You will get import script to insert/update data by file upload/API
Project details
I can create a script that can import data from a large file or from any 3rd party API. Also, you don't have to worry about data size, server execution time, or memory size.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$200
|
Standard
$300
|
Advanced
$500
|
|---|---|---|---|
| Delivery Time | 5 days | 7 days | 15 days |
Number of Revisions | 1 | 2 | 3 |
Design Customization | - | - | |
Content Upload | |||
Responsive Design | - | ||
Source Code |
40 reviews
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EK
Emir K.
Jan 26, 2026
Next.js + Rest API SEO-Friendly On-Demand ISR Architecture Implementation
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Mark H.
Oct 23, 2025
Ongoing Technical Support for Wordpress
I have worked with Kunal many times and will continue to do so. He is knowledgeable, experienced and organized. highly recommend.
MH
Martin H.
Dec 27, 2023
Node.js/React full stack developer
I worked together with Kunal and can highly recommend him for any technical role in the context of a full-stack developer. As his technical manager and CTO I've been consistently happy with his work. Kunal possesses excellent problem-solving skills, addressing challenges with creativity. His broad technical knowledge has proven invaluable for both front-end and back-end development, and his communication is excellent as well. In addition to his professional attributes, Kunal is very approachable and friendly, contributing positively to our team dynamics. I endorse him as a skilled and versatile developer.
MB
Manik B.
Aug 24, 2022
NestJS + TypeORM Dev Needed For Backend Development To Port An Existing Laravel App
Kunal has been a great resource. Once get understands the tasks at hand, he does the implementation quickly. We want to rehire and work with Kunal in the future as well. Thank you for your work once again.
ML
Michael L.
Jul 13, 2022
Image Upload Portal on Shopify
About Kunal
Senior Next.js & React SaaS Developer | Node.js, TypeScript, APIs
100%
Job Success
Indore, India - 8:46 am local time
With 11+ years of experience and a 100% Job Success score on Upwork, I specialize in developing high-performance applications that are fast, maintainable, and built for long-term scalability.
My expertise includes:
• SaaS application development
• Full-stack JavaScript development
• Next.js & React applications
• Node.js backend systems
• REST APIs & GraphQL APIs
• Authentication & authorization systems
• Stripe integrations & payment workflows
• Shopify custom applications
• Dashboard & admin panel development
• MongoDB & PostgreSQL
• Performance optimization
• Scalable application architecture
I have worked with startups, agencies, and growing businesses to build:
• SaaS products
• eCommerce systems
• Internal business platforms
• Multi-user dashboards
• API integrations
• Custom workflows
• Headless commerce applications
Tech Stack:
Next.js, React, TypeScript, Node.js, Express.js, MongoDB, PostgreSQL, GraphQL, REST APIs, Shopify, Tailwind CSS, AWS, Vercel
Why clients work with me:
• Strong communication
• Clean and maintainable code
• Long-term reliability
• Fast turnaround
• Business-focused development approach
If you need a reliable full-stack engineer who can build scalable and modern applications, feel free to invite me to your project.
Steps for completing your project
After purchasing the project, send requirements so Kunal can start the project.
Delivery time starts when Kunal receives requirements from you.
Kunal works on your project following the steps below.
Revisions may occur after the delivery date.
Initial Discussion
Here we will discuss about your requirements either you want to do file upload or want to integrate an API?