Venu Gopal - Full Stack Developer
Hello,
I'm Venu Gopal
Mobile Engineer
About Me
Venu Gopal

I’m a Mobile Engineer focused on building reliable real-world applications using React Native and Kotlin. During my internship at Zapygo Energy, I worked on production mobile apps for a fuel delivery platform, handling offline-first workflows, BLE-based fuel dispensing, real-time order systems, and payment integrations. I specialize in solving problems where systems must work in low-network and hardware-constrained environments, not just ideal conditions. Currently, I’m building SmartFuel Tracker an offline-first fuel delivery system designed to work even without network connectivity, with a strong focus on sync reliability, data consistency, and real-world usability.

Professional Experience

Software Engineering Intern

Zapygo Energy Pvt. Ltd.

Dec 2025 – Mar 2026 | Bengaluru (Remote)

  • 🔹 Owned end-to-end development of 3 mobile apps (Driver – Kotlin, Customer & Admin – React Native) for a real-time fuel delivery system and shipped to play store.
  • 🔹 Built core features: order lifecycle, BLE-based fuel validation (50m + OTP), geo-zoning (Haversine), payments (HDFC), and live tracking.
  • 🔹 Designed offline-first architecture (SQLite/Room + sync) to ensure reliable operations in low-connectivity environments.
Tech Stack: React Native Kotlin Node.js TypeScript PostgreSQL SQLite BLE Firebase HDFC Payment Gateway

📹 Work Demonstrations

Mobile Apps Demo Payment Integration BLE Hardware Demo

Screen recordings from development/testing environment. Code remains confidential per agreement.

Case Study: Fuel Logistics Platform (Zapygo)

Built and shipped a real-time fuel logistics platform with 3 apps (Customer, Driver, Admin) handling secure doorstep fuel delivery. The system required solving real-world challenges like low network environments, fuel theft prevention, and multi-role coordination.

Implemented BLE-based fuel validation (50m + OTP), geo-based service zoning, and a full order lifecycle from request to delivery. Designed offline-first architecture using SQLite/Room with sync logic to ensure uninterrupted operations in remote areas.

Worked on a shared database system with separate backend services to maintain stability and reduce coupling. Integrated HDFC SmartGateway payments and enabled real-time tracking for operational transparency.

Outcome: Production-grade system supporting real-world delivery workflows with secure dispensing, offline reliability, and multi-app coordination.

My Skillset

Frontend & Mobile

Web and mobile application development

React Native
Android (Kotlin)
React.js
TypeScript
JavaScript
Tailwind CSS
HTML/CSS

Backend & APIs

Server-side development and API design

Node.js
Express.js
Python
Flask
FastAPI
REST APIs
PostgreSQL
MongoDB
SQLite/Room

Integrations & Hardware

Payment systems and hardware communication

HDFC SmartGateway
Bluetooth Low Energy (BLE)
Firebase
JWT Authentication

Tools & Deployment

Testing, design, and deployment workflows

Figma
Postman
Regression Testing
Git / GitHub
Expo EAS
Railway
Vercel
Google Cloud Console
My Projects
SmartFuel Tracker
SmartFuel Tracker
Offline-first BLE fuel delivery system with sync engine, payments, and real-world driver workflow.
Live GitHub
Case Study

Designed offline-first architecture using SQLite WAL queue, UUID idempotent sync, and HMAC-secured payments. Built BLE hybrid scan system with fallback and heartbeat-based sync validation for real-world reliability.

AI Resume Scanner
AI Resume Scanner

Smart resume screening app using Python, Streamlit, and NLP. Compares resumes with job descriptions and generates match scores, reducing screening time by 25%.

Tech: Python, Streamlit, NLP, Machine Learning

Live Demo GitHub
Chat Application
Chat Application

Real-time browser chat app with WebSocket support and random avatar generation for up to 20 concurrent users. Flask-Socket.IO backend handles sessions and broadcasting.

Tech: Flask, Socket.IO, JavaScript, WebSockets

Live Demo GitHub
Admin Dashboard
Admin Dashboard

Responsive admin panel with interactive charts, data tables, and smooth animations. Built with React and Vite for fast development and optimized deployment.

Tech: React, Tailwind CSS, Recharts, Framer Motion, Vite

Live Demo GitHub
Gemini Clone
Gemini Clone

Recreated the Gemini AI interface with clean UI and full responsiveness. Built reusable React components optimized for both desktop and mobile screens.

Tech: React.js, Tailwind CSS

Live Demo GitHub
View All Projects on GitHub →
Contact Me

Interested in working together? Let's connect!