Sonu R.

I am a Senior Full-Stack Engineer with 11+ years of experience delivering scalable enterprise applications, modern web solutions, and advanced blockchain/Web3 systems. My expertise spans Java Spring Boot microservices, Node.js, Vue/React, Hyperledger Fabric, Ethereum, Pega BPM, and UIPath automation. I build high-performance, secure, and maintainable solutions with strong architecture, quality coding, and reliable delivery. 🖥️ FULL-STACK DEVELOPMENT (PRIMARY EXPERTISE) 11+ years of experience in enterprise & web application development Java Spring Boot (REST APIs, Microservices, Spring Security) Node.js / Express backend services Front-end: Vue.js, React.js, AngularJS Microservices (Spring Cloud) JWT / OAuth2 / RBAC authentication MySQL, PostgreSQL, MongoDB Docker, Kubernetes, CI/CD pipelines Responsive UI (HTML5, CSS3, JavaScript, Bootstrap) 🔗 BLOCKCHAIN, WEB3 & DECENTRALIZED TECH Hyperledger Fabric & Hyperledger Composer Ethereum Smart Contracts (Solidity) Web3.js & Ethers.js integrations DApp development (React/Vue + Web3) ERC20, ERC721, ERC1155 token development Smart contract audits (Hardhat, Truffle) Crypto wallet interactions & blockchain APIs Chaincode development & blockchain network setup Docker/K8s for blockchain deployments IBM Blockchain Essentials Certified ⚙️ PEGA BPM EXPERTISE (CLSA, CSSA, CSA) SmartDispute, CPM frameworks Workflow automation & decisioning UI development (Harness, Sections) Performance tuning (Tracer, PAL, SMA) Rule migration, patching, packaging Hotfix installation & production support 💻 BACKEND / ENTERPRISE ENGINEERING Java, J2EE, EJB, Hibernate, JDBC Spring Boot, Spring Security, Spring Data JPA Kafka, RabbitMQ REST / SOAP services WebSphere, WebLogic, Tomcat, JBOSS 🤖 RPA / UIPath AUTOMATION UIPath Certified (Basic, Advanced, Orchestrator) Automations for finance, insurance & operations UIPath + Pega + backend integrations API-based automation workflows ✔️ WHY CLIENTS CHOOSE ME 11+ years of senior-level experience Strong full-stack + blockchain + enterprise expertise Clear communication & excellent client collaboration Fast, reliable, and detail-oriented Architecture → Development → Deployment (end-to-end ownership) Clean, scalable, maintainable codebase Team leadership experience 🚀 WHAT I CAN BUILD FOR YOU Full-Stack Applications Java Spring Boot microservices Node.js + Vue/React platforms Admin dashboards & web portals API-driven architectures Blockchain / Web3 Ethereum smart contracts Hyperledger Fabric networks Web3-enabled dashboards & apps NFT platforms & token systems Pega & Automation BPM workflows and UI development UIPath automation bots Enterprise process automation