DeFi Protocol Engineer & Senior Rust Backend Developer I design and build production-grade DeFi protocols and backend systems using Rust and Solana, with hands-on experience across lending and borrowing protocols, stablecoins (CDPs), swaps, interest accrual engines, liquidation systems, and oracle-driven risk management. My work focuses on protocol correctness, capital safety, and deterministic execution — from on-chain lending logic and liquidation thresholds to off-chain services and real-time infrastructure. I stay deeply involved in implementation, writing and reviewing production Rust code while owning system architecture end-to-end. Core expertise: DeFi protocol engineering: lending & borrowing, CDPs, swaps, interest & liquidation logic Rust backend systems: Actix-Web, Tokio, Diesel, Subxt Solana & Substrate protocol development (Anchor, runtime integrations) Zero-knowledge & confidential execution: zkVMs, RISC Zero, MPC / Arcium Event-driven and real-time systems: Kafka, Redis PostgreSQL, Docker, CI/CD, production deployments Alongside protocol engineering, I bring strong system design and delivery discipline, enabling me to take complex DeFi ideas from concept to secure, production-ready systems without sacrificing performance or safety. I work best with founders and teams who need a senior, hands-on engineer who can architect, implement, and ship critical protocol infrastructure — not just advise. I’m open to senior Rust / DeFi engineering roles, protocol architecture work, and long-term engagements where deep ownership and execution quality matter.

Hi, I'm Japhet, an experienced senior full-stack developer from the Philippines specializing in React.js, Next.js, Node.js, Python, Go, AWS, GCP, AI model integration (including Chat GPT), and blockchain (smart contracts and DApps), known for creating seamless web and mobile applications with robust backends and responsive frontends to drive business growth. 💻 Technical Expertise ⭐ Frontend: React.js, JavaScript, TypeScript, HTML5, CSS/SASS, Bootstrap ⭐ UI/UX: Figma, Adobe XD ⭐ Backend: Node.js, Next.js, Express.js, PHP, Laravel, Python, Go ⭐ APIs: RESTful, GraphQL ⭐ Database: MySQL, PostgreSQL, MongoDB, Firebase ⭐ Blockchain: Smart Contracts, DApps, Ethereum, Solana, TON, Solidity, Web3.js ⭐ DevOps: AWS, Digital Ocean, Firebase, Vercel, Docker, Kubernetes ⭐ Specialized Integrations: Payment Gateways (Stripe, Razorpay, Paytm, Apple Pay), Communication APIs (Twilio, SendGrid, MessageBird) ⭐ Project Tools: GitHub, GitLab, Bitbucket, VS Code, Jira, Trello, ClickUp 💼 𝖶𝗁𝗒 𝖯𝖺𝗋𝗍𝗇𝖾𝗋 𝖶𝗂𝗍𝗁 𝖬𝖾 𝖺𝗌 𝖺 𝖥𝗎𝗅𝗅 𝖲𝗍𝖺𝖼𝗄 𝖣𝖾𝗏𝖾𝗅𝗈𝗉𝖾𝗋? 🔗𝖢𝗅𝖾𝖺𝗋 𝖢𝗈𝗆𝗆𝗎𝗇𝗂𝖼𝖺𝗍𝗂𝗈𝗇 𝗍𝗁𝗋𝗈𝗎𝗀𝗁𝗈𝗎𝗍 𝗍𝗁𝖾 𝗉𝗋𝗈𝗃𝖾𝖼𝗍 🔗𝖢𝗈𝗆𝗆𝗂𝗍𝗆𝖾𝗇𝗍 𝗍𝗈 𝖼𝗅𝖾𝖺𝗇, 𝗌𝖼𝖺𝗅𝖺𝖻𝗅𝖾 𝖼𝗈𝖽𝖾 𝖺𝗇𝖽 𝗁𝗂𝗀𝗁 𝗌𝗍𝖺𝗇𝖽𝖺𝗋𝖽𝗌 🔗𝖥𝗅𝖾𝗑𝗂𝖻𝗂𝗅𝗂𝗍𝗒 𝗍𝗈 𝗆𝖾𝖾𝗍 𝖽𝖾𝖺𝖽𝗅𝗂𝗇𝖾𝗌 𝖺𝗇𝖽 𝖺𝖽𝖺𝗉𝗍 𝗍𝗈 𝗉𝗋𝗈𝗃𝖾𝖼𝗍 𝗇𝖾𝖾𝖽𝗌 💪 Key strengths to ensure success: ✅ Mastery in NestJs, NextJs, and ReactJs development, alongside proficiency in other modern technologies. ✅ Outstanding communication skills and a strong sense of ownership for the work delivered. ✅ Comprehensive understanding of business dynamics, from conceptualizing POCs and MVPs to testing hypotheses, to crafting well-tested, maintainable applications that delight customers. ✅ Adaptable and responsive, effectively addressing challenges and adjusting to project requirements as needed. ✅ Committed to continuous learning and staying up-to-date with industry trends, ensuring cutting-edge solutions are employed in every project. 🚀 𝖧𝗈𝗐 𝖨 𝖬𝖺𝗄𝖾 𝖺 𝖣𝗂𝖿𝖿𝖾𝗋𝖾𝗇𝖼𝖾 🌐𝖲𝗒𝗌𝗍𝖾𝗆𝖺𝗍𝗂𝖼 𝖠𝗉𝗉𝗋𝗈𝖺𝖼𝗁 𝖿𝗋𝗈𝗆 𝗉𝗅𝖺𝗇𝗇𝗂𝗇𝗀 𝗍𝗈 𝖽𝖾𝗉𝗅𝗈𝗒𝗆𝖾𝗇𝗍 🌐𝖲𝖼𝖺𝗅𝖺𝖻𝗅𝖾 𝖲𝗈𝗅𝗎𝗍𝗂𝗈𝗇𝗌 𝖿𝗈𝗋 𝖿𝗎𝗍𝗎𝗋𝖾 𝗀𝗋𝗈𝗐𝗍𝗁 🌐𝖢𝗈𝗅𝗅𝖺𝖻𝗈𝗋𝖺𝗍𝗂𝗏𝖾 𝗆𝗂𝗇𝖽𝗌𝖾𝗍, 𝗈𝖿𝖿𝖾𝗋𝗂𝗇𝗀 𝗉𝗋𝗈𝖺𝖼𝗍𝗂𝗏𝖾 𝖿𝖾𝖾𝖽𝖻𝖺𝖼𝗄 🌐𝖱𝖾𝗌𝗎𝗅𝗍𝗌-𝖮𝗋𝗂𝖾𝗇𝗍𝖾𝖽, 𝖾𝗇𝗌𝗎𝗋𝗂𝗇𝗀 𝗏𝖺𝗅𝗎𝖾 𝗐𝗂𝗍𝗁 𝖾𝗏𝖾𝗋𝗒 𝖿𝖾𝖺𝗍𝗎𝗋𝖾 📩🚀 Ready to elevate your project to new heights? Don't hesitate – send a direct message or invite to the project for an exceptional experience! Let's make your vision a reality together! Keywords: #FullStackDevelopment #FullStackExpert #FullStackSolutions #ReactDeveloper #NodeJSDeveloper #PHPDeveloper #PythonDevelopment #GoDevelopment #AIIntegration #ChatGPTIntegration #BlockchainDevelopment #SmartContracts #DApps #SolidityExpert #Ethereum #Web3 #NestJsDevelopment #NextJsExpert #ReactJsApps #NodeJSSolutions #FullStackCoding #MERNStack #MEANStack #DevOpsEngineer #AWS #GCP #Docker #Kubernetes #CI/CD #Automation #RESTfulAPI #GraphQLDevelopment #CustomAPI #APIIntegration #WebDevelopment #MobileAppDevelopment #ResponsiveDesign #UI/UXDesign #Figma #AdobeXD #APIAutomation #CloudServices #ServerlessArchitectures #Microservices #Lambdas #CloudFormation #ScalableWebApps #ModernWebSolutions #BackendIntegration #SiteAvailability #PerformanceOptimization #SecurityPractices #PaymentGatewayIntegration #Stripe #Razorpay #ApplePay #TwilioAPI #SendGridAPI #CommunicationAPIs #VersionControl #GitHub #GitLab #Bitbucket #CollaborationTools #ProjectManagement #Jira #Trello #VSCode

25 years in fintech and banking — the last 5 deep in production AI. From Oracle and IBM enterprise systems to hands-on CTO and Lead Engineer of a live EU payments platform, to production AI in regulated environments. I don't build demos. I build systems that run under load, with real financial consequences. Recent production builds: → RAG platform processing 1M documents (ColPali + BGE) - 5 enterprise deals → Fraud detection ML for Raiffeisen Bank Austria - 70% loss reduction, 100k txns/month → Fine-tuned LLM Knowledge Assistant - deployed to 5 enterprises Fintech AI: fraud detection · KYC/AML · credit scoring · open banking · PSD2 · Stripe/Plaid AI systems: RAG pipelines · LLM agents · HITL workflows · computer vision (YOLO, VLMs) Stack: Python · PyTorch · LangChain/LangGraph · FastAPI · React/Next.js · CISSP certified Available for production AI and fintech engagements. EU-based, immediate start.

I’m Sanket Mokashi, a seasoned Senior Software Developer with over 8 years of experience specialising in creating dynamic and scalable web applications. My expertise lies in Rust, Python, Java, React, Node.js, and REST, among other advanced technologies. Starting my freelance journey in 2016, I’ve developed a knack for rapid learning and adapting to new technologies, evidenced by my contributions to significant projects at Amazon Lab126, where I led the India team, and other reputable organisations. In addition to leading teams, mentoring junior engineers, and ensuring the seamless integration of software and hardware interfaces, I have extensive experience in AI-powered development. I implemented a Retrieval-Augmented Generation (RAG) pipeline using Langflow and a custom MCP server to automate EC2 action ticket handling—reducing manual support intervention by 40%. I have also built an LLM-powered chatbot, leveraging Claude 3.5/3.7 with a vector database knowledge repository, serving over 50,000 daily users as an internal knowledge centre. My expertise extends to designing AI-driven automation pipelines for data-intensive workflows and integrating generative AI solutions into enterprise applications. I’ve spearheaded the implementation of event-based architectures, microservices, and cloud-native solutions leveraging AWS services, demonstrating my capability in both technical leadership and hands-on development. Let’s connect to discuss how I can bring your vision to life with my versatile programming skills, deep AI/LLM expertise, and a commitment to delivering innovative, high-impact solutions.

👋 Hi, I’m Hung Le, a Full Stack AI Engineer helping startups and businesses build AI-powered products, SaaS MVPs, LLM/RAG systems, AI agents, automation tools, and scalable full-stack applications. I have 4+ years of experience across AI engineering, backend development, frontend development, fintech systems, OCR, eKYC, chatbots, web crawling, and production-ready software. My strength is combining AI capability with real product engineering, so clients do not just get a demo, they get a practical system that can be used, improved, and scaled. 𝟏/ 𝐈 𝐜𝐚𝐧 𝐡𝐞𝐥𝐩 𝐲𝐨𝐮 𝐰𝐢𝐭𝐡: ▪ AI SaaS MVP development from idea to working product ▪ LLM/RAG applications for documents, internal knowledge, search, and support ▪ AI agents and multi-step automation workflows ▪ Custom AI chatbots with private knowledge base integration ▪ Backend API development with FastAPI, Django, Flask, Node.js, and Golang ▪ Full-stack web apps using React.js, Next.js, PostgreSQL, MongoDB, and Docker ▪ OCR, computer vision, ID/document extraction, and eKYC systems ▪ Web crawling, data pipelines, dashboards, and internal automation tools ▪ Mobile and cross-platform apps using Flutter and Android 𝟐/ 𝐂𝐨𝐫𝐞 𝐒𝐤𝐢𝐥𝐥𝐬: ▪ Programming Languages: Python, Golang, JavaScript, TypeScript, Rust, Dart ▪ Backend: FastAPI, Django, Flask, Node.js, Celery, REST API, PostgreSQL, MongoDB ▪ Frontend: React.js, Next.js, JavaScript, responsive UI development ▪ AI/ML: LLM, RAG, LangChain, Ollama, PyTorch, TensorFlow, OpenCV, YOLO ▪ AI Product Development: AI agents, chatbots, document Q&A, knowledge retrieval, AI automation ▪ Data & Automation: Web crawling, Scrapy, data extraction, data processing, workflow automation ▪ DevOps: Docker, GCP, API deployment, production support ▪ Mobile: Flutter, Android, cross-platform application development 𝟑/ 𝐒𝐨𝐦𝐞 𝐡𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬 𝐟𝐫𝐨𝐦 𝐦𝐲 𝐰𝐨𝐫𝐤: ▪ Built a multi-agent AI news discovery system that processed 150-300 articles per day, reduced duplicate content by around 70-85%, and delivered daily digests plus real-time alerts for important fintech/business updates. ▪ Developed an internal AI customer-support assistant that helped agents search company knowledge faster, reducing average lookup time from 3-5 minutes to under 1 minute per ticket. ▪ Built a local LLM/RAG-style internal wiki assistant using Ollama, document retrieval, and metadata filtering over thousands of internal pages. ▪ Developed eKYC backend services using Golang and AI/OCR pipelines, helping reduce onboarding time by up to 95%. ▪ Built Vietnamese ID Card OCR and computer vision systems using YOLO, TensorFlow, PyTorch, OpenCV, and custom image-processing algorithms. ▪ Created full-stack systems using Python, FastAPI, Django, Flask, Node.js, React.js, Next.js, Flutter, PostgreSQL, MongoDB, Docker, and GCP. 𝟒/ 𝐖𝐡𝐚𝐭 𝐦𝐚𝐤𝐞𝐬 𝐦𝐞 𝐝𝐢𝐟𝐟𝐞𝐫𝐞𝐧𝐭: ▪ I can work across the full product lifecycle, from architecture and backend APIs to AI workflows, frontend UI, deployment, and iteration. ▪ I understand both AI experimentation and practical software delivery. ▪ I focus on business results, not just technical implementation. ▪ I communicate clearly, ask the right questions, and help clients avoid overbuilding too early. ▪ I can move fast for MVPs while still keeping the system clean and scalable. I’m especially interested in projects where AI is not just a “nice feature,” but a real part of the product: reducing manual work, improving search and decision-making, automating workflows, or helping users interact with complex data more easily. If you’re building an AI-powered SaaS, internal automation tool, RAG system, chatbot, OCR pipeline, or MVP that needs both strong AI thinking and full-stack execution, I’d be happy to help you turn it into a reliable product.

I have extensive experience in most algorithmic trading platforms, (Tradestation / Easylanguage, Sierracharts, Multicharts / .Net, QuantConnect, Ninjatrader) -- I can QUICKLY automate almost any strategy logic you have in mind. I also have extensive PM experience, can help ‘optimize’ (don’t literally optimize) various strategies while avoiding pitfalls like overfitting, determine optimal allocations between systems, and get you live in as little time as possible. Proficient in Python, C++, C, C#, Rust. Experience in Java, Matlab, R, Go. I've placed highly in many worldwide trading competitions in various asset classes, have a decade of experience in Futures & Options, including at a leading OMM firm, top Hedge Fund, and have managed a mid size prop fund for past ~5 years -- I do this because I simply love new challenges, and love building strategies. I'm registered as a CPO/CTA, RMM -- with Series 3, 5, 6, 7certification. Preferred Languages: Expert in Python, Easylanguage; Proficient in C++, C#, C, SQL. Experience in Java, R, Go, Matlab Platforms: Expert in Multicharts, Tradestation / OOEL, ELCollections, ADE, Proficient in Sierra, Ami, NT8 / NT7 Frameworks/Libraries: Proficient in QuantConnect, Quantopian, NinjaTrader, CloudQuant, IBInsync, Keras, Tensorflow, Pandas, SKLearn, AWS Sagemaker. ** I DO NOT sell existing models, if you’d like a very detailed speech about why it’s financially infeasible, feel free to ask. That is all that you will receive, from me or any professional. ** I DO NOT work in Tradingview; It is not an automation platform, and live results vary too drastically to be considered a reasonable backtesting / prototyping platform. ** I DO NOT work in MetaTrader 4/5, because there are better frameworks, platforms, and implementations for any given use case. ** I RARELY accept unknown clients, none for small one off tasks. It’s simply not worth it / too unpredictable.

I am a Senior Blockchain & Web3 Developer with 6+ years of professional experience designing and delivering secure, scalable, and production-ready blockchain solutions across EVM-based networks and Solana. I work end-to-end: from architecture and smart contract design to backend automation, Web3 integrations and deployment with a strong emphasis on security, performance and long-term maintainability. My background covers DeFi protocols, cross-chain systems, multi-chain token supply, NFT platforms, and trading/automation bots, supporting both early-stage startups and established teams. Core Blockchain Expertise: EVM Ecosystem: Ethereum, BSC, Polygon, Arbitrum Solidity smart contracts ERC-20, ERC-721, ERC-1155 standards Solana Ecosystem: Rust-based programs Anchor framework SPL tokens & program architecture Web3 & Full-Stack Integration: Web3.js, Ethers.js, Solana Web3 Wallet integrations(MetaMask, WalletConnect, Phantom) Backend services(Node.js, Python) API design and event-driven architectures Bots&Automation: Algorithmic trading bots(CEX & DEX integrations) On-chain automation and monitoring tools Liquidity and Volume analytics bots Secure key management and infrastructure setup Cross-Chain & Multi-Chain Systems Cross-chain birdge architectures(lock/mint, burn/release) Multi-chain token supply synchronization Relayer and message-passing systems Oracle and validator-based verification models Bridge audits, replay protection and risk mitigation DeFi & Protocol Development AMMs, DEXs, staking, farming, vesting systems Lending & borrowing mechanisms Treasury and reward distribution logic Protocol upgrades and security hardening What you can Expect: Clean, readable, and well-documented code Security-first development approach Thorough testing and deployment support Clear communication and reliable delivery Long-term maintenance and optimization I enjoy working with teams that value quality engineering, transparency, and practical solutions. If you need a developer who understands both blockchain protocols and real-world production requirements, I can help bring your project to life.

- Go 9 Years, NodeJS, Rust - 🎬Video Live Streaming Engineer: FFmpeg/Libav, gStreamer, LiveKit, SRS - 💻Kubernetes, Backend architecture design and API development - ☁️Google Cloud Platform: Cloud Functions, Run, BigQuery, Firebase, Anthos, Video AI, GKE and all other GCP products - AWS (EC2, Lambda, VPC, Lightsail, Step Functions, Fargate, S3, etc), Azure - 🌩️CloudFlare Workers / R2 and other Serverless Computing providers, Fastly, Defederation - Network and Security development - Terraform, Docker, BaseRow, Squid http proxy - BIMI (Brand Indicators for Message Identification), VMC (Verified Mark Certificate) - HuggingFace, RunPod, Stable Diffusion, Stable Video Diffusion (SVD) - BaseRow, Screaming Frog, BigBlueButton, Jitsi, Jibri - Orange Pi, Raspberry Pi, Hardware Encoding / Decoding - RTMPS, RTMP, RTP, RTSP, SRT, WebRTC, x264,x265, h264, h265, Nvidia GPU NVENC ----- I am a highly skilled and experienced software developer with expertise in GoLang, Node.js, and WebRTC. My strengths lie in my ability to design and develop complex media applications and my in-depth knowledge of video streaming technologies such as FFmpeg/Libav, gStreamer, RTMPS, RTMP, RTP, RTSP, SRT, HLS, DASH, and WebRTC VOD. I have extensive experience in building and managing distributed systems, websites, and cloud infrastructure using platforms like Google Cloud Platform (GCP) and AWS. I have also developed and deployed numerous back-end architectures and APIs that are scalable, secure, and highly performant. I have experience building and managing distributed systems, websites, and cloud infrastructure, and I am well-versed in serverless computing. I am committed to ensuring that my projects are delivered on time and within budget, and I am always seeking new opportunities to improve my skills and knowledge. I have Master's degree in Computer Science and a strong track record of successful projects and accomplishments. I am committed to delivering high-quality results and take pride in my ability to consistently meet project deadlines.

An IT Professional with 18+ years of experience in the areas of Software Development, Project management, Business Analysis, Solution Design and Implementation with reputed organisations. An effective leader with proven abilities in leading teams during the project phase, training and guiding team members and enabling knowledge sharing among the team. I have mentored peers, juniors and occasionally given talks at prominent conferences. Hands-on experience in designing & implementing multi-tier applications and system integration solutions as a senior developer and technical lead. Adept in unit testing, code coverage, code reviews, refactoring, automation, self learning and agile development. Comfortable in interacting with people across hierarchical levels for smooth project execution. Experience of working on web development, database development, application development, testing, builds/install management, automation, code reviews, requirements gathering, estimates, design documents, UX design, etc. •Have experience in developing/maintenance of application with components designed in managed and unmanaged code using Microsoft windows technologies using C++/C#/F#/Python • C++, C# .NET and Python/JavaScript languages. • WCF, ASP.NET Web API, Node.js. • UI framework like Windows Forms, WPF, AngularJS • Microsoft SQL server and MongoDB. • Multi-threading, SOAP/ RESTful Web services, Socket Programming. • Object oriented and Functional programming style. • Algorithms and data structures. • Domain Specific Languages • MONO C# in Linux.

I build ultra fast ⚡ Rust backend systems, scalable Solana infrastructure, DeFi platforms, trading bots 🤖 and modern Next.js applications designed for high traffic production environments and enterprise scale performance. ⚡ I specialize in Rust backend engineering with async architecture, memory safe systems, parallel processing and high performance APIs capable of handling massive concurrent workloads with low latency and production reliability. I combine backend engineering with React and Next.js to deliver complete full stack Web3 and SaaS platforms. 🦀 Rust Backend Engineering ⚡ High performance Rust backend systems 🧵 Multi threaded and parallel processing architecture 🔒 Memory safe and secure system design ⚡ Tokio based async services 🚀 High throughput API development 🌐 REST APIs and WebSocket systems 🔗 gRPC microservices architecture 📡 Event driven and streaming systems 📬 Queue based distributed systems 🧠 Performance optimization and low latency systems 🏗️ Scalable production grade backend architecture ⛓️ Solana & Blockchain Development 🧠 Smart contracts using Rust and Anchor 💰 Tokenomics and SPL token systems 🏦 DeFi platforms and staking systems 🖼️ NFT minting and marketplace integrations 🔗 Wallet integration and on chain programs 📡 Real time blockchain monitoring systems 🤖 Trading bots and automation systems 📊 Arbitrage and copy trading bots 📈 Blockchain analytics and indexing systems 💻 Frontend Development (Next.js / React) ⚛️ Modern Next.js and React applications 📊 Web3 dashboards and admin panels ⚡ Real time UI systems 🔐 Wallet connected dApps 📱 Responsive UI and UX systems 🔗 API integrated frontend architecture 📈 Analytics and reporting dashboards 🗄️ Databases & Infrastructure 🐘 PostgreSQL scalable architecture 🍃 MongoDB document systems ⚡ Redis caching and real time processing 🧠 Database optimization and indexing ☁️ Cloud deployment and DevOps workflows 🐳 Docker containerized applications 🏗️ High availability distributed systems ⚙️ Tech Stack Rust | Tokio | Axum | Actix | Tonic | gRPC | WebSockets | Kafka | Redis | Docker | Kubernetes Solana | Anchor | Web3.js | Helius | QuickNode | Jupiter Next.js | React | TypeScript | Tailwind | Redux | Zustand ⭐ Why Clients Hire Me ⚡ High performance backend architecture 🔐 Secure and production ready systems 🚀 Scalable full stack Web3 development 🧠 Strong debugging and optimization skills 📞 Fast communication and reliable delivery 🤝 Long term engineering partnership mindset 🚀 Summary I build systems engineered for speed, scalability, and production reliability. My focus is always clean architecture, performance optimization, and long term maintainability. 📩 Let’s Build If you are building a Rust backend system, Solana protocol, DeFi platform or scalable Next.js application, I would be happy to discuss your project.