Professional Summary  IT Leader and Result-driven Professional with 15.0 years of Experience in Software Development and Rich Teaching Experience.  To build a career in a Teaching profession to help and motivate students in achieving their goals through my best Knowledge and Efforts.  Involved in developing Client-Server Business Application, Blockchain Application, Big Data Application and Mobile Application with Core Java 1.8, Android, BigData(Hadoop) and Blockchain Technology.  Rich working Experience in Java, Scala, Python, Spark Framework and Blockchain.  Excellent work Experience in Blockchain Technology (Hyperledger, Bitcoin and Ethereum).  Expertise in Ethereum, Smart Contracts using Solidity.  Experienced in Hyperledger Fabric, Composer and Chaincode using Golang.  Strong Coding skills in UNIX, Golang, Docker, Node.js, web3.js and ReactJS.  Expertise in Hadoop Ecosystems and MapReduce, Oozie, Sqoop, Hive.  Good work Experience in Javascript, HTML5, JSON and Webservices.  Rich Teaching Experience in JAVA, SCALA and Python 3.  Good Teaching Experience in C++, C, Linux and Data Structures.  Excellent Teaching Experience in Big Data and Blockchain Technologies.  Have an excellent communication skill to deliver the subject in an easy and effective way.  Have a caring attitude towards Student’s needs and concerns.  Interaction with Students for Soft Skills enhancement.  Strong Oral & verbal Communication Skills.  Positive attitudes towards learning new things.  Excellent team player with problem solving capabilities.  Highly motivated, energetic Self-starter with good analytical, interpersonal skills. Technical Skills Operating Systems : Windows, Linux (Ubuntu) Programming Languages : Java, J2EE, Spring Boot, Scala, Python Scripting Languages : HTML5, JavaScript, Unix, node js, React js Frameworks : Android, Hadoop (BigData), Spark BigData Technology : Hive, Pig, Oozie, Flume, Sqoop, Spark Streaming Blockchain Technology : Bitcoin, Ethereum, Hyperledger, NFT Database : Oracle-9i, SQLite, HBase, Cassandra Container Technologies : Docker, Kubernetes Cloud Technologies : AWS, Azure Architectures : MVC, MVP, MVVM IDE used : Eclipse, Remix, Visual Studio Code Tools : Maven, JUnit, GitHub, Jenkins, JIRA DESIGN PATTERN : Factory Pattern, Abstract Factory Pattern, DAO pattern, Adapter Pattern, Builder Pattern. Tutoring Approach  To build a career in a teaching profession to help and motivate students in achieving their goals through my best Knowledge and Efforts.  My teaching philosophy is based on the idea that learning happens in an environment of mutual respect in which the student is encouraged to think and make new connections for themselves.  I always focus on how to find the solution, not on how complex the problem is-: this Problem-solving art is the best approach in today’s world.  My approach varies depending on the student’s needs and learning style. However, my teaching philosophy is based on encouraging students to think for themselves using real-world examples.  I start from topics the students are comfortable with and move gradually towards more complex areas as their confidence builds. I use questions and examples to check understanding continually.  I believe passionately in the huge value of tutoring to students and take great satisfaction in looking my students achieve their full potential. Academic Credentials  MCA from Ravenshaw University, Cuttack, Odisha with 76%. Personal Profile Gender : Male Marital Status : Married Nationality : Indian Bijayshree Dash Bangalore

Over the last 9 years, I have developed a wide range of application/analytical tool using Hadoop/MapReduce/Hive/Hbase, Spark, Kafka, AWS EC2, EMR, Lambda, Data pipeline, CassandraDB, MongoDB, DynamoDB, Java/J2ee/Spring/Struts/Hibernate/Securities and Oracle/PL/SQL.Also worked on application server like Tomcat/Weblogic/Jboss. My core competency lies in complete end-to-end business solutions and have also performed diverse role from developer to architect and I am seeking opportunities to provide solutions for you or your business. I also SCJP and OCA certified. Worked on many projects in upwork: 1. Statistics gathering database redesign/optimization: In this project, the data is collected from clickstream/events and are stored successfully in NoSQL DB. Various metrics/insights are generated from the data stored. Technical stack used Hadoop, AWS, Cassandra DB. 2. Nutch on EMR expert: In this, data scrapping using Nutch, Hadoop, custom crawler/bots. The scrapped data is analysed using algorithm and insights are stored in ElasticSearch. 3. Payment Gateways & Shopping Carts: In this assignment, the content and transactions data are collected from various e-commerce sites. The data is then processed to detect for fraudulent activities. Technical stack used GAE, Data Store. Also, worked on many projects as Hadoop Expert/Engineer.

9+ years of experience in Requirements Analysis, Detailed Design, Development, and Implementation of various applications. Extensive experience in handling complete SDLC, have worked on the development enterprise applications along with Agile methodology. A result-driven technical, professional, an effective communicator & team player with honed analytical, problem solving abilities. KEY SKILLS: Big Data Technologies: Hadoop, Hbase, Hive,Spark, kafka, Pig, MapReduce, Sqoop, Flume, MongoDB, R, Data Analysis. Java Technologies: JAVA/EE, Apache Flex, JSP, Servlet, Spring, Hibernate, iBatis, REST Web Services, Oracle, Jenkins.

I specialize in quality assurance engineering with a robust 15 years of experience in designing and evolving automation test frameworks. My expertise lies in utilizing Selenium with Java and Python, seamlessly integrating these into CI/CD pipelines for continuous quality validation. I leverage AI-assisted testing to enhance workflows, generate intelligent test cases, and optimize automation processes. My hands-on experience with GenAI tools accelerates QA efforts, ensuring comprehensive test coverage while minimizing manual intervention. I excel in simulating real-world user behaviors and edge cases to identify risks early in the development lifecycle. Having thrived in Agile environments, I collaborate closely with engineering teams to embed quality throughout the Software Development Life Cycle. If you're looking for a QA professional who can elevate your project's quality and efficiency, let's connect.

🌟 Senior Full-Stack Engineer & Solution Architect | .NET, React, Azure | AI-Assisted Development 💬 “Nitin is an exceptional developer with deep architectural insight—delivers efficient, scalable solutions and communicates complex ideas clearly.” — Dhwani K., BCG 👋 Hi there, thank you for checking out my profile! I’m Nitin, a Senior Full-Stack Engineer (11+ years) helping businesses modernize legacy systems, ship modern React frontends, and build secure .NET + Azure backends—always with a strong architectural foundation and future-ready design. I’ve delivered projects for Microsoft, BCG, Harman, Nagarro, Digital Juice, BusyBoxx, Lutron, McCarthy & Vaughn, and MROCorp across industries including healthcare, airlines, lighting/IoT, construction, and e-commerce. ✨ My differentiator: I combine proven engineering practices with AI-assisted development (Copilot, ChatGPT, Cursor) to accelerate productivity, improve documentation, and deliver enterprise-ready solutions faster. ✅ What I Do (Full-Stack End-to-End) ⚛️ Frontend Engineering → Responsive UIs with React, TypeScript, MUI5, Tailwind, TanStack (Query, Table, Virtual), and advanced charting. Migrated old ASP.NET/Angular apps to React/Angular latest with better performance and usability. 🖥️ Backend & APIs → Robust .NET 6/8 Web APIs, EF Core, Dapper, SQL Server—modular, secure, and scalable. Skilled with microservices and modular monolith architectures. 🗄️ Database & Search → Expertise in SQL Server, MongoDB, Elasticsearch, Redis for high-performance queries and intelligent search features. ☁️ Cloud & DevOps → Deployments on Azure App Services, AKS with Pods, IIS, Docker, CI/CD pipelines. Focused on secure, observable, and highly available systems. 🔐 Identity & Security → Migrated legacy ASP.NET/custom auth to OpenID Connect / OAuth 2.0 / JWT with ASP.NET Identity. Implemented RBAC and SSO-ready solutions. ⚡ AI-Driven Productivity → Leveraging Copilot, ChatGPT, Cursor AI to accelerate development, streamline testing/documentation, and deliver enterprise-ready solutions faster. 🚀 Recent Highlights 🏗️ McCarthy Vaughn Constructions → Delivered Safety Audit & Leadership Engagement modules with React + .NET 8 + SQL Server. Migrated from ASP.NET WebForms to modern stacks, deployed on Azure, and implemented reporting, user management, and authentication modernization. 💡 Lutron (Lighting & IoT) → Migrated legacy .NET Framework & Angular apps to React, Angular latest, and .NET 8 with a microservice architecture and secure token-based authentication. ✈️ Airlines (BCG) → Built shared libraries and data-heavy React UIs (ZBN, Pathfinder, Sentry) for real-time operations and disruption management. 🖊️ Microsoft (Virtuoso) → Designed a dynamic UI framework rendering configurable screens from JSON, added SQI/RAID/review workflows, and deployed to Azure cloud-native environments. 🛒 E-commerce (Digital Juice/BusyBoxx) → Delivered Elasticsearch + Redis search/admin tools, boosting content discovery and reducing infrastructure costs. 🏥 Healthcare (MROCorp, Nagarro) → Architected HIPAA-compliant APIs, audit logging, and modernization strategies for enterprise-grade healthcare applications. 🛠 Tech Stack (Keywords) Frontend: ⚛️ React, TypeScript, MUI5, Tailwind, TanStack, Charting, Angular Backend: 🖥️ .NET 6/8, .NET Framework, C#, EF Core, Dapper, Node.js/Fastify Cloud/DevOps: ☁️ Azure App Services, AKS with Pods, Service Bus, APIM, Functions, IIS, Docker, CI/CD Databases: 🗄️ SQL Server, MongoDB, Elasticsearch, Redis Architecture: 🏗️ Clean Architecture, Microservices, Modular Monolith, Caching, Telemetry, Secure Auth Domains: ✈️ Healthcare, Airlines, Construction, Lighting/IoT, E-commerce, Media 💼 Why Work With Me? ✔️ 11+ years delivering enterprise-grade solutions across industries ✔️ Proven expertise in legacy → modern migration (.NET Framework → .NET 8, Angular/ASP.NET → React/Angular latest) ✔️ Cloud-native delivery across Azure App Services, AKS, IIS, and Docker ✔️ Strong foundation in architecture, scalability, security, and compliance ✔️ Endorsed with LinkedIn recommendations highlighting technical excellence & leadership 📞 Let’s Connect If you’re looking for a full-stack partner who can modernize legacy systems, build new cloud-native applications, and deliver with AI-enhanced speed and precision, let’s talk. I’ll propose a clear, phased plan tailored to your project and business goals. Best Regards, Nitin R

Technical Profile Change Data Capture C Python SQL Linux Oracle MySQL PostgreSQL Microsoft SQL Server Kafka Apache HBase JIRA GitHub Geographical Data

Hi there! 👋 I’m a passionate Full-Stack Developer with over 5 years of experience in web development and a proud member of the DevIT team—one of the Top-Rated agencies on Upwork! 🌟 I love turning ideas into amazing digital experiences and collaborating with clients to bring their visions to life. A Little About Me: 💻 Full-Stack Pro 🚀 E-Commerce Wizard 🔗 API Guru 📊 Database Nerd 🤝 Team Player Why Work With Me? I bring a mix of technical expertise, creative problem-solving, and a friendly attitude to every project. I genuinely care about my clients’ success and go the extra mile to ensure everything is just right. Whether it’s a big idea or a tiny tweak, I’m here to help! Let’s create something awesome together! 🚀✨ My expertise: ✅ Front-end: Redux, Redux-thunk, Axios, Axios Retry, js-queue, Lodash.js, Redux-Form, Reselect, Angular 2+, TypeScript, jQuery, Bootstrap, SASS/LESS, CSS3, HTML5, Webpack. ✅ Back-end: PHP, Laravel ✅ JavaScript: React.js, Node.js, Next.js, Vue.js, Angular.js, React Native ✅ CMS: - Shopify (Apps, custom themes, system/API integrations) - WordPress ✅ Server-side: Amazon AWS, Microsoft Azure, Google App Engine, Nginx, Docker ✅ Databases: MongoDB, PostgreSQL, MySQL, Redis, Oracle DB, HBase, Microsoft SQL Server, Sybase. ✅ DevOps: Docker, Kubernetes, Ansible, Bash, AWS (Lambda, DynamoDB, API Gateway, S3, etc.), Ansible, GitLab ✅ API - Google, Facebook, Stripe, PayPal, Different lead API, Twilio API, Cognito, AWS, REST.API, GraphQL, etc. ✅ Payment Gateways - PayPal, Google Checkout, Stripe, Adyen, Sofort, Custom payment gateways, etc. Great experience with: 🔸 Git 🔸 e-commerce; 🔸 payment systems integration (PP, Stripe, Authorize.net and similar); 🔸 Google Maps API (custom design, clusters, routing, radius, speed/time/distances calculation, etc.); 🔸 responsive CRM and dashboards, high-traffic web-projects. So, don’t hesitate to get in touch if you have any related projects 😉

I build production-grade GenAI systems, RAG chatbots, LLM integrations, and agentic workflows that ship and hold up under real use, backed by 6 years of scalable backend engineering. Recent work: a legal-intake chatbot (Gemini + ChromaDB) giving citation-grounded answers over Indian statutes without hallucinating, and a hospital-data Q&A bot with semantically-ranked retrieval. I handle the whole stack, vector search, prompt engineering, API integration, and the backend plumbing (Node.js, Python, Java, Kafka) that keeps it reliable. If you need someone who can turn an LLM prototype into something dependable in production, let's talk about what you're building.

I'm a senior full-stack developer with 7+ years of experience building and scaling web and mobile applications. With over $100K earned on Upwork, I've built a track record of delivering real, measurable results for every client I work with. My core stack spans the JavaScript/TypeScript ecosystem — React, Next.js, Node.js, Express, and NestJS — alongside Rust for performance-critical systems and Flutter for cross-platform mobile apps. I don't just write code; I improve what's already there. For past clients, I've redesigned system architectures to handle growth and optimized API response times by up to 10x. What sets me apart is that I treat every engagement like I'm part of your team, not an outsider passing through. I thrive in long-term partnerships where I can deeply understand your product, spot bottlenecks before they become problems, and push the codebase forward with confidence. Most of my clients started with a single project and kept me on because I became an asset they didn't want to lose. If you're looking for a reliable senior engineer who can own features end-to-end—from database design to pixel-perfect UI—let's talk.

►Certified AWS Data Analytics - Specialty ►Certified Databricks Spark 3.0 Developer ►Reliable on many tasks such as ► Big Data Development ( AWS, Redshift, Apache spark, Apache kafka, Hadoop, Ambari, Apache phoenix, HBase, etc. ) ►Java Web Application Development ( Spring MVC , AngularJS, Mongodb, Dynamodb, MS Sql, Amazon web services aws, ec2-instance, AJAX, JSP , ORACLE , mySql , Postgre, Jquery Etc.) ►Microservices ( Spring boot, Docker, Postgre, Akka, Scala) ►Web Development (Php, css, javascript, etc.) ►Good Communication Skills ►Knowledge on html (php,javascript, and css) ►Knowledge on java programming ►Knowledge on scala ►Web research ►Knowledge on Google Refine ►Knowledge on Googe Spreadsheets ►BigCommerce Data encoder ►Reliable internet connection