Hi, I'm Bhavsagar 👋
🔥 Frontend / Product Engineer | React • React Native • TypeScript • Next.js • PWA
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About

I’m a Frontend / Product Engineer with 3+ years of experience building production-grade web and mobile applications for startups. I specialize in React, Next.js, React Native, and TypeScript, and have owned frontend and mobile development end-to-end — from architecture and UI/UX to performance optimization and production delivery.

At my current role, I’m part of the founding engineering team, where I’ve built multi-role SaaS platforms, real-time video systems, subscription flows, admin dashboards, and mobile apps used by thousands of daily users. I often work without detailed specs or designers, translating PRDs directly into scalable, user-friendly interfaces.

I care deeply about clean architecture, performance, accessibility, and building products that real users rely on.

Work Experience

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Prospello Technologies

March 2025 - Present
Frontend Developer
Bangalore, Karnataka
Core member of the founding engineering team, owning frontend and mobile development end-to-end for multiple production-grade SaaS and LMS platforms. Built large-scale, multi-role systems (students, teachers, parents, admins, clients) including real-time virtual classrooms, subscriptions, scheduling, dashboards, and role-based access control. Implemented live video workflows using LiveKit and Zoom Video SDK, and developed cross-platform mobile apps with React Native (Expo → Native CLI) including push notifications and native integrations. Led frontend architecture, performance optimization, and PWA conversion for offline-first and mobile-first experiences. Independently handled UI/UX design and design systems in the absence of a designer, ensuring accessibility and consistency. Collaborated closely with backend teams on Node.js and MongoDB APIs, authentication, and system design. Platforms are actively used by thousands of students daily across institutes in India.
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UpWork

Aug 2024 - Feb 2025
Freelance MERN Developer
Remote
Collaborated with international clients to deliver end-to-end MERN stack solutions. Worked on scalable dashboards, CMS systems, and B2B tools. Used TypeScript, GraphQL, and Docker to build and ship robust, containerized web apps. Focused on client satisfaction through rapid iteration and clean, modular code.
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GeeksForGeeks

April 2024 - Aug 2024
Fullstack MERN Developer
Noida, Uttar Pradesh
Developed a full-stack e-commerce application using React.js, Redux, Node.js, Express.js, and MongoDB. Built key features including user authentication, product management, and a fully functional shopping cart. Used Formik and Yup for robust form handling and validation, improving overall user experience and input reliability. Collaborated with team members to design and integrate responsive UI components and connect frontend with backend REST APIs. Participated in team meetings, sprint planning, and collaborative coding sessions, gaining hands-on experience in agile workflows, peer reviews, and effective team communication.
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Allen Digital

July 2021 - Sept 2022
Frontend Developer (React.js)
Kota, Rajasthan
Built and maintained responsive, component-based interfaces with React.js and modern JavaScript (ES6+). Integrated RESTful APIs to deliver real-time data and seamless user experiences. Implemented user authentication and authorization workflows in the frontend, ensuring secure access control. Optimized application performance through code splitting, lazy loading, and efficient state management using Redux and RTK Query. Collaborated closely with designers to deliver pixel-perfect, accessible, and cross-browser compatible UI. Managed version control with Git, supporting smooth team collaboration and consistent code quality.
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Speedwell IT Solutions

June 2020 - June 2021
Frontend Web Developer
Noida, Uttar Pradesh
Translated PSD and Figma designs into fully responsive, pixel-perfect websites with cross-browser compatibility. Collaborated with UI/UX designers and developers to implement features that enhanced usability and performance. Interfaced directly with clients and coordinated with internal teams to ensure timely delivery of project requirements. Used Git for version control, maintaining clean code practices and enabling smooth team collaboration

Education

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Udemy

2026 - Present
AI Engineer Agentic Track: The Complete Agent & MCP Course
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Buildspace

2024 - Present
AI Agent Development (s3, s4, sf1, s5)
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GeeksForGeeks

2024 - 2024
Full-Stack Web Development (MERN Stack)
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Udemy

2023 - 2024
The Ultimate React Course, Complete JavaScript Course
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Bharati Vidyapeeth Deemed University

2010 - 2013
Bachelor of Computer Applications (B.C.A)

Skills

React
Next.js
React Native
Expo
TypeScript
JavaScript (ES6+)
Redux Toolkit
RTK Query
TanStack Query
Tailwind CSS
HTML5
CSS3
Responsive Design
Mobile-First Design
Accessibility (WCAG)
Design Systems
Component Architecture
Figma
Framer Motion
GSAP
Radix UI
shadcn/ui
Material UI
Node.js
Express
MongoDB
Mongoose
REST APIs
GraphQL
Razorpay
Stripe
LiveKit SDK
Zoom Video SDK
WebSockets
Push Notifications
PWA
Performance Optimization (LCP, CLS, INP)
Code Splitting
Lazy Loading
Memoization
API Caching
Docker
Git
Vercel
AWS
My Projects

Check out my latest work

I've worked on a variety of projects, from simple websites to complex web applications. Here are a few of my favorites.

Learning Management System (LMS)

Full ownership side project: complete frontend architecture, UI/UX design, backend APIs, authentication, role-based access control, and data modeling using React and Node.js.

React
TypeScript
Vite
Redux Toolkit
React Router
Tailwind CSS
Radix UI
Framer Motion
GSAP
Node.js
Express
MongoDB
Mongoose
JWT Authentication
bcrypt
REST APIs
Axios
Website
Source

Digital Marketing Webiste

Built a responsive digital marketing website using React, featuring smooth navigation, dynamic components, and modern UI with TailwindCSS and Daisy UI

React
React Router
Daisy UI
TailwindCSS
JavaScript
Shadcn UI
Magic UI
Lazy Loading
Website
Source

Admin Dashboard

Built a fully responsive admin dashboard, featuring a clean and modern user interface. The dashboard includes intuitive navigation, interactive data tables, customizable widgets, and detailed analytics displays to streamline data management and enhance user experience.

Typescript
HTML
TailwindCSS
Responsive Design
Data Management
Website
Source
Workflow Builder with ReactFlow

Workflow Builder with ReactFlow

Built a pipeline builder using ReactFlow, Python, and FastAPI to help users design and visualize workflows. It features dynamic text nodes with variable support, real-time DAG validation, and a polished, user-friendly interface.

React
React Flow
Python
FastAPI
TailwindCSS
Real-Time Feedback
DAG Validation
Dynamic Node Interactions
Source

Full-Stack E-Commerce Platform

Developed a feature-rich E-commerce platform using the MERN stack. The platform offers seamless product browsing, user authentication, secure payment integration, and real-time search functionality. Ensuring a responsive and optimized user experience across all devices.

React.js
Node.js
Express.js
MongoDB
Redux Toolkit
JWT Authentication
TailwindCSS
Context API
Mongoose
Daisy UI
Lazy Loading
Website
Source
Contact

Get in Touch

Want to chat? Just shoot me a dm with a direct question on twitter and I'll respond whenever I can. I will ignore all soliciting.

LinkedIn
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