Gunjan Kumar Tunga

MERN Stack Developer with 4 years of experience building enterprise-scale web applications for Publicis Groupe's global operations. Specialises in Azure AD authentication, Redux Toolkit state management, and performance-optimised React/Next.js architectures, with strong backend expertise in Node.js and Express.js for building scalable REST APIs and server-side solutions. Proven track record of delivering live, production-grade platforms used by hundreds of enterprise users across finance and contractor management domains.

Passionate about clean, reusable, and accessible code aligned with business goals.

Frontend Developer at Amiga Informatics Pvt Ltd (2024-06 – 2026-01)

Associate L2 - Led frontend development of LForm, an enterprise lease management platform serving Publicis Groupe's global teams

• Led frontend development of LForm, an enterprise lease management platform serving Publicis Groupe's global teams, reducing form processing time by 40% through optimised React workflows and Redux Toolkit state management.
• Built scalable UI architecture using React.js, React Hooks, Redux Toolkit, and Next.js — supporting 5+ user roles across 200+ enterprise users.
• Implemented multi-role access control (RBAC) with Azure AD authentication, ensuring secure, role-specific user experiences.
• Integrated REST APIs and SharePoint services for real-time document management in enterprise applications.
• Improved application performance via code splitting, lazy loading, memoization, and Webpack bundle optimisation.
• Established component-based architecture and reusable UI libraries, cutting new feature development time by ~30%.

MERN Stack Developer at Okoders Technologies (2023-04 – 2024-02)

Software Engineer - Redesigned and rebuilt legacy applications using the MERN stack

• Redesigned and rebuilt legacy applications using the MERN stack (MongoDB, Express.js, React.js, Node.js) and TypeScript, improving maintainability and load speed.
• Built a reusable component library with Material UI and Styled Components — reducing UI code duplication across 3 products.
• Built RESTful APIs using Node.js and Express.js to support dynamic frontend features, enabling seamless full-stack integration across startup products.
• Enhanced accessibility (WCAG standards) and cross-browser compatibility across all applications.
• Collaborated with design teams using Figma for pixel-accurate implementation of UI/UX designs.

MERN Stack Developer at LectureNotes Technologies (2021-10 – 2023-03)

Software Engineer - Developed real-time interactive UI modules and supporting Node.js/Express.js backend services

• Developed real-time interactive UI modules and supporting Node.js/Express.js backend services for live lectures and student forums serving 50,000+ active users.
• Implemented multilingual UI with dynamic language switching, expanding platform accessibility across 5+ regional languages.
• Designed modular assessment UI supporting multiple question formats (MCQ, fill-in-the-blank, descriptive).
• Built and integrated full-stack features using MongoDB for data storage, Express.js for API development, and React for frontend rendering across the platform.
• Implemented CI/CD pipelines (GitHub Actions) to automate build and deployment workflows.

Bachelor of Computer Applications in Computer Applications – Utkal University, Odisha (2018 – 2021)