Scalable solutionsthat build
Building high-performance web applications using React.js, Next.js, Node.js, and MongoDB. I specialize in SSR architecture, RESTful API design, and delivering clean, user-friendly interfaces.
My Technical
Skills.
I combine modern frontend frameworks with robust backend architectures to deliver scalable full-stack applications.
Nikhil Kumar
Full-Stack MERN Developer specializing in high-performance, scalable web applications.
Why Choose Me?
I am a specialized React.js and Next.js developer with 4+ years of rigorous experience architecting scalable systems from the ground up. I do not just write code; I engineer solutions designed for scale, performance, and long-term maintainability.
- Performance First: Expertise in Next.js SSR, code-splitting, and lazy loading to drastically reduce load times.
- Robust Backends: Secure, scalable Node.js/Express APIs capable of handling massive RPS.
- Pixel-Perfect UI: Delivering flawless implementations of complex Figma designs using Tailwind and Radix.
- AI Integrations: Enhancing applications with LLMs, OpenAI API, and intelligent AI-driven workflows.
- Best Practices: Clean architecture, Redux/Zustand state management, and strict WCAG compliance.
Complex Problems Solved
Lead Frontend Developer (Remote Contract)
- • The Challenge: A platform suffering from severe UI lag and poor cross-device rendering.
- • The Solution: Re-architected the frontend using Next.js, Tailwind CSS, and Radix UI. Optimized canvas rendering logic to synchronize massive datasets between admin and client portals without blocking the main thread.
- • The Impact: Reduced UI lag by ~35% and improved overall load times by 30%.
Full-Stack Consultant (Onsite)
- • The Challenge: Building a secure, multi-tenant B2B review platform requiring complex subscription logic.
- • The Solution: Built a custom React 19 architecture with deep Role-Based Access Control (RBAC). Integrated Stripe for recurring billing and implemented real-time i18n for global clients.
- • The Impact: Delivered a highly secure, scalable eCommerce backend seamlessly handling global transactions.
Software Engineer (Onsite)
- • The Challenge: A legacy system suffering from state management chaos and missing modern intelligent features.
- • The Solution: Migrated state entirely from Context API to Redux Toolkit. Built a Node.js/Express pipeline integrating Valida APIs alongside intelligent AI-based verification checks.
- • The Impact: Application bugs dropped by 30%, page load times decreased by 40%, and smart verification scaled to process 10,000+ daily checks effortlessly.
Technical Arsenal
Frontend Mastery
Backend & Database
Tools & DevOps
AI & Modern Integrations
Featured Deliverables
Enterprise Real Estate Portal
Modern Next.js architecture with optimized content delivery, significantly boosting performance metrics.
Global Identity Platform
Secure identity platform with comprehensive role-based administrative workflows for high-volume processing.
Corporate Asset Management
State management refactor focused on stability and advanced data grid implementations.
B2B Analytics & Reviews
B2B platform featuring complex authorization hierarchies, payment integration, and localization support.
Custom eCommerce Architecture
Full-stack eCommerce architecture integrating automated workflows, payments, and secure data storage.
Municipal Dashboard System
Interactive business dashboards with localized experiences and protected administrative routes.
Frontend Development
Building responsive, accessible, and high-performance user interfaces.
Backend & Databases
Designing scalable APIs, real-time services, and robust database architectures.
Tools & Infrastructure
Managing deployments, version control, and modern development workflows.
AI & Integrations
Integrating modern AI capabilities and large language models into web applications.
Engineering robust
digital solutions.
Vansh Tour and Travels
A highly optimized tour and travel website built with Next.js. Features modern UI components from Shadcn UI and Tailwind CSS, deployed on Vercel with comprehensive SEO optimization.
B2B Info
Comprehensive B2B platform built with modern React. Features extensive authorization hierarchies for diverse user types, multi-language support, and integrated payment processing.
Budget Tracker
A comprehensive personal finance management application built with Flutter. Features intuitive expense tracking, budget planning, and detailed financial analytics.
IPTV Player
An ad-free IPTV player application built with Java for Android. Delivers seamless streaming of live television channels with a user-friendly interface.
Let's build
together.
Have a project in mind or want to explore potential opportunities? I'm currently open for new roles and exciting projects. Drop me a message and let's talk.