I combine 13 years of trading experience, a finance degree, and hands-on product leadership in crypto to build and secure the things that move money on-chain. I was Product Owner of a large crypto project — from zero to launch, tokenomics to smart contract architecture, managing dev teams while personally shipping critical infrastructure. I understand both sides: what the business needs and how the code must work to not lose funds. Smart contract security I audit Solidity contracts for reentrancy, access control, oracle manipulation, front-running, precision loss, and economic exploits. I don't just find bugs — I understand the financial logic behind the protocol, which lets me catch vulnerabilities that pure-code reviewers miss. Recent audit: found critical issues in a contract that passed two prior reviews. Trading systems & execution infrastructure I design and build production trading bots for CeFi and DeFi venues: Polymarket penny sniping bot with Chainlink oracle consensus, CLOB order signing, and Telegram control panel. Exchange integrations: Binance, Bybit, OKX, Interactive Brokers, Polymarket (Web3) Signal strategies: mean reversion, momentum, arbitrage, market making, ML-enhanced signal fusion Full lifecycle: backtesting → shadow trading → live execution → monitoring AI & agent development I build AI-powered tools for crypto and trading — from LLM-driven sentiment analysis to MCP servers that give Claude and other AI agents real-time access to market data. I work with scikit-learn, PyTorch, Hugging Face transformers, and LangChain for custom model pipelines. Tech Solidity · Python (asyncio, web3.py, ccxt, FastAPI) · Node.js · MQL4/5 · Docker · PostgreSQL · Redis · AWS How I work Fixed-price milestones through Upwork escrow. Each deliverable is tested, deployed, and documented. I communicate in advance when something will take longer than expected — no silent delays. Post-delivery support included.

I am a professional blockchain developer with expertise in Solidity and Rust, along with frameworks such as Truffle, Hardhat, and Foundry. Additionally, I have strong knowledge in full-stack development, specializing in Node.js and Next.js. In terms of experience, I have successfully completed several projects and have worked onsite with multiple reputable companies as both a blockchain and full-stack developer. This exposure has given me a deep understanding of client requirements. I excel at analyzing client needs and providing efficient, tailored solutions to meet project goals effectively.

If you’re a busy professional juggling emails, schedules, and endless admin tasks, you’re probably spending too much time *in* your business instead of *on* it. I help business owners, executives, and founders regain control of their time by handling the tasks they shouldn’t have to worry about—accurately, proactively, and with complete confidentiality. I understand that hiring a Virtual Assistant isn't just about delegating tasks—it’s about trust. You require someone reliable, organized, and capable of effectively following through without constant supervision. That’s exactly how I work. I treat your business as if it were my own, giving it my all, and ensuring that nothing falls through the cracks. **Here’s how I support my clients:** * Email and inbox management (prioritization, follow-ups, zero inbox systems) * Calendar and appointment scheduling without conflicts or back-and-forth * Administrative support and document organization * CRM management, updates, client follow-ups, and task tracking * Travel planning, research, and data entry * Creating SOPs so processes stay consistent and scalable **Why clients enjoy working with me:** * Clear, proactive communication * Strong attention to detail * Respect for deadlines and confidentiality * Client-focused approach. * Problem-solving mindset. I’d be happy to discuss how I can support you if you want to reduce your work stress and free up your time to focus on more important issues. Send me a message and let’s see if we’re a good fit.

🚀 Full-Stack Blockchain & MERN Developer | Solidity Smart Contracts | Web3 dApp | DeFi | NFT Marketplace Need a Solidity smart contract developer or a full-stack Web3 engineer who also builds production-ready frontends? You found the right profile. I'm Muzammil Malik, a Full-Stack Blockchain & MERN Stack Developer with 4+ years of experience building secure, scalable Web3 and Web2 applications for clients across Europe and the US. I specialize in Ethereum smart contract development, NFT marketplace development, DeFi protocol engineering, and full-stack dApp development using React.js, Next.js, and Node.js. 💎 What I Build: ✔ Solidity Smart Contracts (ERC-20, ERC-721, ERC-1155, ERC-4337, BEP-20), gas-optimized, OpenZeppelin-secured & audit-ready ✔ NFT Marketplace Development with lazy minting, Dutch auctions, royalties & IPFS/Pinata storage ✔ DeFi Platform Development: staking, yield farming, DAO governance, ICO/IDO/IFO token launchpads ✔ Real Estate Tokenization dApps & cross-chain bridge development (Ethereum, Polygon, BSC, Solana, Base) ✔ Full-Stack MERN & Next.js dApp frontends with Node.js REST APIs, Express & MongoDB ✔ Crypto wallet integration (MetaMask, WalletConnect, Coinbase Wallet), Stripe & crypto payment gateways, AWS cloud deployment 🛠 Tech Stack: Solidity | Hardhat | Foundry | OpenZeppelin | ThirdWeb | Chainlink Oracles | IPFS React.js | Next.js | Node.js | TypeScript | TailwindCSS | MongoDB | GraphQL AWS (EC2, S3, Amplify, Cognito) | Docker | Firebase | XMTP | Ethers.js | Wagmi ✅ Smart Contract Developer ✅ NFT Marketplace Developer ✅ DeFi Developer ✅ Web3 Frontend Developer ✅ MERN Stack Developer ✅ Blockchain Consultant 📩 Available 24/7. Message me or click "Invite to Job" and let's build.

Senior Full-Stack / Backend Engineer with a proven track record of building scalable, fault-tolerant systems for government platforms, dating & social apps, e-commerce, fintech, internal business tools, and high-load SaaS products. I design and implement clean, maintainable architectures (DDD, Clean, Hexagonal), optimize performance, and lead systems from MVP to production-scale. Core Backend / Full-Stack Stack: PHP (Laravel, Symfony, Yii2, Sylius, API Platform), Node.js (NestJS), SQL & NoSQL (PostgreSQL, MySQL, MongoDB), Redis, RabbitMQ, Elasticsearch, Docker, Kubernetes, AWS, REST/gRPC/GraphQL, React.js, Next.js, Vue.js Web3 / Blockchain: Solidity, OpenZeppelin Contracts, IPFS, Pinata, Chainlink, The Graph, Moralis, Alchemy, Web3.js, Viem, Wagmi, RainbowKit, - building dApps, smart contract integrations, wallet connections, DeFi/NFT products Other Expertise: Full lifecycle ownership - architecture, backend, APIs, frontend, cloud infrastructure, CI/CD, code reviews, mentoring developers

I am a Lead Web3 Engineer with over six years of experience in Solidity smart contract development, specializing in protocol architecture and security. In my current role, I have successfully delivered more than 40 production-grade contracts for tokenized real-world assets, utilizing tools like Foundry, Hardhat, and OpenZeppelin. My expertise spans RWA tokenization, DeFi systems, and OTC trading infrastructure, enabling seamless cross-chain asset flows. I have built robust smart contract systems for tokenized equities, Treasury bills, gold-backed NFTs, and integrated complex functionalities such as KYC/AML verification and Chainlink CCIP. Additionally, my background as a smart contract auditor equips me with the skills for secure design and rigorous testing. If you're looking for a strategic partner to elevate your blockchain projects with cutting-edge solutions, let's connect and explore how I can contribute to your success.

Proficient in developing robust React Native applications and collaborating to achieve project goals. My skills include React Native, Javascript/Typescript and Git version control. Let's connect and discuss your next big idea!

I specialize in developing innovative applications using React Native, focusing on creating seamless user experiences for mobile and web. With a foundation in app building at a prominent tech organization, I leverage my skills to turn complex ideas into functional solutions. My experience as a TON App Builder has refined my ability to work efficiently in dynamic environments and deliver projects that meet client goals. I am adept at collaborating closely with stakeholders to ensure every detail aligns with your vision. If you're looking for a dedicated developer who combines technical expertise with a keen understanding of user interaction, let’s connect and discuss how I can elevate your project.

If you need a serious RAG system, a real-time AI pipeline, or a production-ready AI backend — and you’re struggling with latency, hallucinations, scalability, or unreliable data flows — I’m here to build it properly. I’m an AI & Data Engineer specialized in RAG architectures, real-time data pipelines, and AI-powered backend systems. I help startups and tech-driven companies transform complex data into scalable, reliable, and measurable production systems. I don’t build demos. I build systems that run in production.

✅ Award-winning AI, Machine Learning, & Software Development Specialist ✅ 10+ years of experience ✅ 130+ projects delivered ✅ Excelling in delivering Fortune 500-scale projects Hi there! I'm a Senior Full Stack AI/ML Engineer, with a proven track record of delivering high-impact solutions for Fortune 500 companies, Silicon Valley startups, and global enterprises. I specialize in building custom MVPs and end-to-end Web, Mobile, SaaS, AI/ML, Web3, CRM, ERP, and cloud-native applications across a wide range of industries. I work as a hands-on technology partner, supporting every stage of the development lifecycle—from concept and design to deployment and long-term maintenance. I genuinely love helping businesses build kick-ass software & artificial intelligence products! With a proven track record of excellence in software development, I am recognized as part of the top 1% of talent in the industry, consistently delivering high-quality solutions for complex projects. My technical expertise spans a broad range of areas, allowing me to solve intricate problems and drive innovation for clients in various industries.. After 10 years of experience in building and launching consumer software products, I have developed a deep specialization in software and AI development. As an individual contributor, I bring a unique combination of skills as an engineer, digital strategist, designer, and QA expert. My ability to lead complex projects from conception to launch has consistently resulted in innovative solutions and successful outcomes: ✅ AI: RAG (Retrieval Augmented Generation), Natural Language Processing (NLP), VSC, Machine Learning (ML), PA, Neural Networks, OpenAI and similar technologies, PyTorch, TensorFlow, Keras, Generative AI, Custom AI solutions, LLM, AI driven development, AI-powered applications, Deep Learning, Computer Vision, AI algorithms, Data Science ✅ Mobile App Development: React Native, Flutter (Swift for native iOS projects and Kotlin ✅ Web Development: Angular, React, Vue, Next.js ✅ Back-end Development: Python, NodeJS, PHP ✅ Digital Experience Design: User-Centric Research & Analysis, Strategic UX and UI Design, Scalable Design Systems, Evaluation & Accessibility Assurance Accomplishments: ⭐️As certified member of the AWS Partner Network, my expertise has been formally recognized by Amazon. This affiliation is rare among freelancers and agencies and gives me direct access to resources and best practices most don’t have. ⭐️I’ve done projects for some big names: Fortune 500 companies ⭐️Past clients have used web and mobile apps developed by me to raise over $50 million (USD) in funding If you have read this far, please note that I appreciate you taking the time to learn about me. Personally, it’s been an amazing journey and knowledge exercise to get to this level of competence in AI and software development. Software Development: Full-Stack Development | Web and Mobile Development | Web Application | Android | iOS | Custom Web3 dApps | Smart Contract | Crypto Wallet | AI Agent Development | AI Bot | CMS Development | Machine Learning AI/ML | NLP | Data Analytics | ETL | SaaS Development | MVP | Database Architecture | API Development | dApp Development | AWS | GCP | DevOps | MERN | MEAN | LAMP | QA/QC Tech-stack: ⁃ Front-End Development: React.js, Vue.js, JavaScript, TypeScript, Tailwind CSS, HTML, Angular, jQuery ⁃ Back-End Development: Node.js, Golang, Rust, C++, Zig, Express.js, Next.js, NestJS, Nuxt.js, Python, Django, Java, Spring, Laravel, PHP, Firebase, Ruby on Rails, Kotlin, Swift, Flutter ⁃ Database Management: MySQL, MongoDB, PostgreSQL, BigchainDB ⁃ Blockchain: Ethereum, Solana, Solidity, Anchor, Smart Oracles, Chainlink, DeFi, DEX, Crypto Hyperledger Fabric, Web3.js, Ethers.js ⁃ Messaging/Queuing: Apache Kafka, RabbitMQ, Amazon SQS, Redis Streams, NATS, Adaptive Aeron ⁃ API Integration: RESTful APIs, REST, FastAPI, GraphQL, gRPC, OpenAPI, WebSockets, Microservice ⁃ AI Integration: Open AI, Claude, Gemini, ChatGPT, Llama ⁃ Machine Learning (AI/ML): AI Agent, AI Bot, Python, TensorFlow, PyTorch, LangChain, OpenAI GPT, FastAPI, Apache Spark, Hugging Face, AWS SageMaker, OpenCV, Vertex AI, RAG, LLM finetune, NLP, ML ⁃ AWS Tools: Lambda, CloudFront, EC2, S3, Kinesis, Kubernetes, Docker, Nginx ⁃ Version Control: Git, GitHub, Bitbucket