I'm Raj kumar

HaiVE is an AI-first SaaS company focused on research and developing innovative AI-driven products. I was responsible for end-to-end UI development across web, mobile, and desktop platforms using React as the core technology. Contributed to 15+ projects from scratch, out of which two evolved into major products: Speakup and Nidum.AI.

Speakup is an AI Agent Studio platform that automates B2B customer interactions using AI-driven voice and chat assistants - positioned as a direct competitor to vapi.ai and bland.ai. It offers customizable AI workflows, multi-channel communication (voice and chat), and supporting features such as inbound/outbound phone call with/by agents.

• Architected full-stack solution with Next.js SSR and TanStack React Query for optimized data hydration.
• Built Hono.js backend handling user management via Google OAuth and traditional credential authentication and data collection from bot.
• Integrated third-party platforms like Zendesk and Zoho Cliq via webhooks to enable seamless communication between AI agents and external systems.
• Led the development and maintenance of the frontend, backend services, and chatbot functionality, ensuring a scalable and reliable experience across use cases.
• Developed embeddable bot widget using Vite + React for deployment on client business websites, with centralized customization dashboard enabling users to configure chatbot behavior and interface styling.

Technologies used:Next.jsHono.jsTailwind CSSZustandReact QueryMongoDb - MongooseShadcn UIArctic

Nidum.AI is transforming the AI landscape by building a decentralized ecosystem that allows anyone to contribute computing power and earn rewards. Currently being acquired by BitsCrunch, a leading AI + Blockchain company in the crypto space.

• Spearheaded the UI development from the ground up, enabling users to access and interact with multiple AI models from providers like OpenAI, Claude, Groq, and others - all under one platform.
• Delivered cross-platform applications: web (React), mobile (React Native + Expo), and desktop (Electron), ensuring consistent user experience.
• Designed and implemented a high-performance, scalable ChatGPT-like UI/UX tailored for real-time AI interactions.
• Demonstrated problem-solving excellence by resolving complex real-time streaming issues across multiple AI providers and multiple chat windows.
• Proactively identified potential issues before they became critical, showcasing strong analytical thinking and preventive problem-solving skills.
• Website features: Chat with AI models, image uploads, and voice activity detection (VAD) support.
• Mobile app features: Chat with AI models, use local AI models, and upload images.
• Desktop app features: All web features, plus local model loading, document-based chat, and the ability for users to share their computation power by exposing models for use by others.

Technologies used:ReactReact-router-domReact Native + ExpoElectron.jsTailwind CSSZustandReact QueryMarkdown parsersExpress.js

Datalligence is an OKR and performance management platform built to drive team alignment, boost productivity, and accelerate execution within organizations.

• Revamped OKR module UI with a sleek design, enhancing both user and developer experience.
• Overhauled UI logics for a more intuitive and seamless interface using Ant Design systems with Tailwind CSS.
• Accelerated development speed by incorporating Tailwind CSS, React Query, and Zustand.
• Resolved critical frontend and backend issues, ensuring platform stability and performance
• Upgraded deprecated libraries, ensuring code integrity and future proofing.
• Demonstrated adaptability by quickly mastering new technologies (TypeORM with PostgreSQL) and integrating them into existing workflows.
• Mentored junior developers on React best practices, code review standards, and modern development workflows, fostering team growth and code quality.

Technologies used:ReactReact-router-domTailwind CSSReact QueryZustandTypeORMPostgreSQLAnt Design

Redink is a leading LMS platform for K-12 schools.

• Developed Redink Classroom v2, demonstrating expertise in building modern, user-centric web applications with React and Tailwind CSS.
• Demonstrated continuous improvement by addressing critical bugs and introducing new features, resulting in 78 pull requests.
• Implemented optimization strategies by reducing library dependencies, achieving a 30% reduction in overall site load time.
• Collaborated with founders and clients, contributing to a dynamic and innovative work environment.
• Managed various client projects, highlighting my expertise in delivering tailored solutions.
• Excelled as a solo developer, taking full ownership and delivering high-quality results independently.
• Built strong client relationships through clear communication, actively gathering requirements and providing regular project updates to ensure alignment.
• Notable Works:
  1. Redink Classroom website - built in Next.js. Website
  2. Upfunda website (previously YouthInYou) - built in Next.js. Website
  3. Truseve website (home, /microsoft, /hardware pages) - built in Next.js. Website
  4. Skillaura platform (Admin and Student roles) - built in React.js with Firebase authentication. Website

Technologies used:ReactNext.jsTailwind CSSHeadless UIFloating UI

Teknuance Info Solutions is a product and research-driven organization delivering innovative solutions to complex challenges across industries. Worked on Sabhae products which is an all-in-one collaboration tool for online meetings and team communication and collabration - positioned as a direct competitor to Microsoft's Teams products.

• Designed and developed Sabhae Bot, which processed, analyzed and rendered complex data dynamically into simple UI components.
• Collaborated with NLP and Machine Learning teams to plan and design the bot workflow.
• Built extensive test coverage for all new features and optimized several aspects of bot development using React and Sass.
• Created a custom CSS library in Sass for the UI team, improving workflow efficiency by 50-60%.
• Contributed to Sabhae products such as Meeting, Calendar, and Chat apps.

Technologies used:ReactSassReduxMERN StackSocket.io

• Built a simple chat application using the MERN stack with Socket.io for real-time messaging.

Technologies used:ReactBootstrapReduxMERN StackSocket.io