Hire the Best Ext JS Specialists in Bengaluru, IN

Hi, I am Sai Harsha Vardhan, SDE at Juspay. I have graduated BTech in Computer Science from Vellore Institute of Technology. I have good knowledge of both traditional and modern programming languages like C, Java and Python. I am very interested in developing full-stack web applications. I am passionate about web development. I have good experience with both frontend and backend development. As I have also worked at three startups in the web domain, I have good knowledge of developing websites. The main strengths of mine 1. Designing responsive webpages using Bootstrap and CSS. 2. Using the JQuery framework and Ajax. 3. Creating a backend service using Nodejs or PHP. 4. Writing clean, reusable, and robust code. 5. Web Scraping / Automation using Puppeteer (NoseJS).

FOUNDING ENGINEER AND TECHNOLOGY LEAD I currently work as a Founding Engineer, operating across engineering, architecture, DevOps, product alignment, QA coordination and delivery ownership. I wear multiple hats and work closely with leadership and product teams, ensuring whatever we build is scalable, secure, reliable and meaningful for the business. I am hands-on when needed, but I also take responsibility for system design, direction and outcomes. DOMAINS AND PRODUCT EXPOSURE I have worked across SaaS platforms, fintech products, ecommerce ecosystems and enterprise-grade internal tools. This has helped me understand compliance, security, performance, business workflows, user expectations and product value beyond just writing code. ENGINEERING AND DEVELOPMENT EXPERIENCE I have deep experience with JavaScript and TypeScript based applications. I have worked extensively with React and Angular on the frontend, and Node.js, NestJS and Express on the backend. I have experience working with PostgreSQL using Prisma as well as MongoDB. I have designed and worked on scalable systems, microservices architectures and event-driven platforms. My focus is always on clarity, maintainability, performance and long-term stability. AWS, DEVOPS AND PLATFORM OWNERSHIP Along with engineering, I actively take care of DevOps and cloud responsibilities. I have strong experience working with AWS services including S3, Lambda, Cognito, EventBridge, Kinesis, SQS, SNS and Redis/Valkey. I understand deployment strategies, environments, production reliability, scalability considerations, operational continuity and cost awareness. The goal is not just to launch systems, but to ensure they run safely and efficiently in real-world usage. SECURITY, QUALITY AND RELIABILITY Security and quality are high priorities in my work. I have experience implementing secure authentication, authorization and platform protection practices. I work closely with QA functions to ensure stable releases and trusted user experiences. LEADERSHIP AND EXECUTION RESPONSIBILITY I have experience working as a Tech Lead and team enabler, guiding developers, aligning decisions, coordinating delivery and communicating clearly with stakeholders. I care about accountability, practicality and building systems that actually work at scale rather than temporary solutions. AI AND FORWARD LOOKING ENGINEERING I am actively exploring AI and ML opportunities, understanding realistic use cases and how intelligent capabilities can enhance SaaS platforms and modern applications. WHAT I BRING A strong combination of hands-on engineering, leadership maturity, product awareness, strategic thinking, DevOps experience and real ownership of outcomes. I focus on building things that are robust, secure, scalable and genuinely useful in real product environments.

🏆 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 💼 𝟱+ 𝘆𝗲𝗮𝗿𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 | ⏳ 𝗦𝗮𝘃𝗲 𝘁𝗶𝗺𝗲 𝘄𝗶𝘁𝗵 𝗔𝗜 𝗳𝗶𝗿𝘀𝘁 𝗮𝗽𝗽𝗿𝗼𝗮𝗰𝗵 𝑆𝑡𝑟𝑢𝑔𝑔𝑙𝑖𝑛𝑔 𝑤𝑖𝑡ℎ 𝑐𝑜𝑚𝑝𝑙𝑒𝑥 𝑤𝑒𝑏 𝑑𝑒𝑣𝑒𝑙𝑜𝑝𝑚𝑒𝑛𝑡 𝑜𝑟 𝐴𝐼 𝑎𝑢𝑡𝑜𝑚𝑎𝑡𝑖𝑜𝑛 𝑐ℎ𝑎𝑙𝑙𝑒𝑛𝑔𝑒𝑠? 𝑊𝑎𝑛𝑡 𝑎 𝑤𝑒𝑏 𝑎𝑝𝑝 𝑡ℎ𝑎𝑡 𝑠𝑐𝑎𝑙𝑒𝑠 𝑒𝑓𝑓𝑜𝑟𝑡𝑙𝑒𝑠𝑠𝑙𝑦, 𝑎𝑛 𝐴𝐼 𝑝𝑜𝑤𝑒𝑟𝑒𝑑 𝑤𝑜𝑟𝑘𝑓𝑙𝑜𝑤 𝑡𝑜 𝑟𝑢𝑛 𝑦𝑜𝑢𝑟 𝑏𝑢𝑠𝑖𝑛𝑒𝑠𝑠 𝑜𝑛 𝑎𝑢𝑡𝑜𝑝𝑖𝑙𝑜𝑡 𝑜𝑟 ℎ𝑖𝑔ℎ 𝑝𝑒𝑟𝑓𝑜𝑟𝑚𝑖𝑛𝑔 𝑐ℎ𝑟𝑜𝑚𝑒 𝑒𝑥𝑡𝑒𝑛𝑠𝑖𝑜𝑛 𝑡𝑜 𝑟𝑒𝑑𝑢𝑐𝑒 𝑔𝑟𝑢𝑛𝑡 𝑤𝑜𝑟𝑘? I specialise in React, JavaScript, TypeScript, Next.js, and AI-powered tools to deliver high-performance, scalable, and visually stunning applications and performant solutions for your business. With over 5+ years of experience building for startups, SaaS platforms, and Chrome extensions, I help businesses automate workflows, enhance productivity, and scale their digital presence. 💡 𝐌𝐲 𝐞𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 🖥 Web Development ✅ Frontend: React.js, Next.js, Gatsby, TypeScript, Redux, TailwindCSS ✅ Performance Optimization: Fast-loading, SEO-friendly, and accessible web apps ✅ AI-Powered Development: Integration with Bolt.new, Lovable.dev, v0.dev, Cursor AI 🛠️ Chrome Extension Development ✅ Custom Chrome Extensions: Productivity tools, automation, scraping, and browser enhancements ✅ API Integration: OpenAI, GPT-based chatbots, WebSocket, and real-time data ✅ Security & Compliance: Optimized, privacy-focused, and seamless Chrome extensions 🌍 Backend & DevOps ✅ Server-side Development: Node.js, Express.js, Firebase Functions ✅ Database Management: Firestore, PostgreSQL, MongoDB ✅ CI/CD Pipelines & Deployment: Docker, Vercel, Netlify 📌 𝐍𝐨𝐭𝐚𝐛𝐥𝐞 𝐏𝐚𝐬𝐭 𝐖𝐨𝐫𝐤 🔹 Scaled an AI tools directory from 0 to 150K+ users – Built a high-traffic platform that connected users to top AI solutions. 🔹 Developed key features for Unifize’s web & mobile platform – Worked on dashboards, authentication, checklists, chat interfaces, and optimized offline search. 🔹 Integrated SAML & SAP authentication in React Native – Secured login experiences across web & mobile. 🔹 Built an accessible early-learning web app – Helping students of all abilities develop math & literacy skills. 🔥 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? ✔️ Full-Stack Flexibility: From frontend design to backend development and AI-powered automation. ✔️ AI-Driven Productivity: Leverage AI tools like Bolt.new, v0.dev, and Cursor for faster, smarter development. ✔️ Scalable & Maintainable Code: Performance-first, future-proof solutions that any team can start working in a breeze and fully documented architecture for easy development ✔️ Save Time: Save hours of manual grunt work effort by a custom build chrome extension. 🚀 𝐋𝐞𝐭’𝐬 𝐁𝐮𝐢𝐥𝐝 𝐒𝐨𝐦𝐞𝐭𝐡𝐢𝐧𝐠 𝐀𝐦𝐚𝐳𝐢𝐧𝐠! Looking for a fast, reliable, and AI-savvy developer to bring your idea to life? Click the Invite button, and let’s discuss how I can help your business scale with cutting-edge web solutions.

🚀 With a robust 6-year background as a Web and Mobile Applications Developer, I bring a wealth of experience in key technologies such as JavaScript, TypeScript, Vue.js, React.js, Node.js, Nest.js, and API development. My expertise spans both frontend and backend realms within the dynamic JavaScript ecosystem, making me well-versed in delivering top-notch solutions. 💼 Over the course of my career, I've successfully completed 177 projects for 79 clients globally, reaching audiences in India, USA, Canada, UAE, Australia, and England. This extensive portfolio underscores my commitment to delivering high-quality work and my ability to cater to diverse client needs. My track record attests to my proficiency and dedication in crafting successful web and mobile applications. Frontend Development: 🛠️ Proficient in JavaScript and TypeScript. 🚀 Expert in modern frameworks: Vue.js, React, Nuxt.js, Next.js, and RxJs. 🎨 Skilled in UI libraries and styling: Ionic, Pinia, Redux, Webpack, HTML, CSS, SAAS, and Tailwind CSS. Backend Development: 💻 Advanced skills in Node.js, Nest.js, Express.js, and Microservices architecture. Web3 and Blockchain: 🌐 Proficient in Blockchain technologies including Ethereum and Solana. Deployment & Cloud: 🐳 Docker ☁️ Amazon Web Services (AWS) 🚀 Heroku 🔥 Firebase Version Control: 🐙 GitHub 🦜 Bitbucket My Transition at a Glance: ✅ Completed 177 projects ✅ Served 79 clients worldwide ✅ Over 5 years of hands-on experience ✅ Global clientele: India, USA, Canada, UAE, Australia, England Operating on These Five Principles: ✅ No false assurances. ✅ Results aligned with commitments. ✅ 24/7 assistance. ✅ Client's orders are never disregarded. ✅ Timely delivery guaranteed. I am excited about the opportunity to contribute my expertise to challenging projects and collaborate with teams dedicated to achieving excellence. Thank you Tushar P.