<span>Hi, I am _</span>
Full-Stack {JavaScript} Engineer -> React, Next.js & Node.js.
<p>Senior JavaScript Engineer specializing in React, Next.js, and Node.js. I help businesses and agencies turn complex ideas into fast, scalable, production-ready applications — with AI as part of the toolkit when it adds real value.</p>
and more...
Skills
My Techstacks
- Front-End:HTML, CSS, JavaScript, React, Angular
- Back-End:Node.js, Express, Python, Django
- Databases:MySQL, PostgreSQL, MongoDB
- Tools & Platforms:Git, Docker, AWS, Heroku
- Others:RESTful APIs, GraphQL
Trusted by more than 100+ companies worldwide_
“K K Singh is a rare talent who understands business logic as deeply as code. He didn't just build our platform; he architected a scalable engine that supported our 10x growth phase.”
I am not just a coder; I am a technical partner_
I specialize in the complete MERN stack (MongoDB, Express, React, Node.js) and Next.js. Over the last 7 years, I have architected solutions for over 100 businesses—ranging from dynamic startups to enterprise-scale SaaS applications. My focus is on writing clean, maintainable code that drives actual business growth.
Services
Designing solutions customized to meet your requirements
Custom Web Applications
I engineer pixel-perfect, scalable web apps using React abd Next.js. I focus on performance, SEO, and maintainability, ensuring your product is built to handle growth from day one.
AI & Agentic Workflows
Future-proof your software. I integrate LLMs (OpenAI/Anthropic) to build intelligent chatbots, automated workflows, and smart agents that reduce manual tasks and enhance user experience.
Scalable Backend Systems
The backbone of your business. I architect secure Node.js APIs (REST & GraphQL) and manage databases like MongoDB/PostgreSQL to ensure your data is fast, safe, and always available.
Performance Engineering
Speed is a feature. I audit and refactor legacy code to improve Core Web Vitals, reduce server costs, and ensure your application creates no friction for your users.
E-Commerce Solutions
Turn visitors into buyers. Whether it's a headless Shopify build or a custom MERN stack store, I create seamless shopping experiences optimized for high conversion rates.
SaaS Product Development
From idea to MVP to IPO. I help startups architect their full technical stack, choosing the right tools to launch fast without accumulating technical debt.
Projects
My Recent Works
Fi-Money: Fintech Solution
Architected a high-performance banking dashboard with a focus on clean modular architecture and complex financial data visualization.
Project Info
SaaS Analytics Dashboard
Architected a high-performance analytics dashboard using React and Next.js, focusing on real-time data visualization and scalability for enterprise-level clients.
Project Info
AI Automation Platform
Integrated OpenAI and custom LLM workflows into an enterprise platform to automate complex business processes and data analysis for global teams.
Project Info
Ready to scale your business?
I am currently accepting high-impact projects. Let's discuss your technical architecture.
Phone Number
+91-9798000050
hi@kksingh.com
kksingh.dev
Address
Deoghar - India