You will get MERN | MEAN Stack Developer| NODE | React| Angular-NodeJS | Express JS|
Top Rated
Project details
Every Client has custom requirements - let's talk in Upwork Chat before ordering⭐
Are you searching for an expert Full-Stack developer to help with your website? You're at the right place. I'm a MEAN & MERN expert, in React.js, Node.js, Angular, Express.js, and MongoDB, we've designed and developed many web applications & custom websites.
I can develop secure, user-friendly web applications using industry best practices and coding standards to achieve your goals.
I offer the following development services:
• NodeJs API Development
• MEAN & MERN stack Development
• Consolidate AngularJS development with NodeJS
• Social Networking Application
• Chatbot Development In NodeJS
• NodeJS Real-Time Application
• NodeJS Maintenance and Support Services
Full Stack Developer|MEAN STACK| MERN STACK|React JS| Mongo DB| Angular| NodeJS|
Why clients are hiring me?
• Top Rated Plus since 2016
• On-time delivery at a reasonable cost
• Free Consultation
• Transparent Process
• Flexible engagement
• Quality code
• Post-development support
• 150+ FIVE STAR combine Reviews on Upwork, Google, and other portals.
Are you searching for an expert Full-Stack developer to help with your website? You're at the right place. I'm a MEAN & MERN expert, in React.js, Node.js, Angular, Express.js, and MongoDB, we've designed and developed many web applications & custom websites.
I can develop secure, user-friendly web applications using industry best practices and coding standards to achieve your goals.
I offer the following development services:
• NodeJs API Development
• MEAN & MERN stack Development
• Consolidate AngularJS development with NodeJS
• Social Networking Application
• Chatbot Development In NodeJS
• NodeJS Real-Time Application
• NodeJS Maintenance and Support Services
Full Stack Developer|MEAN STACK| MERN STACK|React JS| Mongo DB| Angular| NodeJS|
Why clients are hiring me?
• Top Rated Plus since 2016
• On-time delivery at a reasonable cost
• Free Consultation
• Transparent Process
• Flexible engagement
• Quality code
• Post-development support
• 150+ FIVE STAR combine Reviews on Upwork, Google, and other portals.
Programming Languages
HTML & CSS, JavaScript, ASP.NETCoding Expertise
PSD to HTML, Performance Optimization, DesignWhat's included
| Service Tiers |
Starter
$150
|
Standard
$400
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 2 | 4 | 8 |
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | |||
Source Code |
Frequently asked questions
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IG
Itmax G.
Sep 30, 2025
OpenAI developer & Java Spring Boot
I worked with TechAvidus on an OpenAI project, where the team did a great job. I rehired them for this project (Java Spring Boot) and am once again very happy with the results. The team delivered excellent work, and I look forward to working with them again in the future.
IG
Itmax G.
Aug 20, 2025
OpenAI developer
It was great working with TechAvidus on our Open AI project. Team did excellent work. Happy to work again in future.
PD
Paul D.
Jul 18, 2025
REACT Native Mobile App Developer – Performance-Focused & Skilled
a job well done! would hire again
GP
Gil P.
Dec 9, 2024
Update the UI of an existing web application (.Net) with a new navigation bar.
CR
Chris R.
Jun 19, 2024
Full stack web development
Highly competent full stack developers. Used them over several years. Highly recommend them.
About Keshu
Full Stack Developer|AI Integration| MCP Servers|Production AI Systems
100%
Job Success
Gandhinagar, India - 6:39 am local time
I integrate AI into software that already exists and I fix software that AI-assisted development left unfinished.
𝗠𝗼𝘀𝘁 𝗔𝗜 𝘄𝗼𝗿𝗸 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 𝘀𝘁𝗮𝗿𝘁𝘀 𝗳𝗿𝗼𝗺 𝘀𝗰𝗿𝗮𝘁𝗰𝗵. 𝗠𝗶𝗻𝗲 𝗱𝗼𝗲𝘀 𝗻𝗼𝘁.
I work inside your existing codebase, your stack, your architecture, your constraints and I add AI where it creates real operational value.
Natural language interfaces. Document intelligence. AI agents that connect to your actual business data. Workflow automation that replaces manual processes your team has lived with for years.
I also build MCP servers the integration layer that connects your existing product to AI tools like Claude and ChatGPT, and to AI agents, so your software becomes part of how your clients' teams actually work.
I also take over when AI-assisted development stalls. If your team used Cursor, Lovable, Claude Code, or Bolt to build something that is not production-ready - the logic is incomplete, the architecture does not scale, or no one can maintain it - I assess it honestly and either stabilize it or tell you exactly what it will take.
𝐀𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 𝐰𝐨𝐫𝐤 𝐈 𝐡𝐚𝐯𝐞 𝐬𝐡𝐢𝐩𝐩𝐞𝐝:
- 𝗙𝗶𝗻𝗮𝗻𝗰𝗶𝗮𝗹 𝗦𝗮𝗮𝗦: natural language to SQL over enterprise datasets, giving non-technical users direct access to data they previously needed analysts to retrieve
- 𝗡𝗼𝗻-𝗽𝗿𝗼𝗳𝗶𝘁 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺: document retrieval and conversational AI using Azure OpenAI and GPT-3.5 Turbo, built to be reliable under real usage conditions, not just demos
- 𝗟𝗼𝗴𝗶𝘀𝘁𝗶𝗰𝘀 𝗦𝗮𝗮𝗦: used AI-assisted prototyping to replace missing documentation - took client calls, built working screens in Lovable, walked clients through them, got confirmed scope before production code was written. Phase 1 delivered with zero scope drift.
Full-stack delivery across supply chain and logistics, real estate and GIS, operational SaaS, and fintech - including the Eshopbox supply chain platform: 2.7x sales growth, 3.7x profitability, 22% cost reduction, 60 hours per week saved.
GIS platforms handling millions of property records with predictive analytics and IDX integration.
𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧: OpenAI API, Claude API, Azure OpenAI, LangChain, RAG pipelines, AI agents, MCP servers, vector databases
𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸: .NET Core, React, Angular, Node.js, React-Native, Flutter, Python, TypeScript, Next.js, FastAPI
𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲: AWS, PostgreSQL, MongoDB, Docker, REST APIs
I work with founders, CTOs, and product teams who are past the experiment phase. You have software in production, or you are building something that has to work in production. You need someone who can operate inside your existing system, make defensible architectural decisions, and deliver without creating a new set of problems.
I use AI in my own development process - not to replace judgment, but to move faster without cutting corners. That is also how I evaluate AI-assisted code when I am called in to fix it.
𝗜𝗳 𝘆𝗼𝘂 𝗮𝗿𝗲 𝘀𝘁𝗶𝗹𝗹 𝘀𝗰𝗼𝗽𝗶𝗻𝗴, 𝗜 𝗼𝗳𝗳𝗲𝗿 𝗮 𝟯𝟬-𝗺𝗶𝗻𝘂𝘁𝗲 𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝗮 𝗱𝗶𝗿𝗲𝗰𝘁 𝗰𝗼𝗻𝘃𝗲𝗿𝘀𝗮𝘁𝗶𝗼𝗻 𝗮𝗯𝗼𝘂𝘁 𝗳𝗲𝗮𝘀𝗶𝗯𝗶𝗹𝗶𝘁𝘆, 𝗵𝗼𝗻𝗲𝘀𝘁 𝗯𝗹𝗼𝗰𝗸𝗲𝗿𝘀, 𝗮𝗻𝗱 𝗻𝗲𝘅𝘁 𝘀𝘁𝗲𝗽𝘀.
Steps for completing your project
After purchasing the project, send requirements so Keshu can start the project.
Delivery time starts when Keshu receives requirements from you.
Keshu works on your project following the steps below.
Revisions may occur after the delivery date.
Project Requirements
In this step, we'll discuss project requirements, what functionalities you want, and many more. We'll also discuss our timeline and how much time it may need to complete the project.
Development Phase
As per your requirements, I will start coding, implementing API, integrating test cases, etc.