About Me
Atik Salim Rangnekar is a Software Engineer with experience building cross-platform mobile applications using Flutter and Dart, scalable backend services with Node.js and Express.js, and dynamic frontend interfaces using React.js. Skilled in REST API development, real-time data synchronization, JWT/OAuth authentication, microservices architecture, and production performance optimization. Proven record of reducing API latency by 85% and improving mobile app performance by 75% in high-volume production environments.
Skills & Technologies
Frontend
Mobile
Backend
Databases
State Management
AI / ML
DevOps & Cloud
GitHub Activity
Featured Projects
Job Search Orchestrator – Agentic AI
An autonomous multi-agent AI system that discovers, tailors, and tracks job applications.
Doc Mind – Intelligent Document Q&A
A RAG-powered document assistant for conversational Q&A over PDFs.
Protovec – Revamped Corporate Website
A redesigned corporate website for an industrial automation company.
Floral Garden – 3D Living Experience
An immersive 3D floral experience built with Three.js.
Dev Ratings Tracker
A full-stack platform aggregating competitive programming ratings from multiple platforms.
Ticket Hive – Real-Time Event Booking System
A real-time seat booking system with WebSocket-based updates.
Orbit Wallet
A digital wallet app for managing and tracking financial transactions.
Latest Writings
Effortlessly Elevate Your React Native App: Install React Native Paper for a Stunning UI
MediumA guide to installing and using React Native Paper to give your React Native app a polished, Material Design UI with minimal effort.
Building Your First React Native App without Expo: A Beginner's Journey to Full Control
MediumA step-by-step guide to setting up a React Native app without Expo, giving developers full control over their native build process.
Experience
Software Engineer – Full Stack & Mobile
Built a Flutter mobile application for sales teams to manage product sales, billing, and inventory with REST API integration and real-time data synchronization. Reduced API latency by 85% (10s to under 1s) by developing optimized Node.js REST APIs with efficient MySQL query design. Improved mobile app performance by 75% (24s to 6s) using lazy loading, API batching, and optimized network requests. Implemented Google OAuth and JWT-based stateless authentication. Designed an event-driven microservice using RabbitMQ for asynchronous bill processing. Built admin dashboards with audit logging, activity tracking, and automated Excel/PDF exports.
Software Developer Intern
Built a real-time seat booking system handling concurrent users via WebSocket-based updates. Developed a real-time dashboard for tracking tasks and updates. Implemented drag-and-drop Kanban-style task management. Built full-stack features using the MERN stack and integrated MySQL for structured data handling.
Software Developer Intern
Worked on full-stack development using PHP and Laravel. Built and maintained backend APIs and handled server-side logic. Developed responsive frontend components and applied basic system design concepts while building features. Collaborated on debugging and improving existing modules.
Education
Master of Computer Applications (MCA)
Focused on Full Stack Development, Advanced Algorithms, System Design, and Distributed Systems.
Let's Build Something Together
I'm currently available for freelance work and open source collaborations.