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Prasad Nilkanth Kulkarni
Verified Expert in Engineering
React Developer
Pune, Maharashtra, India
Toptal member since December 30, 2021
Bio
Prasad is a results-driven senior AI and front-end engineer with 10+ years of experience architecting scalable web apps. An expert in the modern React ecosystem, he excels at building AI-powered platforms using Python, Node.js, LangChain, LangGraph, and secure Web3 dApps. He maximizes development speed and quality by leveraging AI coding tools like Claude Code and Cursor AI.
Portfolio
VDX.tv
React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Shadcn...
Freelance
React, JavaScript, HTML, CSS, Web3.js, Webpack, TypeScript, Tailwind CSS, Redux...
Bregal Milestone LLP
Plugins, React, Back-end Development, Python, FastAPI, Front-end Development...
Experience
- React - 9 years
- Chrome Extensions - 6 years
- React Native - 5 years
- REST APIs - 5 years
- Next.js - 5 years
- MERN Stack - 4 years
- Node.js - 3 years
- OpenAI GPT-3 API - 3 years
Work Experience
Senior UI Developer
2023 - PRESENT
VDX.tv
- Delivered the AI content generation engine using OpenAI and OpenRouter APIs, achieving 97% positive user feedback on content quality.
- Engineered a vector-based content recommendation system with Pinecone, resulting in a 43% increase in content relevance compared to traditional keyword-only approaches.
- Implemented a secure payment gateway using Paddle, which successfully processed over $50,000 in subscription revenue within the first quarter of launch.
- Designed and deployed a user-friendly interface for VDX Studio Turbo, ensuring an intuitive experience that improved user satisfaction and engagement.
- Developed a WYSIWYG editor for seamless text editing on creatives and ads, enhancing user productivity and streamlining the content creation process.
Technologies: React, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Shadcn, Material UI, Ethers.js, Web3.js, Smart Contracts, Node.js, NestJS, RESTFul APIs, GraphQL, WebSockets, MongoDB, PostgreSQL, Supabase, IPFS, Pinecone, GitHub, GitHub Copilot Chat, Cursor AI, OpenAI API, LangChain, AI Prompts, Prompt Engineering, Git, Docker, Framer Motion, Jest, Playwright, Cypress, Figma to React, React Query, Web Development, Payment APIs, Payments, AI Agents, Claude API, Claude Code, Gemini, Gemini API, Artificial Intelligence (AI), Software Development Lifecycle (SDLC), JSON, Integration, API Development, Vibe Coding
Senior AI Front-end Developer
2016 - PRESENT
Freelance
- Contributed to projects involving the integration of Generative AI and prompt engineering into chat web applications, showcasing expertise in React, Hooks, Redux, Node.js, Webpack, Express.js, and TypeScript.
- Created a Chrome extension to monitor specific users in specific Discord chats, sending notifications via Telegram when those users start typing.
- Built an intelligent ad-blocker Chrome extension used by 1,000+ users, listed on the Chrome Web Store. This extension can bypass the AdBlocker checker scripts added by many sites, which mandate disabling AdBlocker in Chrome.
- Engineered an autonomous customer support agent using LangChain and OpenAI API, integrating vector embeddings to achieve a 40% reduction in ticket resolution time and saving 20+ hours weekly.
- Developed a custom AI-driven code generation tool using Node.js and OpenAI, parsing designs to automate UI component creation and reducing front-end development lifecycles by 35%.
- Built a retrieval-augmented generation (RAG) system using PostgreSQL and LangChain, enabling instant semantic search across 50,000+ enterprise documents and increasing team productivity by 25%.
- Engineered a custom MCP server using Node.js and TypeScript to automate front-end code generation from Figma designs, significantly reducing manual UI development time while ensuring high-fidelity implementation across multiple UI libraries.
- Architected an AI content optimization system using LangChain agents and OpenAI for vector-based matching, which increased resume relevance scores by 45% through automated analysis and improvement suggestions.
- Deployed a production-grade AI platform using Python and Next.js 15, integrating LangChain for automated document analysis and optimization, resulting in 40% faster creation and a 35% improvement in content quality.
- Optimized engineering workflows by integrating AI-powered development tools, accelerating feature deployment cycles, and ensuring consistent maintenance of code standards across multiple complex web applications.
Technologies: React, JavaScript, HTML, CSS, Web3.js, Webpack, TypeScript, Tailwind CSS, Redux, Sagas, Web Extensions, Google Chrome, Chrome Extensions, Next.js, React Redux, React Native, Node.js, GraphQL, Google Cloud, Amazon Web Services (AWS), Docker, OpenAI GPT-3 API, ChatGPT, Blockchain, Web UI, Design, Front-end Development, Mobile, Decentralized Applications, MetaMask, Front-end Architecture, Full-stack, Web3, Stripe, Mobile First, Storybook, Ethers.js, Truffle, Ganache CLI, Infura, ERC-721, Ethereum, Visual Studio Code (VS Code), Framer Motion, React Apollo, JSON REST APIs, Firebase, Data Analytics, Progressive Web Applications (PWAs), Mobile-first Design, Figma to React, React Query, AI Integration, API Integration, Role-based Access Control (RBAC), Web Development, Payment APIs, Payments, AI Agents, Claude API, Claude Code, AI Agent Orchestration, AI Architecture, Artificial Intelligence (AI), AI Prompts, Claude, Anthropic, OpenAI, OpenAI API, Open-source LLMs, Multistage LLM Chains, Large Language Models (LLMs), Cursor AI, CRM APIs, AI Automation, AI-generated Code, SaaS, AI Copilots, AI-assisted Development, Software Development Lifecycle (SDLC), Architecture, AI Enablement, AI Design, AI Programming, Agentic RAG Systems, Azure, Generative Artificial Intelligence (GenAI), JSON, Integration, FastAPI, Plugins, Security, UX Design, API Development, OAuth, Vercel, Vibe Coding
Front-end-focused Full-stack Developer
2025 - 2025
Bregal Milestone LLP
- Designed and engineered a custom Chrome extension using React and JavaScript, replacing a third-party tool and accelerating data retrieval speeds by 40%.
- Worked on secure data pipelines and RESTful APIs using Python and FastAPI to seamlessly synchronize company snapshots with the client's CRM system.
- Integrated OpenAI API capabilities into the enterprise search tool, empowering users to efficiently query both structured and unstructured datasets.
- Accelerated UI/UX design cycles by 30% utilizing Cursor AI and Claude Code to draft wireframes and deliver clean, intuitive front-end interfaces, and made use of Google Stitch.
- Streamlined deployment processes by containerizing applications with Docker and configuring robust, automated CI/CD pipelines hosted on Microsoft Azure.
- Managed end-to-end autonomous delivery of three major integration projects on strict deadlines, maintaining clear and proactive stakeholder communication.
- Implemented a secure OAuth 2.0 authentication flow using Microsoft Graph to safely connect the Chrome plugin with protected enterprise data endpoints.
- Drastically improved the existing UI of the Next.js application being used for internal purposes.
Technologies: Plugins, React, Back-end Development, Python, FastAPI, Front-end Development, User Experience (UX), UX Design, Next.js, Chrome Extensions, Security, Agentic AI, Agentic RAG Systems, AI Agent Orchestration, AI Agents, AI Architecture, Cursor AI, Claude Code, OpenAI API, REST APIs, Docker, Azure, CI/CD Pipelines, Data Pipelines, Data Privacy, Wireframing, UX Wireframes, API Integration
Front-end Developer
2019 - 2023
LogicMonitor
- Created an AI platform for generating SQL queries from a natural human language using the ChatGPT API, Next.js, Tailwind CSS, and Nest.js.
- Created a waste management company dashboard utilizing Next.js, GraphQL, React, and Tailwind CSS. It includes features like the dashboard, encompassing data analysis tools, and calculators.
- Launched a landing page for a novel cryptocurrency token exploiting Next.js, Tailwind CSS, Web3.js, React, Solidity, Hardhat, and other technologies.
- Developed an NFT marketplace utilizing Next.js, Tailwind CSS, Web3.js, React, Solidity, Hardhat, and many more technologies. Integrated features like bidding, minting, reselling, and listing.
Technologies: React, JavaScript, HTML5, CSS3, Redux, Redux-Saga, HTML, CSS, Chrome Extensions, Highcharts, jQuery, TypeScript, Front-end, User Interface (UI), Figma, Styling, Gatsby, Web3.js, MERN Stack, Google Chrome, Firefox Extensions, Web Extensions, Private NPM Modules, Webpack 4, APIs, Git, D3.js, Dashboard Development, Data Visualization, Charts, Sagas, React Redux, React Native, Next.js, GraphQL, Tailwind CSS, Material UI, Solidity, Non-fungible Tokens (NFT), Web UI, Front-end Development, Mobile, Front-end Architecture, Full-stack, Mobile First, Storybook, Jest, Ethers.js, Truffle, Ganache CLI, Infura, ERC-721, Ethereum, Visual Studio Code (VS Code), Framer Motion, JSON REST APIs, Firebase, Data Analytics, Progressive Web Applications (PWAs), Mobile-first Design, Chatbots, Figma to React, React Query, Web Development, Software Development Lifecycle (SDLC), JSON
Front-end Developer
2018 - 2019
TomTom
- Successfully migrated an existing website from Vanilla JS to a React platform, resulting in a 40% improvement in website loading speed and enhanced scalability within three months.
- Collaborated with UX designers to create visually impressive and responsive websites, ensuring seamless compatibility across mobile and desktop devices, resulting in a 20% increase in user engagement and satisfaction within six months.
- Utilized Mapbox GL and Leaflet libraries to seamlessly integrate maps and improve user experience, resulting in a 30% reduction in map loading time and enhanced map interactivity within four months.
- Developed a user-friendly correction form, similar to Google Maps, to enable users to suggest edits to existing maps, resulting in a 50% increase in user-generated map corrections and improved map accuracy within six months.
- Implemented session management using cookies and session storage, ensuring secure and efficient user authentication, resulting in a 40% reduction in unauthorized access and enhanced user privacy within three months.
- Designed and developed a cutting-edge React application for cartographers, utilizing probe data to make real-time corrections to existing maps, resulting in a 25% improvement in map accuracy and increased efficiency for cartographers within one year.
Technologies: React, JavaScript, HTML5, CSS3, Redux, Redux-Saga, HTML, CSS, Chrome Extensions, Highcharts, Front-end, User Interface (UI), Figma, Styling, REST APIs, MERN Stack, APIs, Git, Mapbox, react-map-gl, Sagas, React Redux, PostgreSQL, Web UI, Front-end Development, Full-stack, Mobile First, Storybook, Jest, PWA, Visual Studio Code (VS Code), Framer Motion, JSON REST APIs, PDF, Python, Progressive Web Applications (PWAs), Mobile-first Design, Figma to React, SQL, Web Development, Software Development Lifecycle (SDLC), JSON
Senior Front-end Developer
2017 - 2018
Persistent
- Developed Angular and React SPAs with React Router for improved user experience, seamless navigation, and protected routes. Led to 20% user engagement growth in six months.
- Transformed non-responsive websites into the mobile, tablet, and desktop-friendly designs using Sass, media queries, and Bootstrap, resulting in a 30% improvement in website accessibility and a 25% decrease in bounce rates within three months.
- Improved table components with advanced features like search, sort, and export, enhancing data processing logic. Boosted data management capabilities and efficiency in analysis and reduced processing time by 40% in six months.
- Added new UI features, such as a calendar widget for selecting date and price ranges, improving user interaction and simplifying data input processes. Achieved a 50% increase in user satisfaction and a 20% decrease in input errors within four months.
- Created state management solutions using a React Context API and Redux for multiple web applications, resulting in efficient data flow and improved scalability. This led to a 30% reduction in application crashes and enhanced performance within one year.
- Improved front-end performance of React applications by configuring webpack and implementing optimization techniques. Achieved a 35% improvement in page load times and enhanced user experience within three months.
- Implemented RESTful APIs in Node.js for consumption by front-end applications, resulting in streamlined data communication and improved data retrieval efficiency. Achieved a 25% increase in API response time within six months.
- Designed MongoDB database schemas for optimized performance and implemented intermediate-level database queries, resulting in efficient data storage and retrieval. Achieved a 30% improvement in database query performance within four months.
- Developed a data entry web application to automate the process of adding new data to MongoDB within the application's domain. This led to a 50% reduction in data entry time and improved data accuracy within six months.
Technologies: CSS, HTML, React, Redux, JavaScript, Front-end, User Interface (UI), Figma, Styling, REST APIs, MongoDB, APIs, Git, Sagas, AngularJS, Angular, Node.js, Web UI, Front-end Development, Front-end Architecture, Full-stack, Mobile First, Storybook, Jest, PWA, Express.js, Visual Studio Code (VS Code), PDF, Python, Figma to React, SQL, Web Development, Software Development Lifecycle (SDLC), JSON
Front-end Developer
2016 - 2017
Persistent
- Built single-page applications in React using React Router for navigation purposes along with protected routes.
- Converted a non-responsive website to a responsive one that will support mobile, tablets, and desktops using Sass, media queries, and Bootstrap.
- Contributed to complex data processing logic to display multi-functional table components with searching, sorting, and exporting functionalities.
- Implemented new features in UI, including a calendar widget for selecting a date range and price range.
Technologies: React, Node.js, HTML5, CSS3, JavaScript, Webpack, Material UI, Styled-components, Redux, Redux-Saga, Highcharts, NPM, Chrome Extensions, HTML, CSS, Front-end, User Interface (UI), Figma, Styling, REST APIs, MongoDB, APIs, Git, Sagas, AngularJS, Angular, Web UI, Front-end Development, Full-stack, Storybook, Jest, PWA, Express.js, Visual Studio Code (VS Code), PDF, Python, SQL, Web Development, JSON
Project History
Toptal React Accelerator
The Toptal React Accelerator is an exclusive learning program that educates JavaScript developers in React, NextJS, Redux, and GraphQL. This is a two-month program that consists of rigorous learning exercises and hands-on activities along with a stringent evaluation process, comprehensive learning assessments, and 30-40 hours of building an Invoice Management System. Within this invoicing application, users are able to track invoices, clients, and company information.
CopyCraft | The AI-powered Content Creation Revolution
CopyCraft is an innovative platform designed to streamline the content creation process for marketers and content creators. By utilizing advanced AI technology, it enables users to generate high-quality written content quickly and efficiently.
RESPONSIBILITIES:
• Developed a responsive user interface using React and TypeScript, ensuring an intuitive experience for users.
• Integrated the OpenAI API to facilitate intelligent content generation, enhancing the platform's capabilities.
• Implemented SEO optimization features that significantly improved content visibility and organic traffic.
• Created a robust analytics dashboard to provide users with insights into content performance and engagement metrics.
• Collaborated with cross-functional teams to refine features and enhance overall platform functionality.
• Ensured secure user authentication and data management through effective back-end integration.
This project showcases my ability to leverage AI technologies to enhance user experience and drive engagement in content creation.
RESPONSIBILITIES:
• Developed a responsive user interface using React and TypeScript, ensuring an intuitive experience for users.
• Integrated the OpenAI API to facilitate intelligent content generation, enhancing the platform's capabilities.
• Implemented SEO optimization features that significantly improved content visibility and organic traffic.
• Created a robust analytics dashboard to provide users with insights into content performance and engagement metrics.
• Collaborated with cross-functional teams to refine features and enhance overall platform functionality.
• Ensured secure user authentication and data management through effective back-end integration.
This project showcases my ability to leverage AI technologies to enhance user experience and drive engagement in content creation.
Prompts For All | AI Prompt Library for ChatGPT, Claude & Gemini
As a solo entrepreneur and AI Frontend Engineer, I architected, developed, and launched PromptsForAll, a comprehensive SaaS platform providing a vast collection of curated AI prompts. Owning the entire product lifecycle from ideation to production deployment, I engineered a highly responsive and SEO-optimized web application utilizing Next.js, React, and TypeScript. I designed an intuitive UI/UX with Tailwind CSS that allows users to seamlessly discover, filter, and utilize AI prompts to enhance their workflows. Beyond advanced front-end development, I architected the back-end infrastructure, integrated AI APIs, and successfully implemented monetization strategies. This platform demonstrates my ability to independently build, scale, and monetize AI-centric web applications that solve real user needs with production-ready code.
SaaS Startup Idea Generator - SaaS Ideas For All
https://saasideasforall.comI independently designed, engineered, and launched SaaS Ideas For All, an AI-driven platform empowering founders with highly validated startup concepts. Acting as a solo full-stack AI engineer and product owner, I architected a robust automated data-generation pipeline that used the Reddit API to scrape thousands of real-world community discussions. I then implemented advanced natural language processing (NLP) and AI models to filter out noise and programmatically extract high-probability SaaS business opportunities from genuine user pain points. On the front end, I built a highly performant, SEO-optimized web application utilizing Next.js, React, and TypeScript. I focused on crafting a pixel-perfect UI/UX while securely managing the database architecture and implementing end-to-end monetization workflows. This project heavily demonstrates my ability to build complex, AI-integrated SaaS products from back-end data ingestion to polished front-end interfaces.
Education
2012 - 2016
Bachelor's Degree in Computer Science
K. J. Somaiya Institute of Engineering and Information Technology - Mumbai, India
Certifications
JULY 2022 - PRESENT
Toptal React Accelerator Graduate
Toptal, LLC
Skills
Libraries/APIs
React, Redux-Saga, Highcharts, React Redux, REST APIs, React Query, Node.js, jQuery, Web3.js, Framer Motion, Claude API, API Development, D3.js, Stripe, OpenAI API, Playwright
Tools
NPM, Figma, Git, Claude Code, Webpack 4, react-map-gl, ChatGPT, MetaMask, Webpack, React Apollo, Ganache CLI, Shadcn, GitHub, AI Prompts, Claude, Seos
Languages
JavaScript, HTML, CSS, HTML5, CSS3, TypeScript, GraphQL, Solidity, Python, SQL
Frameworks
Material UI, Redux, Tailwind CSS, React Native, Next.js, AngularJS, Angular, Express.js, Jest, Truffle, NestJS, Cypress, JSON Web Tokens (JWT), LangGraph
Paradigms
UX Design, Role-based Access Control (RBAC)
Platforms
Google Chrome, Mapbox, Visual Studio Code (VS Code), Blockchain, Mobile, Vercel, Ethereum, Amazon Web Services (AWS), Docker, Firebase, LangSmith, Azure
Storage
JSON, MongoDB, PostgreSQL, Redis, Google Cloud, Data Pipelines
Other
Styled-components, Chrome Extensions, Front-end, User Interface (UI), Firefox Extensions, Web Extensions, Private NPM Modules, APIs, JSON REST APIs, Front-end Development, Front-end Architecture, Mobile First, Storybook, Progressive Web Applications (PWAs), Supabase, Figma to React, User Experience (UX), API Integration, Web Development, Artificial Intelligence (AI), AI-generated Code, AI-assisted Development, Software Development Lifecycle (SDLC), Architecture, AI Enablement, AI Design, AI Programming, Generative Artificial Intelligence (GenAI), Vibe Coding, Styling, MERN Stack, Charts, Dashboard Development, Data Visualization, Gatsby, PDF, OpenAI GPT-3 API, Web UI, Decentralized Applications, Full-stack, Web3, PWA, Mobile-first Design, Plugins, Security, Full-stack Development, AI Integration, Payment APIs, Payments, AI Agents, CRM APIs, Gemini, Gemini API, AI Automation, SaaS, Startups, Agentic AI, AI Tools, Responsive UI, AI Copilots, Agentic RAG Systems, System Design, Integration, OAuth, Sagas, Ethers.js, Infura, ERC-721, Non-fungible Tokens (NFT), Design, Data Analytics, Chatbots, Smart Contracts, RESTFul APIs, WebSockets, IPFS, Pinecone, GitHub Copilot Chat, Cursor AI, LangChain, Prompt Engineering, OpenAI, OpenAI GPT-4 API, Supabase Auth, FastAPI, AI Agent Orchestration, AI Architecture, Anthropic, Open-source LLMs, Multistage LLM Chains, Large Language Models (LLMs), Natural Language Processing (NLP), Single Sign-on (SSO), Paddle, Back-end Development, CI/CD Pipelines, Data Privacy, Wireframing, UX Wireframes
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