Harsh Profile

Harsh Kumar

Full-Stack Developer | Sponsored OSS Maintainer at Epicenter (YC S25)

About Me - README.md

👋 Hey There!

I'm a Full-Stack Developer with 2+ years of experience building scalable web applications using React, Next.js, and Node.js. Currently sponsored open source maintainer at Epicenter (YC S25), where I implement full-stack features, fix critical issues, and review community contributions for a growing global user base.

🔭 Currently Working On

  • Maintaining YC-backed productivity platform as sponsored GitHub maintainer
  • Building AI-powered landing page generator with 12-phase UX methodology
  • Implementing full-stack features and collaborating on product roadmap decisions
  • Developing secure authentication systems and optimizing WebRTC performance

⚡ What I Do

  • Built complete authentication systems with secure login/registration flows using Firebase
  • Enhanced WebRTC video call performance, improving connection stability by 30%
  • Developed conversational AI platform integrating OpenAI, D-ID, and ElevenLabs APIs
  • Created internal dashboard applications for operations, admin, and client teams
  • Reviewed 350+ web application submissions as Frontend Mentor technical mentor

🛠️ Tech Stack

JavaScriptTypeScriptPythonC++React.jsNext.jsNode.jsExpress.jsMongoDBFirebaseHTML5CSS3Tailwind CSSOpenAI APIClaude APIGemini APIWebRTCJWT/OAuthStripeRESTful APIsGitGitHubVS CodeChrome DevToolsWebpackVite

⏳ Experience Timeline

A detailed timeline of my professional journey with 2+ years of experience, highlighting key roles and contributions in full-stack development, AI integrations, and open source maintenance.

Open Source Maintainer (Sponsored)

Epicenter (YC S25)

Aug 2025 - Present · Remote

Maintain and improve YC-backed productivity platform as sponsored GitHub maintainer. Implement full-stack features, fix critical issues, and review community contributions. Collaborate with core team on product roadmap and technical architecture decisions.

Full-Stack DevelopmentCode ReviewOpen SourceProduct Development

Software Engineer

Userology

Aug 2024 - Jan 2025 · Remote

Built complete authentication system with secure login/registration flows using Firebase and Next.js. Optimized WebRTC video call performance, improving connection stability and quality by 30%. Developed responsive web applications using React, TypeScript, and modern development practices. Collaborated with cross-functional teams in Agile environment.

Next.jsFirebaseTailwind CSSWebRTCAuthentication Systems

Freelance Full-Stack Developer

Self-employed

Mar 2024 - Oct 2024 · Remote

Architected and developed complete conversational AI platform with real-time chat capabilities. Integrated multiple AI services (OpenAI, D-ID, ElevenLabs) into cohesive full-stack solution. Built end-to-end application with React frontend, Node.js backend, and MongoDB database. Implemented secure payment processing (Stripe) and complete user authentication system.

Node.jsMongoDBReact.jsREST APIsStripe Payment Integration

Software Developer

VaySolar

Nov 2023 - May 2024 · New Delhi, India

Built complete internal dashboard applications for operations, admin, and client teams using React. Integrated Swagger-documented REST APIs with optimized loading states, reducing perceived wait times. Developed data visualization interfaces and workflow management tools for internal teams. Collaborated directly with product leads in design reviews and technical planning sessions.

React.jsREST APIsDashboard DevelopmentData Visualization

Technical Mentor (Volunteer)

Frontend Mentor

Sep 2023 - Apr 2024 · Remote

Reviewed 350+ web application submissions, providing detailed technical feedback and code improvements. Mentored developers on JavaScript, React, and web development best practices. Earned multiple community recognition badges (Mentor of the Week/Month) for high-quality reviews.

Code ReviewReact.jsJavaScriptWeb DevelopmentTechnical Mentoring

Software Developer

Botter Solutions Pvt. Ltd.

Nov 2023 - Dec 2023 · Remote

Developed data visualization application for directional drilling software in Oil & Gas sector. Built complex Excel-style data management system using React and MUI Data Grid with custom calculations. Integrated REST APIs and optimized application performance for large dataset handling.

React.jsData VisualizationREST APIsData Management

🚀 Featured Projects

A hand-picked collection of projects showcasing design, frontend, and full-stack development.

AI-Powered Landing Page Generator.web
AI-Powered Landing Page Generator

Full-stack AI platform with Python CLI and Next.js web interface. Integrates Claude AI, Gemini API for automated competitor analysis, user research, and content generation. Features 13 professional themes and complete workflow from AI research to production-ready landing pages.

Python CLINext.jsOpenAI APIClaude AIGemini API
Story Generator App.web
Story Generator App

AI-powered content generation application that creates random stories based on user prompts. Built with React frontend and OpenAI API integration, exploring creative AI applications for content creation.

React.jsOpenAI APIAI Integration
Interactive Git Playground.web
Interactive Git Playground

Educational platform for Git beginners with interactive command visualization and online playground. Built with Next.js and TailwindCSS, featuring real-time Git command execution and visual feedback for learning.

Next.jsTailwindCSSInteractive Learning
Enterprise Dashboard System.web
Enterprise Dashboard System

Comprehensive admin dashboard with data visualization and management capabilities. Built for scalable enterprise use with Next.js and TailwindCSS, featuring real-time data updates and responsive design.

Next.jsTailwindCSSData Visualization

🏆 Achievements - Key Highlights

A curated showcase of my awards, recognitions, and significant milestones in my development journey.

Open Source Contributor

2023–2024

Contributed to Meshery by improving website features and fixed typos on the MUI documentation site.

Intern at DRDO

Summer 2024

Selected for a 2-month internship at DRDO, contributing to high-impact research and development tasks.

Custom Portfolio for International Student

Feb 2023

Created a responsive, visually appealing React-based portfolio for an international Ivy League applicant.

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