Headline

Software Engineer @ Idiosys | React.js, Node.js, Express.js, MongoDB

About

Full-Stack Software Engineer with 3+ years of experience building scalable web applications, AI-powered solutions, and real-time systems using React.js, Node.js, Express.js, and MongoDB. I develop production-grade applications for international clients, focusing on AI-driven features, RAG-based search systems, payment integrations (Stripe & PayPal), and real-time communication platforms. Passionate about solving complex problems, optimizing system performance, and building products that deliver real business value. 🛠 React.js | Node.js | Express.js | MongoDB | OpenAI APIs | Socket.io | Stripe | PayPal 📍 Kolkata, India | Open to remote and hybrid opportunities 🌐 dev.arnabbhakta.in

Location

Howrah

Work experience

Software Engineer at Idiosys: Empowering Global Innovation with Advanced Software Solutions, Sep 2025 - Jun 2026 · 10 mos, Kolkata, West Bengal, India, • Architecting and scaling full-stack applications using React.js and Node.js for high-performance production environments. • Leading the development of AI-driven features, including RAG (Retrieval-Augmented Generation) search systems that enable natural language querying over large datasets. • Managing complex backend integrations for real-time systems using Socket.io and global payment processing through Stripe and PayPal webhooks. • Implement Rate limiter and Indexing to optimize the back-end.

Associate Software Engineer at Idiosys: Empowering Global Innovation with Advanced Software Solutions, Aug 2023 - Aug 2025 · 2 yrs 1 mo, Kolkata, West Bengal, India, • Developed core modules for a UK-based healthcare platform, including real-time shift scheduling and automated timesheet management for international medical staff. • Designed an Intelligent Staff Search system using RAG, enabling natural language queries to filter and rank medical personnel across the platform. • Integrated Stripe subscription billing for dynamic user plans and automated invoicing; handled PayPal integration for global payment support. • Optimized real-time system performance with Socket.io to ensure high availability for critical healthcare workflows. • Implemented Redux Toolkit to optimize the front-end and make it more faster.

Software Trainee at Idiosys: Empowering Global Innovation with Advanced Software Solutions, Feb 2023 - Jul 2023 · 6 mos, India

Education

Bachelor's degree, Computer Science, University of Calcutta