallet apps (send/receive, balance, transaction history) 3.Mobile app development with Web3 integration 4.Full-stack dApps (Blockchain + Mobile/Web) 5.MERN stack development (MongoDB, Express, React, Node.js) 6.Wallet connect, token swaps, and crypto payment flows 7.Clean, responsive UI for web and mobile I am motivated to grow on Upwork by delivering high-quality work, writing clean code, and maintaining clear communication. If you’re looking for a developer who understands blockchain, mobile apps, and Node.js backend development, I’d be happy to collaborate on your project. Let’s connect and work together.

Senior Web3 & Blockchain Engineer with 8+ years of experience designing and delivering high-performance decentralized systems, including DeFi protocols, smart contracts, AI-powered blockchain applications, and full-stack dApps. My focus is not prototypes—I engineer auditable, attack-resistant smart contract systems that handle real liquidity, real users, and real-world adversarial conditions. What I build: ▸ Trading Algorithms & FinTech — HFT bots, arbitrage systems, algorithmic market-making, FIX Protocol integration, MEV bots, order book DEXs, backtesting frameworks, real-time signal processing, and liquidation engines. ▸ DeFi Protocol Engineering — Staking, lending, yield aggregation, AMMs, liquidity pools, token vesting, DAO governance, and RWA tokenization — all security-first. ▸ Smart Contract Security — 90% first-pass audit success rate. Foundry fuzz testing, invariant-driven validation, adversarial exploit prevention, and gas-optimized storage patterns. ▸ Full-Stack dApp Delivery — End-to-end from Solidity contract architecture through Next.js + Wagmi/Viem frontend, Web3 backend APIs, and cross-chain infrastructure. ▸ Enterprise & Compliance — HIPAA-certified blockchain for healthcare: PHI protection, audit trail immutability, access control governance. Delivered for Tata Steel, Skoda Auto, Pidilite, and Hungama. Proven results: ▸ $1B+ TVL secured across DeFi protocols in production ▸ 1.8M TPS high-throughput infrastructure tested under load ▸ 50+ production blockchain systems delivered globally ▸ 90% first-pass smart contract audit success rate with 9+ scores ▸ Order Book DEX on Algorand — live in production ▸ Layer-0 blockchain architecture — enterprise + UN-aligned initiative Technical stack: Contracts: Solidity · Foundry · Hardhat · OpenZeppelin Trading: Python · FIX Protocol · Binance/Kraken APIs · Backtesting · WebSocket Frontend: Next.js · TypeScript · Wagmi · Viem · Ethers.js Chains: Ethereum · Polygon · BSC · Arbitrum · Base · Optimism · zkSync Storage: IPFS · Arweave · Filecoin Security is not a layer — it is the foundation of every system I build. If you need a senior technical partner who can take your trading algorithm, DeFi protocol, or blockchain product from architecture to production with zero shortcuts — let's build.